| 1 | University of California, Irvine | 22,172 |
| 2 | Portola Springs | 16,914 |
| 3 | Cypress Village | 16,231 |
| 4 | Anaheim Resort District (south) | 13,233 |
| 5 | University Research Center | 13,102 |
| 6 | Great Park | 11,539 |
| 7 | Baker Ranch | 11,531 |
| 8 | UCI - North Campus | 10,923 |
| 9 | Tustin Legacy (southwest) | 10,706 |
| 10 | Robinson Ranch (northwest) | 10,416 |
| 11 | Eastwood | 9,672 |
| 12 | Colonia Manzanilla (east-northeast 2) | 9,649 |
| 13 | San Juan Capistrano city (southeast) | 9,590 |
| 14 | Santa Ana Gardens (northeast) | 9,466 |
| 15 | Fairlynn (north-northeast) | 9,447 |
| 16 | Almond (north-northeast 1) | 9,324 |
| 17 | Stonegate | 9,038 |
| 18 | French Park (west-southwest) | 8,832 |
| 19 | Ladera Ranch CDP (southeast) | 8,745 |
| 20 | Fairlynn (west-northwest 1) | 8,738 |
| 21 | Heninger Park | 8,726 |
| 22 | McPherson (west-southwest) | 8,592 |
| 23 | West Anaheim (west-southwest) | 8,566 |
| 24 | South Coast (east-southeast) | 8,512 |
| 25 | Colonia Manzanilla (south-southwest) | 8,509 |
| 26 | Aliso Viejo city (south) | 8,494 |
| 27 | Little Arabia (west) | 8,479 |
| 28 | Los Alamitos Junction (north) | 8,467 |
| 29 | Dresden Palms (west-northwest) | 8,433 |
| 30 | Trabuco Highlands (west) | 8,412 |
| 31 | Los Patrones | 8,367 |
| 32 | Almond (south-southwest 1) | 8,291 |
| 33 | San Juan Capistrano city (north-northeast 2) | 8,252 |
| 34 | Almond (northeast) | 8,251 |
| 35 | Dresden Palms (west) | 8,211 |
| 36 | Orange city | 8,170 |
| 37 | Neff (west-southwest) | 8,169 |
| 38 | Cedar Evergreen | 8,168 |
| 39 | Sunny Hills (southwest) | 8,106 |
| 40 | Almond (south-southwest 2) | 8,062 |
| 41 | Santiago Creek (south-southeast) | 8,062 |
| 42 | Lacy | 8,047 |
| 43 | Little Arabia (north 2) | 8,032 |
| 44 | Compass Pointe | 8,012 |
| 45 | Country Hills | 7,984 |
| 46 | Walnut | 7,979 |
| 47 | Mabury Park (south) | 7,921 |
| 48 | Pacific Park | 7,866 |
| 49 | Almond (north-northwest) | 7,835 |
| 50 | Little Saigon (south-southeast 2) | 7,814 |
| 51 | La Bolsa (northwest 1) | 7,746 |
| 52 | Irvine Spectrum | 7,734 |
| 53 | Downtown Fullerton (southwest 2) | 7,732 |
| 54 | Northwood | 7,725 |
| 55 | Tustin Legacy (northeast) | 7,680 |
| 56 | Wintersburg (east-southeast) | 7,679 |
| 57 | Quail Hill | 7,668 |
| 58 | Laguna Altura | 7,642 |
| 59 | Hawks Pointe (south-southwest) | 7,617 |
| 60 | Koreatown (south-southeast 2) | 7,574 |
| 61 | Altair | 7,561 |
| 62 | Santiago Creek (west-northwest) | 7,516 |
| 63 | Atwood | 7,494 |
| 64 | Colonia Manzanilla (southeast 2) | 7,489 |
| 65 | Bingham (west-northwest) | 7,475 |
| 66 | Wilshire Square (east-northeast) | 7,456 |
| 67 | San Rafael | 7,449 |
| 68 | Young Square | 7,425 |
| 69 | Woodbury East | 7,416 |
| 70 | Lyon Street (north) | 7,397 |
| 71 | Little Saigon (west) | 7,364 |
| 72 | French Park (east-northeast) | 7,335 |
| 73 | Ladera Ranch CDP (north) | 7,324 |
| 74 | Dresden Palms (west-southwest 1) | 7,307 |
| 75 | Sunny Hills (east) | 7,277 |
| 76 | Anaheim Hills (south) | 7,240 |
| 77 | West Anaheim (north) | 7,200 |
| 78 | North Tustin (northeast) | 7,170 |
| 79 | South Coast (north-northeast) | 7,168 |
| 80 | Serrano Place | 7,147 |
| 81 | Little Arabia (east-southeast 1) | 7,140 |
| 82 | Frances | 7,097 |
| 83 | Colonia Manzanilla (west 2) | 7,095 |
| 84 | Anaheim Hills (east-southeast) | 7,078 |
| 85 | Santa Ana Gardens (east) | 7,051 |
| 86 | Lower Peters Canyon | 7,040 |
| 87 | Acacia Knolls (north) | 7,013 |
| 88 | Hamer (south) | 6,946 |
| 89 | Colonia Manzanilla (northeast) | 6,923 |
| 90 | Des Moines (west-southwest) | 6,903 |
| 91 | Portola Hills | 6,890 |
| 92 | Thornton Park (west-southwest) | 6,886 |
| 93 | McPherson (north-northwest) | 6,878 |
| 94 | Santa Ana Gardens (west) | 6,876 |
| 95 | Logan | 6,796 |
| 96 | San Mateo | 6,792 |
| 97 | College Park (north-northeast 2) | 6,784 |
| 98 | Almond (west) | 6,773 |
| 99 | Downtown Fullerton (northeast 2) | 6,773 |
| 100 | Mar-Les (northwest) | 6,765 |
| 101 | Dover Shores | 6,759 |
| 102 | Pelican Ridge | 6,756 |
| 103 | San Juan Capistrano city (west-southwest 2) | 6,754 |
| 104 | Anaheim Resort District (south-southwest) | 6,718 |
| 105 | Olinda (northeast) | 6,703 |
| 106 | Casta del Sol (east-southeast) | 6,692 |
| 107 | Lyon Street (southwest) | 6,678 |
| 108 | Turtle Rock Summit | 6,670 |
| 109 | Ladera Ranch CDP (south-southwest) | 6,667 |
| 110 | Dresden Palms (east 4) | 6,662 |
| 111 | Dresden Palms (east 2) | 6,650 |
| 112 | Tustin Ranch (south-southwest) | 6,593 |
| 113 | One Ford Road | 6,588 |
| 114 | Talbert (south-southeast) | 6,579 |
| 115 | Colonia Manzanilla (southeast 1) | 6,568 |
| 116 | West Anaheim (east) | 6,568 |
| 117 | Koreatown (southeast) | 6,559 |
| 118 | Nutwood (west) | 6,554 |
| 119 | Clair (east) | 6,547 |
| 120 | McPherson (south-southwest) | 6,543 |
| 121 | West Anaheim (west-northwest) | 6,521 |
| 122 | Mission Viejo city | 6,509 |
| 123 | Peralta Hills (west-southwest) | 6,498 |
| 124 | Aliso Viejo city (south-southwest) | 6,488 |
| 125 | Anaheim Resort District (north-northwest) | 6,486 |
| 126 | El Niguel Heights (northeast) | 6,479 |
| 127 | Westpark | 6,470 |
| 128 | Little Saigon (north) | 6,449 |
| 129 | Valley Adams (east) | 6,438 |
| 130 | Casta del Sol (west-northwest) | 6,434 |
| 131 | Colonia Manzanilla (northwest) | 6,423 |
| 132 | El Niguel Heights (north-northeast) | 6,421 |
| 133 | Clair (west) | 6,358 |
| 134 | Dresden Palms (east 1) | 6,336 |
| 135 | Irvine Business Complex | 6,326 |
| 136 | Mar-Les (west-northwest) | 6,318 |
| 137 | Coto De Caza (south-southeast) | 6,304 |
| 138 | Sunset Ridge | 6,289 |
| 139 | Almond (southwest 2) | 6,286 |
| 140 | Downtown Fullerton (west 1) | 6,274 |
| 141 | Casta del Sol (east-northeast) | 6,271 |
| 142 | Downtown Fullerton (east-northeast 4) | 6,254 |
| 143 | La Bolsa (west-southwest 1) | 6,248 |
| 144 | South Santa Ana | 6,246 |
| 145 | Santa Ana Heights (northeast) | 6,240 |
| 146 | Downtown Brea (northwest 2) | 6,237 |
| 147 | Lemon Heights | 6,208 |
| 148 | Downtown Fullerton (east-southeast) | 6,183 |
| 149 | Hawks Pointe (northwest) | 6,171 |
| 150 | McPherson (south-southeast) | 6,165 |
| 151 | Aliso Viejo city (east-southeast) | 6,150 |
| 152 | Yorba (northeast) | 6,141 |
| 153 | College Park (south-southwest 2) | 6,134 |
| 154 | Bingham (north-northeast) | 6,133 |
| 155 | Little Arabia (west-southwest 2) | 6,123 |
| 156 | Santiago Creek (southwest) | 6,119 |
| 157 | Koreatown (east-southeast 2) | 6,115 |
| 158 | South Coast (west-southwest) | 6,099 |
| 159 | Casta del Sol (south-southeast 1) | 6,095 |
| 160 | Anaheim Resort District (north-northeast 1) | 6,078 |
| 161 | Little Arabia (south-southeast) | 6,078 |
| 162 | Orchard Hills | 6,065 |
| 163 | Robinson Ranch (east) | 6,065 |
| 164 | San Juan Capistrano city (southwest) | 6,061 |
| 165 | Aliso Viejo city (west) | 6,053 |
| 166 | Bolsa (southwest) | 6,039 |
| 167 | Colonia Manzanilla (west 1) | 6,039 |
| 168 | Monsterrat | 6,029 |
| 169 | Little Arabia (west-southwest 1) | 6,028 |
| 170 | Pico Lowell (east) | 6,027 |
| 171 | Sea Summit (south-southwest) | 6,005 |
| 172 | San Juan Capistrano city (north-northeast 1) | 5,991 |
| 173 | Des Moines (south) | 5,984 |
| 174 | Cornerstone Village (northwest) | 5,979 |
| 175 | College Park (south) | 5,972 |
| 176 | Huntington Harbour (north-northeast) | 5,971 |
| 177 | Neff (southeast) | 5,971 |
| 178 | Colonia Juarez (east) | 5,969 |
| 179 | La Palma city (south-southwest) | 5,955 |
| 180 | Downtown Brea (east-southeast) | 5,954 |
| 181 | Little Saigon (east-southeast) | 5,937 |
| 182 | Edna Park (east-northeast) | 5,921 |
| 183 | La Bolsa (east-northeast 1) | 5,913 |
| 184 | Mar-Les (northeast 2) | 5,910 |
| 185 | Summit Crest | 5,895 |
| 186 | Esperanza (west-southwest) | 5,893 |
| 187 | Newport Shores | 5,888 |
| 188 | Park Place Ranchwood | 5,887 |
| 189 | Fountain Valley Commercial Area (northeast) | 5,879 |
| 190 | McPherson (north-northeast) | 5,879 |
| 191 | Huntington Harbour (east-southeast) | 5,854 |
| 192 | La Bolsa (west-northwest 1) | 5,837 |
| 193 | Colonia Manzanilla (east) | 5,833 |
| 194 | College Park (east-northeast 2) | 5,829 |
| 195 | Anaheim Resort District (south-southeast) | 5,824 |
| 196 | College Park (southeast) | 5,820 |
| 197 | Aliso (south) | 5,805 |
| 198 | Talega (southwest) | 5,784 |
| 199 | Casta del Sol (northeast) | 5,778 |
| 200 | Flora Vista | 5,770 |
| 201 | Dresden Palms (west-southwest 2) | 5,769 |
| 202 | Cowan Heights | 5,761 |
| 203 | Santiago Creek (northwest) | 5,750 |
| 204 | Aliso Viejo city (southeast) | 5,740 |
| 205 | Almond (south-southeast) | 5,734 |
| 206 | Coto De Caza (north) | 5,723 |
| 207 | Buena Park city | 5,720 |
| 208 | College Park (south-southwest 3) | 5,712 |
| 209 | Downtown Fullerton (southeast) | 5,707 |
| 210 | Little Arabia (north-northeast) | 5,700 |
| 211 | The Bluffs | 5,695 |
| 212 | West Anaheim (east-southeast) | 5,695 |
| 213 | Koreatown (east-northeast 2) | 5,692 |
| 214 | Oak Creek | 5,686 |
| 215 | El Niguel Heights (south) | 5,649 |
| 216 | Browning Station | 5,645 |
| 217 | Bingham (east) | 5,641 |
| 218 | Browning (south) | 5,635 |
| 219 | Liberty Park (north) | 5,629 |
| 220 | Niguel Summit (northeast) | 5,629 |
| 221 | Wilshire Square (west-southwest) | 5,628 |
| 222 | West Newport | 5,601 |
| 223 | Little Saigon (east-northeast) | 5,593 |
| 224 | Casta del Sol (north-northwest) | 5,587 |
| 225 | Koreatown (south-southeast 1) | 5,572 |
| 226 | Santa Ana Gardens (west-northwest) | 5,567 |
| 227 | West Anaheim (southwest) | 5,565 |
| 228 | Little Arabia (east-southeast 2) | 5,554 |
| 229 | Browning (north) | 5,552 |
| 230 | Little Saigon (southeast) | 5,540 |
| 231 | Capistrano Beach | 5,533 |
| 232 | Las Flores | 5,531 |
| 233 | Turtle Rock Ridge Garden | 5,531 |
| 234 | Santiago Creek (west 1) | 5,524 |
| 235 | La Bolsa (south) | 5,521 |
| 236 | Anaheim Hills (northwest) | 5,483 |
| 237 | Downtown Fullerton (west 2) | 5,483 |
| 238 | Old Town Placentia (south-southwest) | 5,483 |
| 239 | Boulevard Gardens (east-southeast) | 5,476 |
| 240 | Huntington Harbour (south-southwest) | 5,470 |
| 241 | Olinda (southwest) | 5,466 |
| 242 | Lake Park West | 5,463 |
| 243 | Fairlynn (east-southeast) | 5,461 |
| 244 | Little Arabia (south-southwest) | 5,458 |
| 245 | Edna Park (west-southwest) | 5,451 |
| 246 | Bingham (north-northwest) | 5,449 |
| 247 | Old Town Placentia (east-northeast) | 5,440 |
| 248 | Little Saigon (northwest 2) | 5,437 |
| 249 | Hawks Pointe (southwest) | 5,435 |
| 250 | Thornton Park (east) | 5,429 |
| 251 | Foothill Ranch | 5,424 |
| 252 | Pico Lowell (west) | 5,423 |
| 253 | Madison Park | 5,413 |
| 254 | Mar-Les (east-southeast) | 5,401 |
| 255 | Ridgeview | 5,401 |
| 256 | Acacia Knolls (south-southeast) | 5,400 |
| 257 | Anaheim Hills (east-northeast 1) | 5,385 |
| 258 | Westminster city (southwest) | 5,383 |
| 259 | Colonia Manzanilla (north) | 5,376 |
| 260 | Koreatown (east-southeast 1) | 5,364 |
| 261 | South Cove | 5,363 |
| 262 | Canyon Crest | 5,352 |
| 263 | Aliso Viejo city (north) | 5,351 |
| 264 | Des Moines (west-northwest 2) | 5,338 |
| 265 | Huntington Harbour (north-northwest) | 5,329 |
| 266 | Los Alamitos Junction (south) | 5,328 |
| 267 | Colonia Manzanilla (southwest) | 5,327 |
| 268 | Des Moines (north-northwest) | 5,311 |
| 269 | El Niguel Heights (east-northeast) | 5,299 |
| 270 | Colonia Juarez (south-southwest) | 5,280 |
| 271 | San Angelo | 5,266 |
| 272 | Liberty Park (south) | 5,265 |
| 273 | Bingham (northeast) | 5,260 |
| 274 | Santa Ana Memorial Park | 5,256 |
| 275 | McPherson (east-northeast) | 5,249 |
| 276 | Little Saigon (south-southeast 3) | 5,248 |
| 277 | Downtown Fullerton (east-northeast 3) | 5,241 |
| 278 | Little Saigon (northwest 1) | 5,240 |
| 279 | Huntington Harbour (west-northwest) | 5,227 |
| 280 | Downtown Brea (south-southwest) | 5,220 |
| 281 | Little Saigon (east) | 5,216 |
| 282 | Robinson Ranch (south) | 5,186 |
| 283 | Leisure World (northeast) | 5,157 |
| 284 | Riverglen | 5,142 |
| 285 | Fairbridge Square | 5,137 |
| 286 | Wintersburg (east-northeast) | 5,123 |
| 287 | Casta del Sol (south-southwest) | 5,112 |
| 288 | Cornerstone Village (southeast) | 5,111 |
| 289 | Rossmoor (south) | 5,097 |
| 290 | Mar-Les (southwest) | 5,094 |
| 291 | Los Olivos | 5,093 |
| 292 | Old Town Placentia (west-northwest) | 5,086 |
| 293 | San Rita | 5,079 |
| 294 | Rossmoor (west-southwest) | 5,074 |
| 295 | Bolsa (southeast) | 5,073 |
| 296 | Hewes Park | 5,050 |
| 297 | Northwood Pointe | 5,044 |
| 298 | Colonia Manzanilla (east-northeast 1) | 5,040 |
| 299 | Huntington Beach city | 5,034 |
| 300 | Woodbury Lane | 5,025 |
| 301 | Downtown Fullerton (east) | 5,013 |
| 302 | Nutwood (east) | 5,010 |
| 303 | Chelsea Pointe | 5,009 |
| 304 | Newport Hills | 4,989 |
| 305 | Pinecrest (east) | 4,981 |
| 306 | Los Alamitos Junction (north-northwest) | 4,960 |
| 307 | Des Moines (northeast) | 4,954 |
| 308 | Three Arch Bay | 4,950 |
| 309 | Downtown Fullerton (east-northeast 2) | 4,934 |
| 310 | Parkwood Estates II | 4,930 |
| 311 | Browning (south-southwest) | 4,918 |
| 312 | Downtown Brea (southeast) | 4,918 |
| 313 | Mar-Les (northeast 1) | 4,907 |
| 314 | Bolsa (north) | 4,904 |
| 315 | Fairlynn (west-southwest) | 4,902 |
| 316 | University Park | 4,895 |
| 317 | Casta del Sol (northwest) | 4,884 |
| 318 | North Laguna Hills (northwest) | 4,882 |
| 319 | Neff (north) | 4,881 |
| 320 | Talbert (south-southwest) | 4,848 |
| 321 | Almond (east-southeast) | 4,843 |
| 322 | Koreatown (east 1) | 4,835 |
| 323 | Hawks Pointe (north) | 4,829 |
| 324 | Santiago Creek (north-northwest) | 4,829 |
| 325 | Los Alamitos Junction (southeast) | 4,821 |
| 326 | Santiago Creek (southeast) | 4,819 |
| 327 | Hawks Pointe (east) | 4,816 |
| 328 | Des Moines (east-northeast 1) | 4,815 |
| 329 | Grand Sunrise | 4,813 |
| 330 | Little Saigon (west-northwest) | 4,809 |
| 331 | Concord | 4,802 |
| 332 | Newport Heights | 4,799 |
| 333 | Anaheim Resort District (west 1) | 4,785 |
| 334 | Huntington Harbour (south-southeast) | 4,779 |
| 335 | Wintersburg (south) | 4,775 |
| 336 | Downtown Fullerton (northeast 3) | 4,767 |
| 337 | Santa Ana Triangle (south) | 4,766 |
| 338 | Los Alamitos city (west-northwest) | 4,760 |
| 339 | College Park (south-southwest 1) | 4,736 |
| 340 | Santiago Creek (east) | 4,731 |
| 341 | College Park (west) | 4,727 |
| 342 | Des Moines (northwest) | 4,727 |
| 343 | Almond (south-southwest 3) | 4,713 |
| 344 | Anaheim Resort District (east-northeast) | 4,713 |
| 345 | La Bolsa (west-northwest 2) | 4,713 |
| 346 | Robinson Ranch (southwest) | 4,708 |
| 347 | Neff (north-northwest) | 4,705 |
| 348 | North Laguna Hills (southeast) | 4,688 |
| 349 | Aliso Viejo city (north-northwest 1) | 4,675 |
| 350 | La Palma city (south) | 4,672 |
| 351 | Acacia Knolls (northwest) | 4,671 |
| 352 | College Park (east-northeast 1) | 4,663 |
| 353 | Bingham (south-southeast 2) | 4,662 |
| 354 | Neff (west-northwest) | 4,653 |
| 355 | Kathryn | 4,646 |
| 356 | Santa Ana Gardens (south-southeast) | 4,632 |
| 357 | Wintersburg (north-northwest) | 4,617 |
| 358 | Aliso Viejo city (north-northwest 2) | 4,616 |
| 359 | Woodbury | 4,615 |
| 360 | Koreatown (west 3) | 4,604 |
| 361 | Little Saigon (north-northwest) | 4,602 |
| 362 | Little Arabia (east-northeast) | 4,587 |
| 363 | Anaheim Resort District (west 2) | 4,580 |
| 364 | College Park (north-northeast 1) | 4,580 |
| 365 | Santa Ana Gardens (east-northeast) | 4,557 |
| 366 | Peralta Hills (east) | 4,555 |
| 367 | Los Alamitos Junction (south-southeast) | 4,554 |
| 368 | North Tustin (northwest) | 4,549 |
| 369 | Wintersburg (southwest) | 4,545 |
| 370 | Almond (southwest 1) | 4,535 |
| 371 | Boulevard Gardens (southeast) | 4,525 |
| 372 | Old Town Placentia (north-northwest) | 4,525 |
| 373 | Acacia Knolls (south-southwest) | 4,524 |
| 374 | Niguel Summit (north-northeast) | 4,508 |
| 375 | Koreatown (west-southwest) | 4,506 |
| 376 | Niguel Shores | 4,500 |
| 377 | Sunny Hills (north-northwest) | 4,499 |
| 378 | Downtown Brea (northeast) | 4,498 |
| 379 | Pinecrest (northwest) | 4,494 |
| 380 | Niguel Summit (southwest 2) | 4,478 |
| 381 | Anaheim Hills (east-northeast 2) | 4,449 |
| 382 | Portofino | 4,449 |
| 383 | Anaheim Resort District (northeast) | 4,427 |
| 384 | McPherson (west 1) | 4,425 |
| 385 | Koreatown (east 2) | 4,413 |
| 386 | Koreatown (north-northeast) | 4,413 |
| 387 | Talega (northeast) | 4,407 |
| 388 | Dove Canyon | 4,403 |
| 389 | Sunny Hills (northeast) | 4,398 |
| 390 | Anaheim city | 4,372 |
| 391 | Koreatown (west-northwest 1) | 4,352 |
| 392 | Mallorca (southwest) | 4,346 |
| 393 | Fountain Valley Commercial Area (southwest) | 4,337 |
| 394 | Colonia Manzanilla (south) | 4,334 |
| 395 | West Anaheim (east-northeast) | 4,331 |
| 396 | Laguna Woods city (north-northeast) | 4,324 |
| 397 | La Bolsa (east-northeast 2) | 4,308 |
| 398 | Downtown Fullerton (west-southwest 3) | 4,304 |
| 399 | McPherson (west 2) | 4,303 |
| 400 | Talbert (north) | 4,302 |
| 401 | The Woods | 4,302 |
| 402 | Esperanza (east) | 4,298 |
| 403 | College Park (south-southwest 4) | 4,290 |
| 404 | College Park (southwest) | 4,277 |
| 405 | Corona del Mar Village | 4,275 |
| 406 | Highlands Garden | 4,267 |
| 407 | Wintersburg (northwest) | 4,264 |
| 408 | Leisure World (north 2) | 4,262 |
| 409 | Downtown Fullerton (southwest 1) | 4,258 |
| 410 | Indian Hills | 4,246 |
| 411 | College Park (west-southwest) | 4,242 |
| 412 | Koreatown (northeast 1) | 4,237 |
| 413 | Colonia Manzanilla (west 3) | 4,233 |
| 414 | La Bolsa (south-southwest 2) | 4,228 |
| 415 | Fairlynn (east) | 4,220 |
| 416 | Colonia Manzanilla (north-northeast) | 4,216 |
| 417 | Little Saigon (south-southeast 1) | 4,214 |
| 418 | Rainbow Ridge | 4,214 |
| 419 | Koreatown (northeast 2) | 4,161 |
| 420 | McPherson (east 1) | 4,159 |
| 421 | Hamer (northwest) | 4,151 |
| 422 | La Bolsa (west-southwest 2) | 4,140 |
| 423 | Anaheim Hills (north-northwest) | 4,134 |
| 424 | Almond (north-northeast 2) | 4,120 |
| 425 | Skyview | 4,115 |
| 426 | North Tustin (south) | 4,110 |
| 427 | Sea Summit (north-northeast) | 4,108 |
| 428 | Almond (north) | 4,082 |
| 429 | El Niguel Heights (southwest) | 4,060 |
| 430 | Lyon Street (east-northeast) | 4,026 |
| 431 | Niguel Summit (east) | 4,024 |
| 432 | Mariposa | 4,021 |
| 433 | Colonia Juarez (west-northwest) | 4,014 |
| 434 | Rancho San Joaquin | 4,006 |
| 435 | Anaheim Resort District (north-northeast 2) | 4,000 |
| 436 | Colonia Manzanilla (east-southeast) | 3,992 |
| 437 | Hamer (west-southwest) | 3,989 |
| 438 | La Bolsa (north-northwest) | 3,981 |
| 439 | Sunny Hills (east-southeast) | 3,975 |
| 440 | College Park (east-southeast) | 3,973 |
| 441 | La Bolsa (east-southeast 3) | 3,962 |
| 442 | Top of the World | 3,960 |
| 443 | La Bolsa (northwest 2) | 3,933 |
| 444 | The Groves | 3,929 |
| 445 | Fairlynn (west) | 3,926 |
| 446 | McPherson (northwest) | 3,922 |
| 447 | Santa Ana Heights (south-southwest 1) | 3,921 |
| 448 | Bommer Canyon - Open Space | 3,916 |
| 449 | Sunny Hills (south-southwest) | 3,914 |
| 450 | Pinecrest (south-southwest) | 3,908 |
| 451 | Anaheim Resort District (east) | 3,905 |
| 452 | Aliso Viejo city (east-northeast) | 3,898 |
| 453 | Huntington Harbour (east-northeast) | 3,878 |
| 454 | Santa Ana Heights (south-southwest 2) | 3,869 |
| 455 | University Town Center | 3,869 |
| 456 | La Paloma | 3,850 |
| 457 | Des Moines (east-northeast 2) | 3,840 |
| 458 | Delhi | 3,831 |
| 459 | College Park (northeast) | 3,829 |
| 460 | La Bolsa (southeast) | 3,817 |
| 461 | Downtown Brea (northwest 1) | 3,811 |
| 462 | Thornton Park (northeast) | 3,798 |
| 463 | Saddleback View | 3,793 |
| 464 | Sea Summit (east) | 3,793 |
| 465 | Peralta Hills (east-southeast) | 3,791 |
| 466 | College Park (north-northwest 3) | 3,790 |
| 467 | La Bolsa (northeast) | 3,777 |
| 468 | Boulevard Gardens (west) | 3,775 |
| 469 | Canyon Acres (south-southeast) | 3,764 |
| 470 | Colonia Juarez (east-northeast) | 3,758 |
| 471 | El Camino Real | 3,745 |
| 472 | Browning (west) | 3,713 |
| 473 | Turtle Rock Vista | 3,700 |
| 474 | Los Alamitos city (southeast) | 3,699 |
| 475 | Niguel Summit (southwest 1) | 3,692 |
| 476 | Sunny Hills (west-northwest) | 3,670 |
| 477 | Santa Ana Heights (north-northeast) | 3,669 |
| 478 | Esperanza (west-northwest 2) | 3,662 |
| 479 | Aliso (north) | 3,602 |
| 480 | Los Alamitos Junction (northeast) | 3,596 |
| 481 | La Bolsa (west-southwest 3) | 3,595 |
| 482 | Niguel Summit (south) | 3,587 |
| 483 | El Niguel Heights (north) | 3,576 |
| 484 | Colony Cove | 3,569 |
| 485 | Leisure World (southwest 1) | 3,554 |
| 486 | Bingham (west-southwest) | 3,552 |
| 487 | Dresden Palms (east 3) | 3,546 |
| 488 | Anaheim Hills (west-southwest 2) | 3,542 |
| 489 | Des Moines (east-southeast) | 3,542 |
| 490 | Koreatown (east-northeast 1) | 3,534 |
| 491 | Santa Ana Heights (west-northwest) | 3,518 |
| 492 | South Laguna | 3,518 |
| 493 | Little Arabia (north 1) | 3,483 |
| 494 | Mallorca (north-northwest) | 3,479 |
| 495 | Bay Cliff Village | 3,475 |
| 496 | Des Moines (southeast) | 3,469 |
| 497 | La Palma city (north-northeast) | 3,463 |
| 498 | Ocean View | 3,458 |
| 499 | La Bolsa (south-southeast) | 3,451 |
| 500 | Bonita Canyon | 3,437 |
| 501 | Leisure World (north 1) | 3,433 |
| 502 | Trabuco Highlands (north-northeast) | 3,428 |
| 503 | Turtle Rock Pointe | 3,422 |
| 504 | El Niguel Heights (west-southwest) | 3,407 |
| 505 | Balboa Village | 3,406 |
| 506 | Santa Ana Heights (south-southeast) | 3,389 |
| 507 | El Niguel Heights (southeast) | 3,383 |
| 508 | Dyer | 3,378 |
| 509 | Concordia West | 3,375 |
| 510 | McPherson (east 2) | 3,372 |
| 511 | Mallorca (north-northeast) | 3,367 |
| 512 | Canyon Acres (northwest) | 3,363 |
| 513 | Koreatown (west 2) | 3,363 |
| 514 | Mar-Les (south-southeast) | 3,359 |
| 515 | Downtown Fullerton (west-southwest 2) | 3,352 |
| 516 | Coto De Caza (southwest) | 3,336 |
| 517 | Laguna Woods city (southeast) | 3,328 |
| 518 | Talbert (northeast) | 3,327 |
| 519 | La Bolsa (north-northeast) | 3,320 |
| 520 | Des Moines (west-northwest 1) | 3,309 |
| 521 | Santiago Creek (west 2) | 3,293 |
| 522 | Lyon Street (southeast) | 3,288 |
| 523 | Talbert (northwest) | 3,283 |
| 524 | Browning (north-northeast) | 3,270 |
| 525 | Cerro Villa Heights (north-northeast) | 3,270 |
| 526 | Fairlynn (southeast) | 3,269 |
| 527 | Trabuco Highlands (southeast) | 3,262 |
| 528 | Northwest | 3,254 |
| 529 | Aliso Viejo city (south-southeast) | 3,253 |
| 530 | Canyon Acres (north-northeast) | 3,253 |
| 531 | Leisure World (southwest 3) | 3,247 |
| 532 | Anaheim Hills (west-southwest 1) | 3,224 |
| 533 | McPherson (southeast) | 3,223 |
| 534 | Casta del Sol (southwest) | 3,209 |
| 535 | La Bolsa (east-southeast 2) | 3,209 |
| 536 | Downtown Fullerton (west-southwest 4) | 3,204 |
| 537 | Santa Ana Heights (southwest) | 3,194 |
| 538 | Hamer (east) | 3,186 |
| 539 | Concordia East | 3,184 |
| 540 | Fairlynn (west-northwest 2) | 3,184 |
| 541 | Rossmoor (north-northeast) | 3,150 |
| 542 | Mabury Park (north) | 3,142 |
| 543 | Turtle Rock | 3,141 |
| 544 | Westminster city (northeast) | 3,136 |
| 545 | Los Alamitos city (northwest) | 3,128 |
| 546 | Casta del Sol (north) | 3,120 |
| 547 | Toovunga | 3,118 |
| 548 | Tustin Ranch (north-northeast) | 3,115 |
| 549 | Laguna Woods city (west) | 3,110 |
| 550 | Canyon Acres (south-southwest) | 3,105 |
| 551 | North Tustin (west-southwest) | 3,087 |
| 552 | Esperanza (north-northwest) | 3,084 |
| 553 | Downtown Fullerton (northeast 1) | 3,061 |
| 554 | College Park (north-northwest 2) | 3,028 |
| 555 | Santiago Creek (east-southeast) | 3,022 |
| 556 | Valley Adams (west) | 3,012 |
| 557 | Jasmine Creek | 3,000 |
| 558 | Woodbridge | 2,968 |
| 559 | Boulevard Gardens (north-northwest) | 2,953 |
| 560 | Santiago Creek (north-northeast) | 2,938 |
| 561 | Esperanza (east-northeast) | 2,910 |
| 562 | Hamer (north-northeast) | 2,865 |
| 563 | Cerro Villa Heights (south-southwest) | 2,863 |
| 564 | Downtown Fullerton (west-southwest 1) | 2,824 |
| 565 | Upper Bay | 2,823 |
| 566 | Cypress city | 2,812 |
| 567 | Mallorca (south) | 2,789 |
| 568 | Koreatown (west 1) | 2,761 |
| 569 | Mar-Les (west-southwest) | 2,753 |
| 570 | Colonia Juarez (west) | 2,739 |
| 571 | Esperanza (east-southeast) | 2,729 |
| 572 | College Park (north-northwest 1) | 2,665 |
| 573 | Des Moines (southwest) | 2,663 |
| 574 | Leisure World (southwest 2) | 2,662 |
| 575 | Rancho Mission Viejo | 2,632 |
| 576 | Granville | 2,570 |
| 577 | La Bolsa (north) | 2,570 |
| 578 | San Juan Capistrano city (west-southwest 1) | 2,570 |
| 579 | Anaheim Resort District (west-southwest) | 2,559 |
| 580 | Travata | 2,557 |
| 581 | Sandcastle | 2,529 |
| 582 | Richfields | 2,523 |
| 583 | La Bolsa (east-southeast 1) | 2,463 |
| 584 | Esperanza (west-northwest 1) | 2,454 |
| 585 | Myford | 2,436 |
| 586 | Casta del Sol (south-southeast 2) | 2,408 |
| 587 | La Bolsa (south-southwest 1) | 2,406 |
| 588 | Turtle Rock Crest | 2,405 |
| 589 | Bingham (south-southeast 1) | 2,353 |
| 590 | Balboa Island | 2,285 |
| 591 | Bingham (west) | 2,280 |
| 592 | Acacia Knolls (southeast) | 2,277 |
| 593 | Mallorca (east-southeast) | 2,258 |
| 594 | Koreatown (west-northwest 2) | 2,245 |
| 595 | San Joaquin Marsh | 2,223 |
| 596 | Santa Ana Triangle (north) | 2,181 |
| 597 | Wintersburg (west-northwest) | 2,133 |
| 598 | Downtown Fullerton (north-northwest) | 2,097 |
| 599 | Sea Summit (northwest) | 2,001 |
| 600 | Huntington Harbour (west) | 1,749 |
| 601 | Downtown Fullerton (east-northeast 1) | 1,738 |
| 602 | Lido Isle | 1,699 |
| 603 | North Bluff | 1,661 |
| 604 | Silverado | 1,640 |
| 605 | Quail Hill - Open Space | 1,631 |
| 606 | Harbor Island | 1,539 |
| 607 | Sea Summit (south-southeast) | 1,043 |
| 608 | Trabuco Canyon CDP | 1,010 |
| 609 | Peralta Hills (west-northwest) | 947 |
| 610 | Surfside | 863 |
| 611 | Leisure World (east-southeast) | 649 |
| 612 | Yorba (southwest) | 40 |
| 613 | Neff (east) | 17 |