| 1 | Commerce City city (south-southwest 2) | 13,063 |
| 2 | Todd Creek CDP (southeast) | 9,878 |
| 3 | Derby CDP (east-northeast 2) | 9,433 |
| 4 | Todd Creek CDP (southwest) | 9,164 |
| 5 | Thornton city (southeast) | 8,351 |
| 6 | Northglenn city (east-northeast) | 7,904 |
| 7 | Thornton city (west-northwest) | 7,569 |
| 8 | Derby CDP (south-southwest 2) | 7,393 |
| 9 | Northglenn city (south-southeast) | 7,343 |
| 10 | Federal Heights city (east-southeast) | 7,317 |
| 11 | Commerce City city (north-northwest) | 7,224 |
| 12 | Thornton city (north-northwest) | 7,114 |
| 13 | Bennett town (west 2) | 7,106 |
| 14 | Federal Heights city (south-southeast) | 7,022 |
| 15 | Northglenn city (north-northwest 1) | 6,878 |
| 16 | North Washington CDP (northeast) | 6,753 |
| 17 | Thornton city (south-southwest) | 6,421 |
| 18 | Thornton city (north-northeast 2) | 6,418 |
| 19 | Thornton city (west-southwest) | 6,349 |
| 20 | Brighton city (west-southwest) | 6,236 |
| 21 | Derby CDP (north-northeast) | 6,226 |
| 22 | Bennett town (west-southwest 2) | 6,219 |
| 23 | Aurora city (west-northwest) | 6,173 |
| 24 | Thornton city (north-northeast 1) | 6,116 |
| 25 | Commerce City city (north-northeast 1) | 6,089 |
| 26 | Westminster city (northeast) | 6,075 |
| 27 | Sherrelwood CDP (west) | 5,985 |
| 28 | Shaw Heights CDP (west-southwest) | 5,914 |
| 29 | Westminster city (west) | 5,863 |
| 30 | Northglenn city (north-northwest 2) | 5,818 |
| 31 | Bennett town (west 3) | 5,816 |
| 32 | Aurora city (east-northeast) | 5,701 |
| 33 | Commerce City city (east-southeast) | 5,634 |
| 34 | Bennett town (east-northeast) | 5,620 |
| 35 | Derby CDP (southwest 1) | 5,548 |
| 36 | Welby CDP (east-southeast) | 5,533 |
| 37 | Federal Heights city (east-northeast) | 5,513 |
| 38 | Berkley CDP (east) | 5,484 |
| 39 | Thornton city (south-southeast 1) | 5,484 |
| 40 | Derby CDP (southwest 2) | 5,402 |
| 41 | Bennett town (east) | 5,353 |
| 42 | Shaw Heights CDP (north-northwest) | 5,345 |
| 43 | Todd Creek CDP (east-northeast) | 5,190 |
| 44 | Northglenn city (southwest) | 5,109 |
| 45 | Federal Heights city (north-northeast) | 5,047 |
| 46 | North Washington CDP (north-northeast) | 5,007 |
| 47 | North Washington CDP (west-northwest) | 4,989 |
| 48 | Westminster city (north-northwest) | 4,954 |
| 49 | Derby CDP (south-southwest 1) | 4,929 |
| 50 | Commerce City city (south-southwest 1) | 4,924 |
| 51 | Brighton city (northeast) | 4,890 |
| 52 | Commerce City city (west) | 4,882 |
| 53 | Bennett town (west-southwest 3) | 4,874 |
| 54 | Commerce City city (north-northeast 2) | 4,807 |
| 55 | Westminster city (east 2) | 4,781 |
| 56 | Derby CDP (north 1) | 4,750 |
| 57 | Northglenn city (south) | 4,625 |
| 58 | Thornton city (west) | 4,587 |
| 59 | Derby CDP (west-northwest) | 4,561 |
| 60 | Todd Creek CDP (west-northwest) | 4,538 |
| 61 | Shaw Heights CDP (northwest) | 4,530 |
| 62 | Federal Heights city (west) | 4,527 |
| 63 | Twin Lakes CDP (north) | 4,489 |
| 64 | Bennett town (west-southwest 1) | 4,449 |
| 65 | Federal Heights city (north-northwest) | 4,441 |
| 66 | Thornton city (east-southeast 2) | 4,434 |
| 67 | North Washington CDP (north) | 4,414 |
| 68 | Berkley CDP (northwest) | 4,387 |
| 69 | Derby CDP (east-northeast 1) | 4,368 |
| 70 | Welby CDP (west-northwest) | 4,344 |
| 71 | Shaw Heights CDP (east-southeast) | 4,323 |
| 72 | Derby CDP (west-southwest) | 4,311 |
| 73 | Shaw Heights CDP (south-southwest) | 4,277 |
| 74 | Thornton city (south-southeast 2) | 4,228 |
| 75 | Todd Creek CDP (northwest) | 4,190 |
| 76 | Aurora city (west-southwest) | 4,145 |
| 77 | Brighton city (southeast) | 4,098 |
| 78 | Aurora city (east-southeast) | 4,092 |
| 79 | Sherrelwood CDP (northeast) | 3,963 |
| 80 | Berkley CDP (south-southwest) | 3,832 |
| 81 | Sherrelwood CDP (east) | 3,649 |
| 82 | Thornton city (east) | 3,606 |
| 83 | Northglenn city (northwest) | 3,593 |
| 84 | Thornton city (east-southeast 1) | 3,422 |
| 85 | Twin Lakes CDP (south) | 3,386 |
| 86 | Westminster city (southwest) | 3,267 |
| 87 | Berkley CDP (north) | 3,155 |
| 88 | Berkley CDP (south-southeast) | 3,043 |
| 89 | Westminster city (south-southwest) | 2,987 |
| 90 | Thornton city (northwest) | 2,908 |
| 91 | Westminster city (east 1) | 2,902 |
| 92 | Shaw Heights CDP (east-northeast) | 2,872 |
| 93 | Berkley CDP (west) | 2,862 |
| 94 | Berkley CDP (north-northeast) | 2,861 |
| 95 | Thornton city (east-southeast 3) | 2,713 |
| 96 | North Washington CDP (south) | 2,660 |
| 97 | North Washington CDP (south-southwest) | 2,624 |
| 98 | Northglenn city (east-southeast) | 2,583 |
| 99 | Federal Heights city (south-southwest) | 2,579 |
| 100 | Todd Creek CDP (northeast) | 2,191 |
| 101 | Brighton city (north-northwest) | 1,986 |
| 102 | Derby CDP (north 2) | 1,733 |
| 103 | Bennett town (west 1) | 1,615 |
| 104 | Todd Creek CDP (south) | 1,586 |
| 105 | Commerce City city (north) | 1,280 |
| 106 | Derby CDP (northeast) | 1,212 |