All Zip Codes in United States
| Zip Codes | Population | State | Rank |
|---|
| 81001 zip code | 30,498 | Colorado | 1 |
| 81005 zip code | 29,975 | Colorado | 2 |
| 81212 zip code | 29,742 | Colorado | 3 |
| 81007 zip code | 29,709 | Colorado | 4 |
| 81504 zip code | 28,481 | Colorado | 5 |
| 81301 zip code | 28,308 | Colorado | 6 |
| 81004 zip code | 25,540 | Colorado | 7 |
| 81501 zip code | 23,465 | Colorado | 8 |
| 81401 zip code | 22,437 | Colorado | 9 |
| 81601 zip code | 15,442 | Colorado | 10 |
| 81521 zip code | 15,397 | Colorado | 11 |
| 81503 zip code | 15,250 | Colorado | 12 |
| 81623 zip code | 15,235 | Colorado | 13 |
| 81507 zip code | 15,081 | Colorado | 14 |
| 81003 zip code | 14,939 | Colorado | 15 |
| 81101 zip code | 14,675 | Colorado | 16 |
| 81321 zip code | 14,459 | Colorado | 17 |
| 81416 zip code | 13,874 | Colorado | 18 |
| 81520 zip code | 13,447 | Colorado | 19 |
| 81650 zip code | 13,006 | Colorado | 20 |
| 81625 zip code | 12,921 | Colorado | 21 |
| 81082 zip code | 12,480 | Colorado | 22 |
| 81006 zip code | 11,513 | Colorado | 23 |
| 81147 zip code | 11,446 | Colorado | 24 |
| 81506 zip code | 10,961 | Colorado | 25 |
| 81403 zip code | 10,534 | Colorado | 26 |
| 81620 zip code | 10,450 | Colorado | 27 |
| 81632 zip code | 10,276 | Colorado | 28 |
| 81611 zip code | 9,921 | Colorado | 29 |
| 81050 zip code | 9,894 | Colorado | 30 |
| 81505 zip code | 9,779 | Colorado | 31 |
| 81008 zip code | 9,641 | Colorado | 32 |
| 81052 zip code | 9,534 | Colorado | 33 |
| 81230 zip code | 9,075 | Colorado | 34 |
| 81226 zip code | 9,066 | Colorado | 35 |
| 81201 zip code | 8,645 | Colorado | 36 |
| 81122 zip code | 8,228 | Colorado | 37 |
| 81631 zip code | 8,215 | Colorado | 38 |
| 81303 zip code | 7,743 | Colorado | 39 |
| 81637 zip code | 7,721 | Colorado | 40 |
| 81211 zip code | 7,623 | Colorado | 41 |
| 81144 zip code | 7,344 | Colorado | 42 |
| 81647 zip code | 7,104 | Colorado | 43 |
| 81635 zip code | 5,957 | Colorado | 44 |
| 81621 zip code | 5,914 | Colorado | 45 |
| 81067 zip code | 5,670 | Colorado | 46 |
| 81657 zip code | 5,581 | Colorado | 47 |
| 81425 zip code | 5,424 | Colorado | 48 |
| 81526 zip code | 5,321 | Colorado | 49 |
| 81413 zip code | 5,243 | Colorado | 50 |
| 81137 zip code | 5,225 | Colorado | 51 |
| 81054 zip code | 5,134 | Colorado | 52 |