First three digits · Colorado
ZIP Codes Starting with
63 ZIP codes start with 804, sorted at the Denver, CO (SCF 800) sectional center (USPS labeling list L005, effective October 1, 2026) in Colorado: 57 residential ZIP codes across 11 counties and 6 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 804 mean?
The first digit, 8, is one of ten national areas (Arizona, Colorado, Idaho, New Mexico, Nevada, Utah and Wyoming). The first three, 804, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 804 to the Denver, CO (SCF 800) facility. The last two digits pick the delivery area. By residents, the largest town names among the 804 ZIP codes are Golden, Evergreen, Steamboat Springs, Morrison, Breckenridge and Silverthorne.
The same facility sorts 8 prefixes, 332 ZIP codes in all: 800, 801, 802, 803, 804, 805, 806, 807.
Where are the 804 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 804
| County | ||||||
|---|---|---|---|---|---|---|
| 80401 | Golden | Jefferson County | 43,811 | 893 | $118k | $805k |
| 80402 | Golden | Jefferson County | PO Box or unique | – | – | – |
| 80403 | Golden | Jefferson County | 20,732 | 146 | $151k | $838k |
| 80419 | Golden | Jefferson County | no residents | 0 | – | – |
| 80420 | Alma | Park County | 1,246 | 30 | $87k | $616k |
| 80421 | Bailey | Park County | 8,536 | 82 | $99k | $579k |
| 80422 | Black Hawk | Gilpin County | 4,363 | 41 | $96k | $589k |
| 80423 | Bond | Eagle County | 83 | 0 | – | $536k |
| 80424 | Breckenridge | Summit County | 9,764 | 78 | $121k | $1.03M |
| 80425 | Buffalo Creek | Jefferson County | 243 | 5 | $82k | $672k |
| 80426 | Burns | Eagle County | 102 | 1 | $96k | $465k |
| 80427 | Central City | Gilpin County | 567 | 39 | $62k | $364k |
| 80428 | Clark | Routt County | 720 | 4 | $120k | $830k |
| 80429 | Climax | Lake County | PO Box or unique | – | – | – |
| 80430 | Coalmont | Jackson County | 148 | 1 | $64k | $347k |
| 80432 | Como | Park County | 293 | 1 | $45k | $403k |
| 80433 | Conifer | Jefferson County | 8,292 | 125 | $134k | $773k |
| 80434 | Cowdrey | Jackson County | 32 | 0 | – | – |
| 80435 | Dillon | Summit County | 8,715 | 84 | $98k | $942k |
| 80436 | Dumont | Clear Creek County | 348 | 20 | $59k | $376k |
| 80437 | Evergreen | Jefferson County | PO Box or unique | – | – | – |
| 80438 | Empire | Clear Creek County | 970 | 17 | $67k | $356k |
| 80439 | Evergreen | Clear Creek County | 24,610 | 146 | $156k | $900k |
| 80440 | Fairplay | Park County | 3,502 | 11 | $116k | $469k |
| 80442 | Fraser | Grand County | 2,614 | 47 | $108k | $773k |
| 80443 | Frisco | Summit County | 3,992 | 39 | $109k | $909k |
| 80444 | Georgetown | Clear Creek County | 1,053 | 28 | $79k | $522k |
| 80446 | Granby | Grand County | 4,017 | 11 | $75k | $643k |
| 80447 | Grand Lake | Grand County | 1,857 | 9 | $96k | $632k |
| 80448 | Grant | Park County | no residents | 0 | – | – |
| 80449 | Hartsel | Park County | 916 | 2 | $60k | $397k |
| 80451 | Hot Sulphur Springs | Grand County | 1,265 | 34 | $112k | $421k |
| 80452 | Idaho Springs | Clear Creek County | 3,135 | 24 | $76k | $449k |
| 80453 | Idledale | Jefferson County | 297 | 564 | – | $452k |
| 80454 | Indian Hills | Jefferson County | 986 | 196 | $179k | $789k |
| 80455 | Jamestown | Boulder County | 501 | 16 | $169k | $622k |
| 80456 | Jefferson | Park County | 507 | 2 | – | $628k |
| 80457 | Kittredge | Jefferson County | 283 | 460 | $235k | $464k |
| 80459 | Kremmling | Grand County | 2,569 | 4 | $88k | $391k |
| 80461 | Leadville | Lake County | 6,957 | 29 | $96k | $458k |
| 80463 | McCoy | Routt County | 100 | 1 | $193k | $1.07M |
| 80465 | Morrison | Jefferson County | 16,582 | 382 | $132k | $685k |
| 80466 | Nederland | Boulder County | 3,599 | 31 | $101k | $732k |
| 80467 | Oak Creek | Routt County | 2,260 | 8 | $102k | $664k |
| 80468 | Parshall | Grand County | 382 | 1 | – | $630k |
| 80469 | Phippsburg | Routt County | 402 | 11 | $87k | $546k |
| 80470 | Pine | Jefferson County | 3,608 | 35 | $136k | $681k |
| 80471 | Pinecliffe | Boulder County | no residents | 0 | – | – |
| 80473 | Rand | Jackson County | 62 | 2 | $31k | – |
| 80474 | Rollinsville | Gilpin County | 264 | 32 | – | – |
| 80475 | Shawnee | Park County | 39 | 1 | – | – |
| 80476 | Silver Plume | Clear Creek County | 159 | 3 | $52k | $556k |
| 80477 | Steamboat Springs | Routt County | PO Box or unique | – | – | – |
| 80478 | Tabernash | Grand County | 1,396 | 38 | $106k | $1.01M |
| 80479 | Toponas | Routt County | 32 | 0 | – | – |
| 80480 | Walden | Jackson County | 1,130 | 1 | $49k | $231k |
| 80481 | Ward | Boulder County | 484 | 11 | $117k | $711k |
| 80482 | Winter Park | Grand County | 1,447 | 10 | $65k | $775k |
| 80483 | Yampa | Routt County | 455 | 5 | $85k | $430k |
| 80487 | Steamboat Springs | Routt County | 18,525 | 23 | $110k | $1.06M |
| 80488 | Steamboat Springs | Routt County | PO Box or unique | – | – | – |
| 80497 | Silverthorne | Summit County | PO Box or unique | – | – | – |
| 80498 | Silverthorne | Summit County | 8,881 | 30 | $106k | $824k |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.