| ZIP Codes: | 39 ZIP Codes (29 Standard, 7 PO Box, 3 Unique) [See All] |
| Area Codes: | 303 / 720 / 970 / 983 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:11:35 PM |
| Population: | 2,915 [See All] |
| FIPS: | 08123 |
| CBSA: | Greeley, CO |
| Land Area: | 3,950 sq mi |
| Water Area: | 27 sq mi |
| Coordinates: | 41.2415, -103.7989 |
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373,554 residents live across 39 ZIPs covering 3,950 sq mi, served by 33 distinct USPS-recognized cities.
Population moved from 288,332 to 373,512 from 2014 to 2024 — a +29.5% change. 23 ZIPs gained residents, 9 lost.
The county's wealthiest ZIP 80542 (Mead, $133,500 median) and poorest ZIP 80631 (Greeley, $54,591) are 24.2 miles apart — a 2.4× income gap across local geography.
Median home values vary 1.9× across this county — from $321,900 in 80623 (Gilcrest) to $620,000 in 80642 (Hudson).
Density varies 240× across the county — from 13 people/sq mi in 80644 (Kersey) to 3,168 in 80620 (Evans).
Educational attainment ranges from 15.6% bachelor's+ in 80643 (Keenesburg) to 53.4% in 80550 (Windsor) — the breadth of educational profiles across the area.
Within Colorado, this is the #61 most populous of 107 counties and ranks #101 for median household income .
Hosts 3 single-entity Unique ZIPs: 80639Univ Of Northern Colorado ; 80551Eastman Kodak Co ; and 80638State Farm Ins .
Weighted by population, the typical household earns about $96,808 across the county — reflecting what a typical resident sees, not a simple ZIP average.
33.5% of adults age 25+ hold a bachelor's degree or higher (83,146 of 247,927 reporting).
29 Standard delivery, 7 PO Box only, 3 single-entity Unique ZIPs serve this county.
3 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
Weld County lost 13.0% of residents between 2014 and 2024. ZIPs that shed the largest share:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 80634 | Greeley | Standard | 65,622 | $82,742 | 36.9 | 18.3% |
| 80504 | Longmont | Standard | 63,451 | $113,643 | 101.1 | 31.0% |
| 80631 | Greeley | Standard | 53,722 | $54,591 | 102.8 | 6.5% |
| 80550 | Windsor | Standard | 46,456 | $126,132 | 56.9 | 107.3% |
| 80620 | Evans | Standard | 20,798 | $73,590 | 6.6 | 17.9% |
| 80534 | Johnstown | Standard | 20,502 | $129,024 | 48.7 | 56.9% |
| 80603 | Brighton | Standard | 16,811 | $118,297 | 81.1 | 46.2% |
| 80621 | Fort Lupton | Standard | 15,060 | $90,055 | 128.8 | 26.3% |
| 80543 | Milliken | Standard | 9,774 | $104,574 | 32.8 | 60.4% |
| 80615 | Eaton | Standard | 9,060 | $107,308 | 110.4 | 17.8% |
| 80514 | Dacono | Standard | 6,721 | $104,494 | 9.3 | 47.6% |
| 80530 | Frederick | Standard | 6,242 | $124,000 | 3.1 | 72.3% |
| 80542 | Mead | Standard | 5,155 | $133,500 | 9.4 | 39.1% |
| 80643 | Keenesburg | Standard | 5,119 | $97,766 | 217.1 | 53.7% |
| 80645 | La Salle | Standard | 4,917 | $87,609 | 96.2 | 7.7% |
| 80651 | Platteville | Standard | 4,837 | $81,586 | 92.5 | 17.7% |
| 80642 | Hudson | Standard | 4,466 | $105,225 | 98.3 | -11.6% |
| 80610 | Ault | Standard | 4,132 | $92,153 | 164.2 | 51.2% |
| 80650 | Pierce | Standard | 2,192 | $57,083 | 73.6 | 43.1% |
| 80644 | Kersey | Standard | 2,124 | $97,847 | 160.9 | -31.6% |
| 80520 | Firestone | PO Box | 1,140 | $63,529 | 0.6 | -22.7% |
| 80623 | Gilcrest | PO Box | 1,026 | — | 0.9 | 5.1% |
| 80648 | Nunn | Standard | 902 | $94,079 | 238.2 | -12.6% |
| 80624 | Gill | Standard | 685 | $80,673 | 73.8 | -44.0% |
| 80611 | Briggsdale | Standard | 557 | $78,529 | 398.9 | -11.0% |
| 80612 | Carr | Standard | 494 | — | 197.4 | 15.4% |
| 80729 | Grover | Standard | 350 | $48,750 | 607.7 | -33.6% |
| 80652 | Roggen | Standard | 299 | $72,639 | 164.2 | 26.2% |
| 80622 | Galeton | Standard | 282 | $138,710 | 15.7 | 18.5% |
| 80546 | Severance | PO Box | 271 | $113,242 | 0.1 | 146.4% |
| 80742 | New Raymer | Standard | 204 | $82,500 | 469.2 | -26.4% |
| 80754 | Stoneham | Standard | 141 | $82,500 | 149.1 | -26.9% |
| 80732 | Hereford | PO Box | 42 | $17,679 | 2.9 | — |
| 80646 | Lucerne | PO Box | 0 | — | 0.8 | — |
| 80551 | Windsor | Unique | — | — | 0.0 | — |
| 80639 | Greeley | Unique | — | — | 0.0 | — |
| 80638 | Greeley | Unique | — | — | 0.0 | — |
| 80633 | Greeley | PO Box | — | — | 0.0 | — |
| 80632 | Greeley | PO Box | — | — | 0.0 | — |