| ZIP Codes: | 24 ZIP Codes (17 Standard, 7 PO Box, 0 Unique) [See All] |
| Area Codes: | 303 / 720 / 983 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:11:31 PM |
| Population: | 478,689 [See All] |
| FIPS: | 08001 |
| CBSA: | Denver-Aurora-Centennial, CO |
| Land Area: | 839 sq mi |
| Water Area: | 8 sq mi |
| Coordinates: | 39.8417, -104.8667 |
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478,689 residents live across 24 ZIPs covering 839 sq mi, served by 12 distinct USPS-recognized cities.
Population moved from 419,901 to 478,689 from 2014 to 2024 — a +14.0% change. 15 ZIPs gained residents, 3 lost.
The county's wealthiest ZIP 80602 (Brighton, $151,737 median) and poorest ZIP 80045 (Aurora, $49,500) are 14.4 miles apart — a 3.1× income gap across local geography.
Median home values vary 3.0× across this county — from $223,200 in 80260 (Denver) to $669,000 in 80137 (Watkins).
Density varies 522× across the county — from 14 people/sq mi in 80137 (Watkins) to 7,247 in 80260 (Denver).
Most of the decade's growth concentrated around Aurora — top growth ZIPs averaged +155.0% over the past ten years ( 80019 , 80045 and 80602 ).
Educational attainment ranges from 15.8% bachelor's+ in 80260 (Denver) to 58.8% in 80045 (Aurora) — the breadth of educational profiles across the area.
Within Colorado, this is the #5 most populous of 65 counties and ranks #13 for median household income with the #11 fastest decade growth .
Weighted by population, the typical household earns about $99,910 across the county — reflecting what a typical resident sees, not a simple ZIP average.
30.4% of adults age 25+ hold a bachelor's degree or higher (96,648 of 318,415 reporting).
17 Standard delivery, 7 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 3.1× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 80022 | Commerce City | Standard | 61,452 | $104,396 | 68.7 | 34.6% |
| 80229 | Denver | Standard | 55,092 | $84,203 | 13.1 | 7.6% |
| 80233 | Denver | Standard | 48,441 | $88,880 | 9.6 | 3.3% |
| 80602 | Brighton | Standard | 44,783 | $151,737 | 31.4 | 54.9% |
| 80601 | Brighton | Standard | 42,127 | $105,417 | 27.0 | 17.8% |
| 80221 | Denver | Standard | 39,718 | $86,810 | 9.6 | -1.5% |
| 80031 | Westminster | Standard | 35,584 | $107,422 | 8.5 | 1.4% |
| 80260 | Denver | Standard | 34,677 | $61,852 | 4.8 | 2.5% |
| 80241 | Thornton | Standard | 34,082 | $110,218 | 6.8 | 2.5% |
| 80234 | Denver | Standard | 29,356 | $92,563 | 7.3 | 11.7% |
| 80030 | Westminster | Standard | 15,427 | $61,092 | 2.8 | -3.9% |
| 80640 | Henderson | Standard | 13,818 | $117,373 | 16.9 | 18.2% |
| 80019 | Aurora | Standard | 7,900 | $129,154 | 24.4 | 236.3% |
| 80102 | Bennett | Standard | 6,690 | $113,125 | 288.5 | 30.3% |
| 80136 | Strasburg | Standard | 6,144 | $111,528 | 197.3 | 21.1% |
| 80137 | Watkins | Standard | 1,689 | $134,890 | 121.6 | 46.5% |
| 80045 | Aurora | Standard | 1,676 | $49,500 | 0.9 | 173.9% |
| 80024 | Dupont | PO Box | 33 | — | 0.0 | -94.6% |
| 80614 | Eastlake | PO Box | — | — | 0.0 | — |
| 80040 | Aurora | PO Box | — | — | 0.0 | — |
| 80042 | Aurora | PO Box | — | — | 0.0 | — |
| 80036 | Westminster | PO Box | — | — | 0.0 | — |
| 80035 | Westminster | PO Box | — | — | 0.0 | — |
| 80037 | Commerce City | PO Box | — | — | 0.0 | — |