Thornton city, Colorado
Official LSAD Designation: Thornton city • Census GEOID: 0877290
• Adams County / Weld County
Thornton city is an incorporated city in Adams County, Weld County, Colorado. According to official records from the Census (2025), Thornton city had an estimated population of 147,766 residents. Official Census Bureau geographic records classify this community under LSAD designation Thornton city (GEOID 0877290).
Local Government Administration U.S. Census Bureau GMAF
City Of Thornton
Municipal
Official Title:
Policy Planning Manager
Address:
9500 CIVIC CENTER DR, THORNTON CO 80229-4326
County Of Adams
County
Official Title:
Senior Accountant
Address:
4430 SOUTH ADAMS COUNTY PARKWAY, SUITE C4000A, BRIGHTON CO 80601
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 147,766 | 2025 |
| Median Household Income | $103,088 | 2020-2024 |
| Median Home Value | $517,500 | 2020-2024 |
| Land Area | 36.68 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).