Thornton, CO Public Records
Thornton is an incorporated city in Adams County, Colorado, with an estimated population of 146,689 (U.S. Census Bureau, July 2024 estimate) and 36.5 square miles of land. That is up about 4,824 residents since the 2020 Census base.
🏢 Thornton City Hall
Thornton's own city government keeps its local records: council or board meeting minutes, local ordinances and resolutions, local permits and licenses, and its own budget and contracts. Requests for those records go to the city clerk under the Colorado Open Records Act (CORA). Birth and death certificates, marriage records, deeds and court files are generally kept by county and state offices rather than by the city; see the offices below.
📇 Thornton Contact on File
| Government | City Of Thornton |
| Contact listed | Policy Planning Manager |
| Mailing address | 9500 Civic Center Dr, Thornton, CO 80229 |
| Phone | Not stated |
| Official website | www.cityofthornton.net |
| Source | U.S. Census Bureau, 2022 Census of Governments: Government Units listing ↗ |
This is the mailing address the government reported to the U.S. Census Bureau; it may be a post office box or the office of an elected official rather than a public counter, and the source does not list a phone number. The website was reported by the government and was answering when we last checked. Call or check the official website before you visit.
↑ Back to record types🏛️ County Courthouse & Records Office for Thornton
Thornton is in Adams County (with parts in Weld County). In Colorado, deeds, mortgages and other land records are recorded by the County Clerk and Recorder. Divorce cases in Colorado are heard by the District Court in each county. Wills and estates in Colorado are handled by the District Court in each county (the Denver Probate Court in Denver).
📍 Adams County at a Glance
| County | Adams County |
| County population (2024 est.) | 542,973 Source: www2.census.gov ↗ |
| Also partly in | Weld County |
⚖️ Adams County District Court – Clerk of Court (Adams County Justice Center)
| Address | 1100 Judicial Center Dr., Brighton, CO 80601 |
| Directions | Get directions ↗ |
| Phone | (303) 659-1161 |
| Hours | Monday-Friday: 7:30 a.m. - 5:00 p.m. |
| Records available | Colorado District Court and County Court case records for the county (civil, criminal, domestic relations, probate, juvenile, small claims) |
| Official website | coloradojudicial.gov |
| Sources | coloradojudicial.gov/…/adams-county ↗ coloradojudicial.gov/…/clerks-court ↗ |
| Last verified | October 17, 2026 |
See the full Adams County records page →
↑ Back to record types📋 Where to Get Records for Thornton
Where to get the most-requested public records for people and property in Thornton, CO:
📋 Thornton Records Guide
| Birth & death certificates | Colorado Department of Public Health and Environment – Vital RecordsCertified birth and death certificates for Colorado are issued by the state vital records office; in some places a county or local office can also issue copies. |
| Deeds & property records | In Colorado, deeds, mortgages and other land records are recorded by the County Clerk and Recorder. |
| Court cases & divorce | Adams County courthouse. Divorce cases in Colorado are heard by the District Court in each county. |
| Wills & estates | Wills and estates in Colorado are handled by the District Court in each county (the Denver Probate Court in Denver). |
| State court system | Colorado Judicial Branch |
| Sex offender registry | Colorado Sex Offender Registry (Colorado Bureau of Investigation) |