City profile · Mid-size City
Thornton, Colorado
Verified Oct 19, 2026Who leads Thornton, with the evidence behind the record.
City leadership
- Leader
- Jan Kulmann
- Role
- Mayor (Ceremonial)
- Form of government
- Mayor
- Party
- Nonpartisan
- Population
- 145,103
- Census Bureau estimate
- Last verified
- Oct 19, 2026
- Matched the official page in an automated check
- Last checked
- Oct 19, 2026
- The check matched the published record
Source & verification
- Verification sourcethorntonco.gov/government/mayor-council ↗
- Official leadership pagethorntonco.gov/government/mayor-council ↗
- City websitethorntonco.gov ↗
“Last checked” is when we last looked at the source. “Last verified” is when the record was last confirmed. A page we couldn't read never counts as a verification.
Record history
Published records only. Possible changes still under review are not shown here.
Leaders on record
- Jan Kulmann CurrentMayor (Ceremonial) · added May 4, 2026 · verified Oct 19, 2026
Reviewed changes
No reviewer-published changes yet.
Demographics
Census Bureau data for the city
- Population
- 145,103
- Median household income
- $95,064
- Median age
- 33.7
- Land area
- 36.52 sq mi
- Population density
- 3,973.2 per sq mi
- County
- Adams County
- Metro area
- Denver-Aurora-Centennial, CO
City government
Budget and contact
- Annual budget
- ~$508M
- City hall phone
- (303) 866-2316
- Official website
- thorntonco.gov ↗
Use this record in your app
The same leadership and verification fields are available from the API.
curl https://api.civicgrid.org/cities/222 \
-H "Authorization: Bearer cg_live_..."