COUNTY · CO
Weld County, Colorado
Weld County is a county in Colorado with FIPS code 08123 and an estimated population of 359,442 (Census 2023), 8th largest of 64 in the state.
County facts
- Name
- Weld County
- State
- Colorado
- Type
- county
- FIPS code
- 08123
- State FIPS
- 08
- Population (2023)
- 359,442
- Change since 2020
- +8.4%
- State rank
- 8 of 64
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Weld County?
Weld County, Colorado has the five-digit FIPS code 08123: 08 for the state and 123 for the county.
What state is Weld County in?
Weld County is in Colorado.
How do I know if an address is in this county?
Use the address lookup. ZIP codes and city names can cross county lines, so an address is the reliable check.
Sources: U.S. Census Bureau geographic reference files; Census Bureau Population Estimates, Vintage 2023. Last reviewed 2026-10-27.