INDEPENDENT CITY · MO
St. Louis city, Missouri
St. Louis city is an independent city in Missouri with FIPS code 29510 and an estimated population of 281,754 (Census 2023), 5th largest of 115 in the state.
County facts
- Name
- St. Louis city
- State
- Missouri
- Type
- independent city
- FIPS code
- 29510
- State FIPS
- 29
- Population (2023)
- 281,754
- Change since 2020
- -6.2%
- State rank
- 5 of 115
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in St. Louis city
Other counties in Missouri
Questions
What is the FIPS code for St. Louis city?
St. Louis city, Missouri has the five-digit FIPS code 29510: 29 for the state and 510 for the county.
What state is St. Louis city in?
St. Louis city is in Missouri.
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.