COUNTY · MD
Baltimore County, Maryland
Baltimore County is a county in Maryland with FIPS code 24005 and an estimated population of 844,703 (Census 2023), 3rd largest of 24 in the state.
County facts
- Name
- Baltimore County
- State
- Maryland
- Type
- county
- FIPS code
- 24005
- State FIPS
- 24
- Population (2023)
- 844,703
- Change since 2020
- -1.0%
- State rank
- 3 of 24
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Baltimore County?
Baltimore County, Maryland has the five-digit FIPS code 24005: 24 for the state and 005 for the county.
What state is Baltimore County in?
Baltimore County is in Maryland.
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.