COUNTY · MD
Harford County, Maryland
Harford County is a county in Maryland with FIPS code 24025 and an estimated population of 264,644 (Census 2023), 8th largest of 24 in the state.
County facts
- Name
- Harford County
- State
- Maryland
- Type
- county
- FIPS code
- 24025
- State FIPS
- 24
- Population (2023)
- 264,644
- Change since 2020
- +1.3%
- State rank
- 8 of 24
Population is the Census Bureau’s Vintage 2023 estimate.
Questions
What is the FIPS code for Harford County?
Harford County, Maryland has the five-digit FIPS code 24025: 24 for the state and 025 for the county.
What state is Harford County in?
Harford 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.