COUNTY · OH
Summit County, Ohio
Summit County is a county in Ohio with FIPS code 39153 and an estimated population of 535,733 (Census 2023), 4th largest of 88 in the state.
County facts
- Name
- Summit County
- State
- Ohio
- Type
- county
- FIPS code
- 39153
- State FIPS
- 39
- Population (2023)
- 535,733
- Change since 2020
- -0.8%
- State rank
- 4 of 88
Population is the Census Bureau’s Vintage 2023 estimate.
Major cities in Summit County
Other counties in Ohio
Questions
What is the FIPS code for Summit County?
Summit County, Ohio has the five-digit FIPS code 39153: 39 for the state and 153 for the county.
What state is Summit County in?
Summit County is in Ohio.
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.