Ohio

GIS Map covers 52 cities and towns across Ohio, home to roughly 3,965,658 residents combined. The Buckeye State is known for its diverse cities, football, and manufacturing heritage. The most populous community is Columbus, with about 914,802 residents in Franklin County, and it has an interactive street, satellite and topographic map. Cleveland (366,097) and Cincinnati (311,224) follow. The state capital, Columbus, sits in Franklin County.

We publish boundary maps and Census demographics for 88 counties in Ohio. Franklin County is the most populous, with about 1,333,048 residents. The highest median household income belongs to Delaware County at $133,540. By land area, Ashtabula County is the largest at roughly 702 square miles. The youngest population, with a median age of 32.7, is found in Holmes County. Among mapped cities with at least 10,000 residents, Dublin reports the highest median household income at $160,296. All figures come from the U.S. Census Bureau's American Community Survey 2020-2024 five-year estimates.

Ohio's mapped cities sit at a wide range of elevations. Mansfield is the highest at about 1,241 feet above sea level, while Portsmouth is the lowest at about 534 feet. Every mapped city observes Eastern Time. According to the USDA U.S. General Soil Map, Alfisols are the dominant soil order beneath 41 of the mapped city centers. Federal records list 16 government-owned and 152 leased properties in these cities, the most in Columbus. City maps let you switch on FEMA flood zones, USGS contours and land cover layers.

There are 243 ZIP code tabulation areas in Ohio with dedicated pages. The most populated one has about 75,864 residents. The runner-up counts roughly 67,626 people. The densest packs about 14,269 people per square mile. Every page includes drawing and measuring tools plus a click-anywhere inspector that reports the county, ZIP, census tract, school district, flood zone and elevation of any point.