How this list was compiled: Items made on 2026-09-26; names, ids and accepted spellings are Natural Earth's. Licence: public domain (work of the United States government, 17 U.S.C. 105): https://www2.census.gov/geo/pdfs/maps-data/data/tiger/tgrshp2023/TGRSHP2023_TechDoc_Ch1.pdf; public domain (Natural Earth terms of use: https://www.naturalearthdata.com/about/terms-of-use/)
The drawing: Drawn for this site from U.S. Census Bureau 2023 cartographic boundary file cb_2023_us_county_5m (scale 1:5,000,000), https://www2.census.gov/geo/tiger/GENZ2023/shp/cb_2023_us_county_5m.zip, downloaded 2026-09-19. Surrounding land from U.S. Census Bureau 2023 cartographic boundary file cb_2023_us_state_5m (scale 1:5,000,000), https://www2.census.gov/geo/tiger/GENZ2023/shp/cb_2023_us_state_5m.zip, downloaded 2026-09-19 and from Natural Earth 5.1.2, ne_10m_admin_0_countries_lakes (scale 1:10,000,000), https://raw.githubusercontent.com/nvkelso/natural-earth-vector/v5.1.2/geojson/ne_10m_admin_0_countries_lakes.geojson, downloaded 2026-09-19. Albers equal-area conic projection, central meridian 82.7°W, standard parallels 39°N and 41.4°N. Outlines simplified; small islands are left out. Licence: public domain (work of the United States government, 17 U.S.C. 105): https://www2.census.gov/geo/pdfs/maps-data/data/tiger/tgrshp2023/TGRSHP2023_TechDoc_Ch1.pdf; public domain (Natural Earth terms of use: https://www.naturalearthdata.com/about/terms-of-use/)
How it works
This Ohio county quiz asks all 88 counties of Ohio on a blank map: Find it names one to tap, Name it lights one for you to name, and Study shows them all.
Read the full guide
4 areas of Ohio
The areas under Start from split them into Northwest Ohio (21), Northeast Ohio (23), Central and southwest Ohio (25) and Southeast Ohio (19), so a round can be one part of the state at a time.
Typing a name
Under Name it you can type Adams or Adams County: the word County is optional, and accents or capitals do not matter.
Learn the counties around Columbus first, then work out to the borders with Pennsylvania, West Virginia and Kentucky.
Questions and answers
How many counties are in the Ohio county quiz?
All 88 of Ohio, from Adams County to Wyandot County, each asked once per round in a new order.
Where is Franklin County on the map?
Franklin County, around the capital, Columbus, is in the Central and southwest Ohio area; it also has the most people in the state.
Which county names does Ohio share with Indiana?
Thirty-six: Adams, Allen, Brown and Carroll among them are names in both states; here every one is the Ohio county, so a name alone is enough.
Which county is the hardest to tap?
Lake, the smallest shape on the map. Ashtabula is the biggest shape and the easiest.