Key facts
- Country
- United States
- State
- Ohio
- Founded
- February 3, 1845
- Named after
- the Wyandot people
- Seat
- Upper Sandusky
- Largest city
- Upper Sandusky
- Total
- 408 sq mi (1,060 km )
- Land
- 407 sq mi (1,050 km )
- Water
- 0.7 sq mi (1.8 km ) 0.2%
- Estimate 2025
- 21,567
- Density
- 54/sq mi (21/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
Article
Wyandot County is a county located in the northwestern part of the U.S. state of Ohio. As of the 2020 census, the population was 21,900. Its county seat is Upper Sandusky. It was named for the Wyandot People, who lived there before and after European expansion. Their autonym is variously translated from their language as "around the plains" and "dwellers on the peninsula". The county was organized by the state legislature from parts of Crawford, Marion, Hardin and Hancock counties on February 3, 1845.
History