Guernsey County
Also known as Guernsey County, Ohio, Guernsey County, OH
county in Ohio, United States
Key facts
- Country
- United States
- State
- Ohio
- Founded
- January 31, 1810
- Named after
- Isle of Guernsey
- Seat
- Cambridge
- Largest city
- Cambridge
- Total
- 528 sq mi (1,370 km )
- Land
- 522 sq mi (1,350 km )
- Water
- 6.0 sq mi (16 km ) 1.1%
- Estimate 2025
- 38,379
- Density
- 73.2/sq mi (28.3/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
~7 min read
Article
Guernsey County is a county located in the east-central portion of the U.S. state of Ohio. As of the 2020 census, the population was 38,438. Its county seat and largest city is Cambridge. It is named from the Isle of Guernsey in the English Channel, from which many of the county's early settlers emigrated.
Guernsey County comprises the Cambridge, OH Micropolitan Statistical Area, which is also included in the Columbus-Marion-Zanesville, OH Combined Statistical Area.