File:Mercer_County_Courthouse_Celina_Ohio.JPG · Wikimedia Commons · See Wikimedia Commons
Mercer County
Sign in to saveAlso known as Mercer County, Ohio, Mercer County, OH
county in Ohio, United States
Key facts
- Country
- United States
- State
- Ohio
- Founded
- January 2, 1824
- Named after
- Hugh Mercer
- Seat
- Celina
- Largest city
- Celina
- Total
- 473 sq mi (1,230 km )
- Land
- 462 sq mi (1,200 km )
- Water
- 11 sq mi (28 km ) 2.3%
- Estimate 2025
- 42,737
- Density
- 90/sq mi (35/km )
- Time zone
- UTC−5 ( Eastern )
- Summer dst
- UTC−4 ( EDT )
- Congressional district
- 5th
- Website
- www .mercercountyohio .gov
via Wikipedia infobox
Wikidata facts
- Named after
- Hugh Mercer
- Country
- United States
- Located in
- Ohio
- Contains
- Celina
- Capital
- Celina
- Population
- 42528
- Area
- 1226
- Shares border with
- Jay County
- Official website
- www.mercercountyohio.org
- Image
- Mercer County Courthouse Celina Ohio.JPG
- Households
- 16078
- Licence plate code
- 54
Show 8 more facts
- native label
- Mercer County
- Commons category
- Mercer County, Ohio
- topic's main category
- Category:Mercer County, Ohio
- inception
- 1824-01-02
- category of associated people
- Category:People from Mercer County, Ohio
- different from
- Mercer County
- water as percent of area
- 2.3
- per capita income
- 30975
Sources (10)
via Wikidata · CC0
~11 min read
Encyclopedic overview
Grand Lake St. Marys State Park Graftonoceras fossil nautiloid, found near Coldwater, southern Mercer County.
Mercer County is located in the U.S. state of Ohio. As of the 2020 census, the population was 42,528. Its county seat is Celina. The county was created in 1820 and later organized in 1824. It is named for Hugh Mercer, an officer in the American Revolutionary War.
Excerpted from Wikipedia’s “Mercer County” article, available under the CC BY-SA 4.0 licence.