|— City —|
|Motto: "One Of The 100 Best Small Towns!"|
|• Mayor||Isaac Niekamp|
|• Total||5.27 sq mi (13.65 km2)|
|• Land||4.98 sq mi (12.90 km2)|
|• Water||0.29 sq mi (0.75 km2)|
|Elevation||876 ft (267 m)|
|• Estimate (2011)||10,406|
|• Density||2,088.4/sq mi (806.3/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|ZIP codes||45822, 45826|
|GNIS feature ID||1048589|
|Website||City of Celina, Ohio|
Celina (pron.: // sə-LY-nə) is a city in and the county seat of Mercer County, Ohio, United States. The population was 10,400 at the 2010 census. Celina is situated on the western shores of Grand Lake St. Marys.
James Watson Riley established Celina in 1834. Celina is the county seat of Mercer County. While traveling through New York state to get the town plat lithographed, Riley came across the town of Salina situated on the edge of Onondaga Lake near Syracuse. Noting the similarity between Salina and the newly founded settlement in Ohio, he named the new town Celina. The spelling was changed to avoid confusion at the post office, or so the story is told from past legends. Another legend has it that the spelling was changed because in Salina, NY, Main Street is oriented east-west (also Market Street is oriented north-south), where in Celina, OH, Main Street is oriented north-south (and Market Steet is oriented east-west).
Celina grew slowly after its founding in 1834. In 1880, only 1,346 people resided in the community, but over the next decade, Celina’s population nearly doubled to 2,684 inhabitants. The primary reason for this population growth was the discovery of oil and natural gas deposits during the 1880s. In 1886, Celina contained three newspaper offices, five churches, and two banks. Numerous manufacturing establishments existed in the community, most of which provided services or products to farmers in the surrounding countryside. This has held true throughout the twentieth century. In 2010, Celina was the largest municipality in Mercer County, with a population of 10,400 people.
Celina is located at  at an elevation of 886 feet (270 m). According to the United States Census Bureau, the city has a total area of 5.27 square miles (13.65 km2), of which, 4.98 square miles (12.90 km2) is land and 0.29 square miles (0.75 km2) is water.(40.551459, -84.570057),
The median income for a household in the city was $42,120, and the median income for a family was $48,965. The per capita income for the city was $20,848. About 12.7% of the population were below the poverty line.
2010 census 
As of the census of 2010, there were 10,400 people, 4,264 households, and 2,791 families residing in the city. The population density was 2,087.9 people per square mile (906.2/km²). There were 4,841 housing units at an average density of 1,017.3 per square mile (392.8/km²). The racial makeup of the city was 94.9% White, 0.5% African American, 0.4% Native American, 1.2% Asian, 0.4% Pacific Islander. Hispanic or Latino of any race were 2.8% of the population.
There were 4,329 households out of which 31.8% had children under the age of 18 living with them, 45.5% were married couples living together, 13.0% had a female householder with no husband present, and 35.5% were non-families. 30.7% of all households were made up of individuals and 27.8% had someone living alone who was 65 years of age or older. The average household size was 2.37 and the average family size was 2.94.
In the city the population was spread out with 27.9% under the age of 19, 24.4% from 20 to 39, 26.2% from 40 to 59, 15.5% from 60 to 79, and 6.1% who were 80 years of age or older. The median age was 38.3 years.
Huffy Bicycle and Mersman Furniture formerly had manufacturing plants in Celina but have since closed. Companies such as Celina Aluminum Precision Technology—a Honda supplier—, Crown Equipment Corporation (located in Huffy's former location), and Reynolds and Reynolds are the largest manufacturing employers.Eighth Floor, LLC, Thieman Tailgates, McKirnan Brothers, Inc. and Celina Tent Inc. are also based out of Celina. There are also lot of farms as a result of the rich soil after the draining. Celina grows mainly soybeans, corn, and potatoes.
Arts and culture 
Celina Lake Festival 
During the last weekend in July, Celina hosts the annual Celina Lake Festival to celebrate Celina's history on Grand Lake St. Marys. The Lake Festival is host to one of the largest Amphicar gatherings in the world. The cars gather on Friday night for a "swim-in".Celina is also home to the Mercer County Fairgrounds. The county fair is held here every year with many arts and crafts,livestock, food, rides, and the hard hitting demolition derby.
Freedom Days Picnic 
Celina hosts the annual Freedom Days Picnic in early July in honor of American Independence.
Public schools 
The schools include East Elementary School (K-4), West Elementary School (K-4), Celina Intermediate Elementary School (5-6), Celina Middle School (7-8), and Celina High School (9-12). There is an alternative high school located at the Education Complex.
The Celina-Mercer County Head Start Program is for children in Pre-School. There are two locations in the Celina district where Head Start is located: The Celina City Schools Education Complex and the Celina City Schools Franklin Building.
There are Tri-Star classes located at the Celina freshman High School, the Celina City Schools Education Complex, and the Franklin Building. Recently,
Colleges and universities 
Celina is served by a daily newspaper,The Daily Standard, first published in 1848. It circulates about 10,000 copies a day.
Celina is also served by three local radio stations, WCSM AM and FM and WKKI FM. WCSM-FM broadcasts at 96.7 and plays adult contemporary music. WCSM-AM broadcasts at 1350 and features news, talk, and the Music of Your Life adult standards format. WKKI broadcasts at 94.3 and plays rock.
- "US Gazetteer files 2010". United States Census Bureau. Retrieved 2013-01-06.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- "American FactFinder". United States Census Bureau. Retrieved 2013-01-06.
- "Population Estimates". United States Census Bureau. Retrieved 2013-01-06.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- http://www.ci.celina.oh.us/discover_history.php City of Celina, Ohio: History
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- U.S. Geological Survey Geographic Names Information System: Celina, Ohio
- "Celina City Schools". Celina City Schools. Retrieved August 4, 2012.