Hamilton County, Ohio

Hamilton County
U.S. county
Seal
Location within the U.S. state of Ohio
Ohio's location within the U.S.
Coordinates:
Country	United States
State	Ohio
Founded	January 2, 1790
Seat	Cincinnati
Largest city	Cincinnati
Area
• Total	413 sq mi (1,070 km2)
• Land	406 sq mi (1,050 km2)
• Water	6.4 sq mi (17 km2)
Population  (2020)
• Total	830,639
• Density	2,046/sq mi (790/km2)
Website	www.hamilton-co.org

Hamilton County is a county located in the southwestern corner of the U.S. state of Ohio. As of the 2020 census, the population was 830,639, making it the third-most populous county in Ohio. The county seat is Cincinnati, the third-largest city in Ohio. The county is named for Alexander Hamilton, the first Secretary of the Treasury.

History

Hamilton County was established on January 2, 1790, as the second county in the Northwest Territory. It was named after Alexander Hamilton, who was serving as the first Secretary of the Treasury at the time. The county originally extended north to Lake Erie, but its size was reduced as new counties were created.

Geography

According to the United States Census Bureau, the county has a total area of 413 square miles (1,070 km²), of which 406 square miles (1,050 km²) is land and 6.4 square miles (17 km²) (1.6%) is water. The county is located at the southwestern corner of Ohio, bordered by the Ohio River to the south and the state of Indiana to the west.

Adjacent counties

• Butler County, Ohio (north)
• Warren County, Ohio (northeast)
• Clermont County, Ohio (east)
• Boone County, Kentucky (southwest)
• Kenton County, Kentucky (south)
• Campbell County, Kentucky (southeast)
• Dearborn County, Indiana (west)

Demographics

As of the 2020 census, there were 830,639 people, 333,945 households, and 202,084 families residing in the county. The population density was 2,046 people per square mile (790/km²). The racial makeup of the county was 68.8% White, 25.7% African American, 0.2% Native American, 2.4% Asian, and 2.9% from two or more races. Hispanic or Latino of any race were 3.5% of the population.

Government

Hamilton County is governed by a three-member Board of County Commissioners. The county also has several other elected officials, including the Sheriff, Prosecutor, Clerk of Courts, Recorder, Treasurer, and Engineer.

Economy

Hamilton County has a diverse economy with major sectors including manufacturing, healthcare, finance, and education. The county is home to several Fortune 500 companies, including Procter & Gamble, Kroger, and Fifth Third Bank.

Education

Hamilton County is served by numerous public school districts, private schools, and higher education institutions. The largest public school district is Cincinnati Public Schools. Higher education institutions include the University of Cincinnati and Xavier University.

Transportation

Hamilton County is served by several major highways, including Interstate 71, Interstate 75, and Interstate 275. The county also has a public transportation system operated by the Southwest Ohio Regional Transit Authority (SORTA), which includes bus services and the Cincinnati Bell Connector streetcar.

Communities

Cities

• Cincinnati
• Norwood
• Reading

Villages

• Addyston
• Amberley
• Arlington Heights
• Cheviot
• Cleves
• Elmwood Place
• Fairfax
• Glendale
• Golf Manor
• Greenhills
• Lincoln Heights
• Lockland
• Madeira
• Mariemont
• Newtown
• North Bend
• Silverton
• Terrace Park
• Woodlawn

Townships

• Anderson Township
• Colerain Township
• Columbia Township
• Crosby Township
• Delhi Township
• Green Township
• Harrison Township
• Miami Township
• Springfield Township
• Sycamore Township
• Symmes Township
• Whitewater Township

See also

• List of counties in Ohio
• National Register of Historic Places listings in Hamilton County, Ohio

Also see

► Healthcare providers in Ohio

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