Location within the U.S. state of Ohio
Ohio's location within the U.S.
|Founded||January 2, 1790|
|Named for||Alexander Hamilton|
|• Total||413 sq mi (1,070 km2)|
|• Land||406 sq mi (1,050 km2)|
|• Water||6.7 sq mi (17 km2) 1.6%%|
| • Estimate |
|• Density||1,987/sq mi (767/km2)|
|Time zone||UTC−5 (Eastern)|
|• Summer (DST)||UTC−4 (EDT)|
|Congressional districts||1st, 2nd|
Hamilton County is located in the southwestern corner of the U.S. state of Ohio. As of the 2010 census, the population was 802,374,making it the third-most populous county in Ohio. The county seat and largest city is Cincinnati. The county is named for the first Secretary of the Treasury, Alexander Hamilton. Hamilton County is part of the Cincinnati-Middletown, OH-KY-IN Metropolitan Statistical Area.
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The southern portion of Hamilton County was originally owned and surveyed by John Cleves Symmes, and the region was a part of the Symmes Purchase. The first settlers rafted down the Ohio River in 1788 following the American Revolutionary War. They established the towns of Losantiville (later Cincinnati), North Bend, and Columbia.
Hamilton County was organized in 1790 by order of Arthur St. Clair, governor of the Northwest Territory, as the second county in the Northwest Territory. Cincinnati was named as the seat. Residents named the county in honor of Alexander Hamilton, who was the first Secretary of the Treasury of the United States and a founder of the Federalist Party. Its original boundaries were those defined for the Symmes purchase contract in 1788:the Ohio River in the South, Great Miami River to the west, the Lesser Miami River to the east, and the Cayuhoga River to the North. Its area then included about one-eighth of Ohio, and had about 2,000 inhabitants (not including the remaining Native Americans). The county was greatly expanded in 1792 to include what is today the lower peninsula of Michigan. Since 1796, other counties were created from Hamilton, reducing the county to its present size.
The county was the location of much of the Northwest Indian War both before and after its organization.
The United States forcibly removed most of the Shawnee and other Indian peoples to move to locations west of the Mississippi River in the 1820s. Rapid growth occurred during the 1830s and 1840s as the area attracted many German and Irish immigrants, especially after the Great Famine in Ireland and the revolutions in Germany in 1848.
During the Civil War, Morgan's Raid (a Confederate cavalry campaign from Kentucky) passed through the northern part of the county during the summer of 1863.
According to the U.S. 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 6.7 square miles (17 km2) (1.6%) is water.
The county lies in a region of gentle hills formed by the slopes of the Ohio River valley and its tributaries. The Great Miami River, the Little Miami River, and the Mill Creek also contribute to this system of hillsides and valleys. No naturally occurring lakes exist, but three major manmade lakes are part of the Great Parks of Hamilton County.The largest lake by far is Winton Woods Lake, covering 188 surface acres, followed by Miami Whitewater Lake, covering 85 surface acres, and Sharon Lake, covering 36 surface acres.
The county boundaries include the lowest point in Ohio, in Miami Township, where the Ohio River flows out of Ohio and into Indiana. This is the upper pool elevation behind the Markland Dam, 455 feet (139 m) above sea level.
The highest land elevation in Hamilton County is the Rumpke Sanitary Landfill at 1,045 feet (319 m) above sea level in Colerain Township.
|U.S. Decennial Census |
As of the 2000 census, there were 845,303 people, 346,790 households, and 212,582 families living in the county. The population density was 2,075 people per square mile (801/km2). There were 373,393 housing units at an average density of 917 per square mile (354/km2). The racial makeup of the county was 69.2% White, 26.0% Black or African American, 0.1% Native American, 2.3% Asian, 0.01% Pacific Islander, 0.51% from other races, and 2.2% from two or more races. 2.8% of the population were Hispanic or Latino of any race.
There were 346,790 households, out of which 30.20% had children under the age of 18 living with them, 43.40% were married couples living together, 14.30% had a female householder with no husband present, and 38.70% were non-families. 32.90% of all households were made up of individuals, and 10.60% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 3.07.
In the county, the population was spread out, with 25.80% under the age of 18, 9.60% from 18 to 24, 29.70% from 25 to 44, 21.50% from 45 to 64, and 13.50% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 91.10 males. For every 100 females age 18 and over, there were 86.80 males.
The median income for a household in the county was $40,964, and the median income for a family was $53,449. Males had a median income of $39,842 versus $28,550 for females. The per capita income for the county was $24,053. About 8.80% of families and 11.80% of the population were below the poverty line, including 16.20% of those under age 18 and 8.70% of those age 65 or over.
As of the 2010 United States Census, there were 802,374 people, 333,945 households, and 197,571 families living in the county. The population density was 1,976.7 inhabitants per square mile (763.2/km2). There were 377,364 housing units at an average density of 929.7 per square mile (359.0/km2). The racial makeup of the county was 68.8% white, 25.7% black or African American, 2.0% Asian, 0.2% American Indian, 0.1% Pacific islander, 1.1% from other races, and 2.1% from two or more races. Those of Hispanic or Latino origin made up 2.6% of the population. In terms of ancestry, 31.0% were German, 14.7% were Irish, 7.7% were English, and 6.6% were American.
Of the 333,945 households, 29.7% had children under the age of 18 living with them, 39.4% were married couples living together, 15.4% had a female householder with no husband present, 40.8% were non-families, and 33.9% of all households were made up of individuals. The average household size was 2.34 and the average family size was 3.04. The median age was 37.1 years.
The median income for a household in the county was $48,234 and the median income for a family was $64,683. Males had a median income of $48,344 versus $37,310 for females. The per capita income for the county was $28,799. About 11.1% of families and 15.4% of the population were below the poverty line, including 22.9% of those under age 18 and 9.0% of those age 65 or over.
The county's highest population was recorded in the 1970 U.S. Census. Since then, the county has lost population at an average rate of three percent per decade. Although Hamilton County is experiencing a decline in birth rates and has higher death rates in older age groups (cohorts), out-migration of residents is the key factor in population loss. In the last decade, this population loss has been reversed, and it is estimated that both Hamilton County and the City of Cincinnati have grown their populations.The Cincinnati Metropolitan Statistical Area, over the last three decades has seen a 19 percent increase in population. Much of the region's growth has been through movement of Cincinnati and Hamilton County residents into neighboring counties.
As of 2020, the members of the Hamilton Board of County Commissioners are Denise Driehaus, Stephanie Summerow Dumas, and Alicia Reece.
Since 1963, the Board has employed an administrator to run the day-to-day operations of the county; the current administrator is Jeffrey Aluotto.Other elected officers include Dusty Rhodes (Auditor), Joe Deters (Prosecutor), Charmaine McGuffey (Sheriff), Eric Beck (Engineer), Scott Crowley (Recorder), Robert Goering (Treasurer), and Lakshmi Sammarco (Coroner).
As of 2021, the elected Common Pleas Court include: Judge Jody Luebbers, Judge Lisa Allen, Judge Jennifer Branch, Judge Wende Cross, Judge Leslie Ghiz, Judge Robert Goering, Judge Tom Heekin, Judge Christian Jenkins, Judge Charles Kubicki, Judge Melba Marsh, Judge Terry Nestor, Judge Robert Ruehlman, Judge Nicole Sanders, Judge Megan Shanahan, Judge Alan Triggs, and Judge Christopher Wagner.
Hamilton County historically elected Republican candidates in national elections, but has trended Democratic in recent years. In 2008, Barack Obama was the first Democratic presidential candidate to win the county since 1964. The county continued to lean Democratic, voting for Obama again in 2012 and for Democratic candidate Hillary Clinton in 2016. In fact, it was one of the few counties in Ohio to swing toward the Democrats in 2016 even as the state as a whole had swung toward the Republicans. In the 2018 midterm elections, with the election of Democrat Stephanie Summerow Dumas, the Hamilton County Board of Commissioners was entirely Democratic for the first time ever.Democrats had previously regained majority control of the Board of Commissioners in 2016 with the election of Denise Driehaus. In 2019, longtime Democratic Commissioner Todd Portune announced his resignation from the Board due to health problems. Portune's Chief of Staff, Victoria Parks, was appointed to serve the remainder of his term (through the November 2020 general election). With Parks' appointment, the Board of Commissioners became for the first time all-female and majority Black. In the November 2020 election, Democrat Alicia Reece was elected to fill Parks' seat, thereby retaining the Board's status as all-female and majority Black.
Historically, due to its tight races and its position in the swing state of Ohio, Hamilton County was regarded as a crucial county to win in presidential elections. In 2012, The Washington Post named Hamilton as one of the seven most important counties in the country for that year's election.Time characterized Hamilton County's political scene as "a battle between conservative suburbs and a Democratic urban center, though Cincinnati is one of the most conservative metro areas in the Midwest." These characterizations have become less true in recent years. While many of Cincinnati's western suburbs, like Green and Delhi Townships, continue to strongly support Republican candidates, the city itself and most of its northern suburbs vote strongly Democratic.
Public elementary and secondary education is provided by 22 school districts:
In 2016, Cincinnati Public Schools had 35,000 students, 63% of which were African-American.The county also has a vocational school district, the Great Oaks Institute of Technology and Career Development. Parochial schools of various denominations add to this base. Among these the Roman Catholic Archdiocese of Cincinnati maintains a system of 108 elementary and 22 secondary schools, the ninth largest private system in the United States.
Interstate 71, Interstate 74, Interstate 75, Interstate 471 and Interstate 275 serve the county. The Norwood Lateral and Ronald Reagan Cross County Highway are also prominent east–west thoroughfares in the county.
CSX Transportation, Norfolk Southern, RailAmerica, and Amtrak.
The county, in cooperation with the City of Cincinnati, operates the Public Library of Cincinnati and Hamilton County system with a main library and 41 branches. Major sports teams are listed under the communities in which they are located, primarily Cincinnati. The Great Parks of Hamilton County district resides within Hamilton County and maintains a series of preserves and educational facilities. Three of the largest parks within the system are Miami Whitewater Forest, Winton Woods, and Sharon Woods. The Hamilton County Fair is the oldest county fair in Ohio.
Fairfield is a suburban city located in both Butler and Hamilton counties in the U.S. state of Ohio. Fairfield is located approximately 25 miles north of Cincinnati and is situated on the east bank of the Great Miami River. The population was 42,510 at the 2010 census. Incorporated in 1955 from portions of Fairfield Township, it includes the former hamlets of Symmes Corner, Fair Play, Furmandale, and Stockton. The Fairfield City School District is one of the largest in Ohio and serves both the City of Fairfield and Fairfield Township.
Miami County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 102,506. Its county seat is Troy. The county is named in honor of the Miami people.
Licking County is a county located in the central portion of the U.S. state of Ohio. As of the 2010 census, the population was 166,492. Its county seat is Newark. The county was formed on January 30, 1808, from portions of Fairfield County.
Greene County is located in the southwestern portion of the U.S. state of Ohio. As of the 2010 census, the population was 161,573. Its county seat is Xenia. The county was established on March 24, 1803 and named for General Nathanael Greene, an officer in the Revolutionary War.
Butler County is a county located in the southwestern part of the U.S. state of Ohio. As of the 2010 census, the population was 368,130. Its county seat is Hamilton. It is named for General Richard Butler, who died in 1791 during St. Clair's Defeat. Located along the Great Miami River, it is also home to Miami University, a public university founded in 1809. Butler County is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area. The majority of the county is in District 52 of the State House.
Clermont County, popularly called Clermont, is a county in the U.S. state of Ohio. As of the 2010 census, the population was 197,363. Ordinanced in 1800 as part of the Virginia Military District, Clermont is Ohio's eighth oldest county, the furthest county west in Appalachian Ohio, the eleventh oldest county of the former Northwest Territory. Clermont County is part of the Cincinnati, OH-KY-IN Metropolitan Statistical Area. The county is named for the Clermont Province of France, the home of Vercingetorix, from the French "clear hills or mountain." Its county seat is Batavia.
Cleves is a village in Miami Township, Hamilton County, Ohio, United States, located along the Ohio River. The population was 3,234 at the 2010 census. Founded in 1818, it is named for John Cleves Symmes who lived here, laid out the original town site, and sold lots.
Deer Park is a city in Hamilton County, Ohio, United States. It is a suburb of Cincinnati. The population was 5,736 at the 2010 census.
Grandview is a census-designated place (CDP) in Hamilton County, Ohio, United States. The population was 1,466 at the 2010 census.
Montgomery is a city in Hamilton County, Ohio, United States, settled in 1796. The town was a coach stop on the Cincinnati-Zanesville Road, later known as the Montgomery Pike, with an inn, two taverns, a grist mill and a carding mill to process its agricultural products. It would remain a rather sleepy hamlet until the 1960s when it became an affluent bedroom community for people working in Cincinnati. It retains its historic downtown with many other 19th-century houses scattered throughout the community. It is currently accessed from exit 15 off Interstate 71 and exit 50 off Interstate 275, and it is the eastern terminus of the Ronald Reagan Cross County Highway about five miles northeast of the Cincinnati city line. The population was 10,251 at the 2010 census.
Mount Healthy is a city in Hamilton County, Ohio, United States, in the Cincinnati/Northern Kentucky metropolitan area. The population was 6,098 at the 2010 census.
North College Hill is a city in Hamilton County in the southwestern part of the U.S. state of Ohio approximately ten miles north of downtown Cincinnati. As of the 2010 census, the city population was 9,397. The city takes its name from its proximity to the Cincinnati neighborhood of College Hill which borders it to the south.
St. Bernard is a village in Hamilton County, Ohio, United States. The population was 4,368 at the 2010 census.
The Village of Indian Hill is a city in Hamilton County, Ohio, United States, and an affluent suburb of the Greater Cincinnati area. The population was 5,785 at the 2010 census. Prior to 1970, Indian Hill was incorporated as a village, but under Ohio law became designated as a city once its population was verified as exceeding 5,000. The municipality then changed its name to add "Village" into the official name; legally it is "The City of The Village of Indian Hill". The Village of Indian Hill is served by the Indian Hill Exempted Village School District. It has previously been named as the "Best Place to Raise a Family" by the magazine Robb Report.
Sharonville is a city largely in Hamilton county in the U.S. state of Ohio. The population was 13,560 at the 2010 census. Of this, 11,197 lived in Hamilton County and 2,363 lived in the southeast corner of West Chester Township in Butler County.
Loveland is a city in Hamilton, Clermont, and Warren counties in the southwestern part of the U.S. state of Ohio. Considered part of the Greater Cincinnati area, Loveland is located near exit 52 off Interstate 275, about 15 miles (24 km) northeast of the Cincinnati city limits. It borders Symmes, Miami and Hamilton Townships and straddles the Little Miami River. The population was 12,081 at the 2010 census and was estimated at 13,145 in 2019. Once a busy railroad town, Loveland is now a major stop along the Little Miami Scenic Trail.
Springboro is a city in the U.S. state of Ohio. A suburb of Cincinnati and Dayton, it is located mostly in Warren County in Clearcreek and Franklin Townships; with a small portion in Miami Township in Montgomery County. The city is part of the Miami Valley. As of the 2010 census, the city had a population of 17,409.
Anderson Township is a township located southeastern Hamilton County along the Ohio and Little Miami Rivers, approximately 13 miles southeast of downtown Cincinnati. The 2010 census found 43,446 people in the township, making it one of the most populous townships in the state of Ohio.
Green Township is one of the twelve townships of Hamilton County, Ohio, United States. The 2010 census found 58,370 people in the township. It was founded in 1809.
Deerfield Township, one of the eleven townships of Warren County, Ohio, United States, is located in the southwest corner of the county and is part of the Cincinnati, Ohio MSA. The population, according to the latest American Community Survey is 38,217, making it the most populous jurisdiction in Warren County, Ohio.
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