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Butler County, Ohio facts for kids

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Butler County
Butler County Courthouse
Official seal of Butler County
Map of Ohio highlighting Butler County
Location within the U.S. state of Ohio
Map of the United States highlighting Ohio
Ohio's location within the U.S.
Country  United States
State  Ohio
Founded May 1, 1803
Named for General Richard Butler
Seat Hamilton
Largest city Hamilton
 • Total 470 sq mi (1,200 km2)
 • Land 467 sq mi (1,210 km2)
 • Water 3.1 sq mi (8 km2)  0.7%%
 • Total 390,357 Increase
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 8th

Butler County is a county located in the southwestern part of the U.S. state of Ohio. As of the 2020 census, the population was 390,357. 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.


The county was once home to seven large earthworks sites, built by ancient Indigenous peoples of the Americas that lived in the area.

Early French explorers likely passed through the area along the Miami River. The gravesites of David and Margaret Gregory indicate that they were some of the first white settlers in the area in Liberty Township. White settlers began moving into the area in larger numbers after the 1793 Treaty of Greenville was signed with the Native Americans of the area.

Butler County was formed on March 24, 1803 from portions of Hamilton County. It is named for General Richard Butler. Between 1803 and 1823, the townships of the county became officially recognized. Large portions of the county were held by non resident owners, including 640 acres owned by future President William H Harrison. Some land that was originally part of Butler County was later reassigned to Warren County in the north and Hamilton County to the south. The original size of Butler County was 480 sq miles.

The Great Flood of 1913 impacted much of the county, particularly the communities of Middletown, Ohio where approximately 25% of the town was flooded and 6 people died and Hamilton, Ohio, where 46% of the city was flooded, over 300 buildings destroyed and at least 98 people killed.

In the 1920s, Butler, Pickaway and Washington Counties were central areas of the rural membership of the Ku Klux Klan in Ohio.

In 1957 the Ohio Legislature established Hueston Woods State Park which covers 3,596 acres in Butler and neighboring Preble County, Ohio. In addition to a 625-acre man made lake, the park contains the 200 acre Hueston Woods, one of the last near-virgin growths of American beech and maple in Ohio.

Geography and geology

According to the U.S. Census Bureau, the county has a total area of 470 square miles (1,200 km2), of which 467 square miles (1,210 km2) is land and 3.1 square miles (8.0 km2) (0.7%) is water.

The majority of Butler County consists of the river valleys of the Great and Little Miami Rivers. The valley was originally carved by glaciation.

The soil at highest uplands is frequently heavy in clay, moving downhill to a sandy loam, while in the valleys the soil is black with river deposits.

Before deforestation by settlers, much of the area was forests of American beech and maple trees.

Adjacent counties


Historical population
Census Pop.
1810 11,150
1820 21,746 95.0%
1830 27,142 24.8%
1840 28,173 3.8%
1850 30,789 9.3%
1860 35,840 16.4%
1870 39,912 11.4%
1880 42,579 6.7%
1890 48,597 14.1%
1900 56,870 17.0%
1910 70,271 23.6%
1920 87,025 23.8%
1930 114,084 31.1%
1940 120,249 5.4%
1950 147,203 22.4%
1960 199,076 35.2%
1970 226,207 13.6%
1980 258,787 14.4%
1990 291,479 12.6%
2000 332,807 14.2%
2010 368,130 10.6%
2020 390,357 6.0%
U.S. Decennial Census
1790-1960 1900-1990
1990-2000 2020

2010 census

As of the 2010 census, there were 368,130 people, 135,960 households, and 95,404 families residing in the county. The population density was 788.2 inhabitants per square mile (304.3/km2). There were 148,273 housing units at an average density of 317.5 per square mile (122.6/km2). The racial makeup of the county was 86.0% white, 7.3% black or African American, 2.4% Asian, 0.2% American Indian, 0.1% Pacific islander, 1.8% from other races, and 2.1% from two or more races. Those of Hispanic or Latino origin made up 4.0% of the population. In terms of ancestry, 27.0% were German, 14.8% were American, 13.6% were Irish, and 9.7% were English.

Of the 135,960 households, 35.9% had children under the age of 18 living with them, 52.9% were married couples living together, 12.4% had a female householder with no husband present, 29.8% were non-families, and 23.5% of all households were made up of individuals. The average household size was 2.63 and the average family size was 3.10. The median age was 36.0 years.

The median income for a household in the county was $54,788 and the median income for a family was $68,539. Males had a median income of $50,499 versus $37,094 for females. The per capita income for the county was $25,892. About 8.3% of families and 12.8% of the population were below the poverty line, including 16.1% of those under age 18 and 6.8% of those age 65 or over.


Map of Butler County Ohio With Municipal and Township Labels
Map of Butler County, Ohio With Municipal and Township Labels



Census-designated places

Other unincorporated communities


There are thirteen civil townships in Butler County and at least three paper townships:


  • Fairfield
  • Hanover
  • Lemon
  • Liberty
  • Madison
  • Milford
  • Morgan
  • Oxford
  • Reily
  • Ross
  • St. Clair
  • Wayne
  • West Chester (formerly Union Township)


  • Hamilton
  • Heritage (Fairfield)
  • Middletown
  • Sharonville
  • Trenton

Ohio House Districts

  • Ohio House of Representatives, 52nd District


There are sixteen school districts having territory in Butler County.

Primary Boundaries in Butler County

  • Edgewood City School District (also in Preble)
    • Edgewood High School, Trenton (The Cougars)
  • Fairfield City School District
    • Fairfield High School, Fairfield (The Indians)
  • Hamilton City School District
    • Hamilton High School, Hamilton (Big Blue)
  • Lakota Local School District
    • Lakota East High School, Liberty Township (The Thunderhawks)
    • Lakota West High School, West Chester (The Firebirds)
  • Madison Local School District
    • Madison High School, Middletown (The Mohawks)
  • Middletown City School District (also in Warren)
    • Middletown High School, Middletown (The Middies)
  • Monroe Local School District (also in Warren)
    • Monroe High School, Monroe (The Hornets)
  • New Miami Local School District
    • New Miami High School, New Miami (The Vikings)
  • Ross Local School District
    • Ross High School, Hamilton (The Rams)
  • Talawanda City School District (also in Preble)
    • Talawanda High School, Oxford (The Braves)

Partial Boundaries in Butler County

  • Mason City School District, Mason OH (Primarily in Warren County)
  • Northwest Local School District, Cincinnati OH (Primarily in Hamilton County)
  • Preble Shawnee School District, Camden OH (Primarily in Preble County)
  • Princeton City School District, Springdale OH (Primarily in Hamilton County)
  • Southwest Local School District, Harrison OH (Primarily in Hamilton County)
  • Union County–College Corner Joint School District, Liberty IN (Partial in Preble County, Ohio, Primarily in Union and Franklin Counties in Indiana)

Private High Schools

  • Father Stephen T. Badin High School, (Known as Badin High School), Hamilton (The Rams)
  • Cincinnati Christian Schools, Fairfield (The Cougars)
  • Middletown Christian Schools, Middletown (The Eagles) (School complex located in Warren County)

Higher Education

Butler County is home to top ranked and 10th oldest public university, Miami University.


  • Miami University Main Campus, located in Oxford, OH. Founded in 1809.
  • Miami University Middletown, located in Middletown. Founded in 1966, this is Ohio's first regional campus.
  • Miami University Hamilton, located in Hamilton. Founded in 1968.
  • Miami University Voice of America Learning Center, located in West Chester. Founded in 2009, this campus houses the Farmer School of Business MBA program.

Butler County is also home to Butler Tech, a Career Technical Education institution for High School students and Adults. Butler Tech has campuses in West Chester and Fairfield Township.

Notable people

See also

Kids robot.svg In Spanish: Condado de Butler (Ohio) para niños

Black History Month on Kiddle
Famous African-American Architects:
Calvin Brent
Walter T. Bailey
Martha Cassell Thompson
Alberta Jeannette Cassell
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