The Butler County Ohio

Butler County is a county in 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 passed away in 1791 during St. Clair’s Defeat.  Located along the Miami River, it is home to Miami University, an Ohio public university that was founded in 1809 as the 2nd university in the State of Ohio.

Butler County belongs to the Cincinnati, OH-KY-IN Metropolitan Statistical Area. The majority of the county is in District 52 of the State House.

Butler County Data

Coordinates: 39°26′N 84°35′W
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%%



 • Estimate

 • Density 788/sq mi (304/km2)
Time zone UTC−5 (Eastern)
 • Summer (DST) UTC−4 (EDT)
Congressional district 8th


Succeeding cultures of ancient Indigenous peoples of the Americas inhabited areas of the county. They constructed big earthworks, seven of which were still standing and recorded by a Smithsonian survey.

Early French explorers likely passed through the area along the Miami River. The gravesites of David and Margaret Gregory suggest they were some of the very first white inhabitants in the area in Liberty Township. White settlers started 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 parts of Hamilton County. Some land that was originally part of Butler County was reassigned to Warren County in the north and Hamilton County to the south. Butler County’s original size was 480 sq miles.

The Great Flood of 1913 affected much of the county, especially the communities of Middletown, Ohio where roughly 25% of the town was flooded and 6 people passed away and Hamilton, Ohio, where 46% of the city was flooded, over 300 buildings destroyed, and at least 98 individuals killed.
In the 1920s, Butler, Pickaway and Washington counties were main areas of the rural subscription 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 surrounding Preble County. In addition to a 625-acre manmade lake, the park includes the 200-acre Hueston Woods, one of the last near-virgin developments of American beech and maple in Ohio.

Middletown, Ohio is the topic of J.D. Vance’s book “Hillbilly Elegy,” (2017 ), which chronicles the author’s childhood and the societal concerns of southwestern Ohio. Butler County government employment.


2000 census

As of the census  of 2000, there were 332,807 people, 123,082 homes, and 87,880 households living in the county. The population density was 712 people per square mile (275/km ²). There were 129,793 housing units at a typical density of 278 per square mile (107/km ²). The racial makeup of the county was 91.20% White, 5.27% Black or African American, 0.21% Native American, 1.55% Asian, 0.03% Pacific Islander, 0.62% from other races, and 1.13% from two or more races. 1.43% of the population were Hispanic or Latino of any race. 28.1% were of German, 16.7% American, 10.7% Irish, and 9.8% English ancestry according to Census 2000. Those citing “American” origins in Butler County are of overwhelmingly English extraction, however most English Americans identify simply as having American ancestry due to the fact that their roots have actually remained in North America for so long, in some cases since the 1600s.

There were 123,082 homes out of which 35.50% had children under the age of 18 living with them, 57.00% were wed couples living together, 10.70% had a female homeowner with no hubby present, and 28.60% were non-families. 22.70% of all families were made up of individuals and 7.60% had somebody living alone who was 65 years of age or older. The average family size was 2.61 and the typical family size was 3.07.

In the county, the population was spread out with 25.90% under the age of 18, 11.90% from 18 to 24, 29.80% from 25 to 44, 21.70% from 45 to 64, and 10.70% who were 65 years of age or older. The average age was 34 years. For every 100 females there were 95.30 males. For every 100 females age 18 and over, there were 92.20 males.

The average income for a family in the county was $47,885, and the average earnings for a family was $57,513. About 5.40% of households and 8.70% of the population were below the poverty line, consisting of 9.10% of those under age 18 and 7.00% of those age 65 or over.

2010 census

As of the 2010 census, there were 368,130 people, 135,960 families, and 95,404 households residing in the county.  The population density was 788.2 inhabitants per square mile (304.3/ km2). There were 148,273 housing systems at a typical 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 comprised 4.0% of the population.  In regards to ancestry, 27.0% were German, 14.8% were American, 13.6% were Irish, and 9.7% were English.

Of the 135,960 families, 35.9% had kids under the age of 18 living with them, 52.9% were wed couples living together, 12.4% had a female householder with no other half present, 29.8% were non-families, and 23.5% of all households were made up of people. The mean age was 36.0 years.

The average earnings for a home in the county was $54,788 and the average income for a family was $68,539. The per capita earnings for the county was $25,892. About 8.3% of households and 12.8% of the population were listed below the poverty line, consisting of 16.1% of those under age 18 and 6.8% of those age 65 or over.


Prior to 1952, Butler County was strongly Democratic in presidential elections, only backing two Republican candidates for president from 1856 to 1948. Starting with the 1952 election, it has ended up being a Republican Party fortress, with the sole Democrat to win the county in a presidential election ever since being Lyndon B. Johnson in 1964 in the midst of his statewide & nationwide landslide victory. Butler County animal control.

Butler County,  OH Zip Codes

45003 | 45011 | 45013 | 45014 | 45015 | 45030 | 45042 | 45044 | 45050 | 45053 | 45056 | 45064 | 45067 | 45069 | 45241 | 45246 | 45327

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