Clark County, Ohio
Clark County: county in Ohio, United States
About
Clark County is a county located in the U.S. state of Ohio. As of the 2010 census, the population was 138,333 and a population density of 132 people per km². After 10 years in 2020 county had an estimated population of 133,593 inhabitants. Its county seat is Springfield. The county was created 208 years ago in 1818.
County Snapshot
Clark County at a glance
Clark County currently has 17 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.
Mapped populated places
17
These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.
Ohio counties
88
Open related pagesLargest city
SpringfieldPopulation 58,456
Top linked places
Quick Facts about Clark County
| Population | 133,593 (2020) |
| Country | United States of America |
| State | Ohio (United States) |
| Different from | Clark County, Clark County, Clark County, Clark County, Clark County, Clark County, Clark County, Clark County, Clark County, Clark County, Clark County |
| Plate code | 12 |
| Area | 1045 km2 |
| Water as percent of area | 1.3% |
| Land as percent of area | 98.7% |
| Latitude & Longitude | 39.9168,-83.7839 |
| Named for | George Rogers Clark |
| Capital | Springfield |
| Establishment | March 01, 1818 |
| Time Zone | America/New_York |
| Local time | 19:42:20 (18th April 2026) |
| Density | 128 Pop. per km² as of 2020 |
| Population growth | -3.55% (2010-2020) |
| Weather | 75℉ Showers And Thunderstorms 7-days weather |
Geography
Clark County is located at 39°55'0"N 83°47'2"W (39.9167800, -83.7839000). It has 5 neighbors: Greene County, Madison County, Montgomery County, Champaign County and Miami County.
Clark County map
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The largest city of Clark County is Springfield with a population of 58,456. Other cities include, New Carlisle population 5,559, Harmony population 2,649, Lisbon population 2,626 and Enon population 2,381. See all Clark County cities & populated places.
Clark County Populated Places (more)
Cities, towns, neighborhoods & other populated places in Clark County.
| City Name | Population | Title |
|---|---|---|
| Springfield | 58,456 | The most populous city in Clark County, Ohio. |
| New Carlisle | 5,559 | City in Ohio, US |
| Park Layne | 4,343 | Census-designated place in Clark County, Ohio |
| Mad River | 2,750 | Township of Ohio |
| Harmony | 2,649 | Human settlement in United States of America |
| Lisbon | 2,626 | Village in Ohio, USA |
| Enon | 2,381 | Human settlement in Clark County, Ohio, United States of America |
| Green Meadows | 2,327 | Census-designated place in Clark County, Ohio |
| South Charleston | 1,609 | Village in Clark County, Ohio, United States |
| Holiday Valley | 1,510 | Census-designated place in Clark County, Ohio |
| Crystal Lakes | 1,483 | City in Ray County, Missouri, United States |
| Brighton | 902 | Human settlement in United States of America |
| North Hampton | 463 | Human settlement in Clark County, Ohio, United States of America |
| South Vienna | 397 | Human settlement in Clark County, Ohio, United States of America |
| Tremont City | 357 | Human settlement in Clark County, Ohio, United States of America |
| Catawba | 275 | Human settlement in Clark County, Ohio, United States of America |
Weather
Showers and thunderstorms. Mostly cloudy, with a high near 75. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an i...
7-Day ForecastOfficial website of Clark County
Official Website- Springfield
Demographics
According to census records, the population of Clark County decreased by 3.55% in 10 years.
| Year | Population | % Change | Method |
|---|---|---|---|
| 2010 | 138,333 | - | census |
| 2011 | 137,811 | -0.38% | estimation process |
| 2012 | 137,171 | -0.47% | estimation process |
| 2013 | 136,638 | -0.39% | estimation process |
| 2014 | 136,311 | -0.24% | estimation process |
| 2015 | 135,746 | -0.42% | estimation process |
| 2016 | 134,723 | -0.76% | estimation process |
| 2017 | 134,549 | -0.13% | estimation process |
| 2018 | 134,528 | -0.02% | estimation process |
| 2019 | 134,083 | -0.33% | estimation process |
| 2020 | 133,593 | -0.37% | estimation process |
People born in Clark County (6)
People born in Clark County, including botanist George Harrison Shull, politician Michael D. White, judge John Wesley Warrington, .
More notable people
- William N. Brewster (American missionary) he was born in 05/12/1862
- Mary Kornbluth (science fiction editor and author) she was born in 23/09/1920
- Ortha Orrie Barr Sr. (American attorney, businessman and politician) he was born in 24/02/1879
Other places with the same name (11)
- Clark County, Nevada county in Nevada, United States with a population of 2,315,963 people.
- Clark County, Washington county in Washington, United States with a population of 496,865 people.
- Clark County, Indiana county in Indiana, United States with a population of 119,266 people.
- Clark County, Kentucky county in Kentucky, United States with a population of 36,463 people.
- Clark County, Wisconsin county in Wisconsin, United States with a population of 34,720 people.
- Clark County, Arkansas county in Arkansas, United States with a population of 22,103 people.
- Clark County, Illinois county in Illinois, United States with a population of 15,268 people.
- Clark County, Missouri county in Missouri, United States with a population of 6,830 people.
- Clark County, South Dakota county in South Dakota, United States with a population of 3,802 people.
- Clark County, Kansas county in Kansas, United States with a population of 1,963 people.
- Clark County, Idaho county in Idaho, United States with a population of 845 people.
Ohio Other Counties (more counties)
| County Name | Population | Title |
|---|---|---|
| Franklin County | 1,324,624 | County in Massachusetts, United States |
| Cuyahoga County | 1,227,883 | County in Ohio, United States |
| Columbus | 884,356 | The fifteenth most populous city in the United States and the center of the Columbus metropolitan area. |
| Hamilton County | 817,985 | County in New York, United States |
| Summit County | 538,866 | County in northern Utah, United States |
| Montgomery County | 531,610 | County in Ohio, United States |
| Lucas County | 428,294 | County in Ohio, United States |
| Butler County | 385,648 | County in Ohio, United States of America |
| Cleveland | 378,589 | The second most populous city in Ohio and the center of the Cleveland metropolitan area. |
| Stark County | 369,772 | County in Ohio, United States |
| Lorain County | 312,172 | County in Ohio, United States |
| Cincinnati | 304,548 | The third most populous city in Ohio and the center of the Cincinnati metropolitan area. |
| Toledo | 271,455 | The fourth most populous city in Ohio and the center of the Toledo metropolitan area. |
| Warren County | 238,412 | County in New York, United States |
| Lake County | 229,569 | County in Ohio, United States |
| Mahoning County | 226,075 | County in Ohio, United States |