Adams County , Indiana

Adams County: County in Indiana, United States

Adams County locator map
Location of Adams County on Indiana map.


Adams County is a county located in the U.S. state of Indiana. As of the 2010 census, the population was 34,387 and a population density of 39 people per km². After 9 years in 2019 county had an estimated population of 35,777 inhabitants. Its county seat is Decatur. The county was created 185 years ago in 1836.


Adams County is located at 40°44'44"N 84°56'12"W (40.7456600, -84.9366500). It has 5 neighbors: Allen County, Jay County, Wells County, Mercer County and Van Wert County.

Decatur-indiana-courthouse image

The largest city of Adams County is Decatur with a population of 34,739. Other cities include, Berne population 4,247 and Geneva population 1,320. See all Adams County cities & populated places.


Adams County forecast: A chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 30%. more

Decatur-indiana-courthouse image

Adams County map

Adams County Quick Facts

Population : 35,777 (2019)
Country : United States of America
State : Indiana (United States)
Different from : Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County, Adams County
Area : 880 km2
Water as percent of area : 0.28%
Land as percent of area : 99.72%
Named for : John Quincy Adams
Capital : Decatur
Establishment : March 03, 1836
Time Zone : Eastern Time Zone
Local time : 07:06:17 (1st August 2021)
Density : 41 Pop. per km² as of 2019
Population growth : 3.89% (2010-2019)
Weather : 82℉ Chance Showers And Thunderstorms 7-days weather

Adams County has 5 neighbours.

  • Decatur


The population of Adams County increased by 3.89% in 9 years.

Year Population % Change Method
2010 34,387 - census
2011 34,368 -0.06% estimation process
2012 34,400 0.09% estimation process
2013 34,644 0.7% estimation process
2014 34,758 0.33% estimation process
2015 34,945 0.54% estimation process
2016 35,178 0.66% estimation process
2017 35,385 0.58% estimation process
2018 35,595 0.59% estimation process
2019 35,777 0.51% estimation process

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Other places with the same name (11)

Adams County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Adams County.

City Name Population Title
Decatur 34,739 City in Indiana, United States
Berne 4,247 City in Indiana, United States
Geneva 1,320
Preble 1,111 Township in Adams County, Indiana
Monroe 559 Civil town in Adams County, Wisconsin, United States

Indiana Other Counties (more counties)

County Name Population Title
Indiana 6,732,219 State of the United States of America
Marion County 964,582 County in Oregon, United States
Indianapolis 886,220 City in and county seat of Marion County, Indiana, United States and the Indiana federated state capital city
Lake County 485,493 County in Indiana, United States
Allen County 379,299 County in Indiana, United States
Hamilton County 338,011 County in Indiana, United States
Saint Joseph County 271,826 County in Indiana, United States
Fort Wayne 270,402 County seat of Allen County, Indiana, United States
Elkhart County 206,341 County in Indiana, United States
Tippecanoe County 195,732 County in the northwest quadrant of Indiana, United States
Vanderburgh County 181,451 County in Indiana, United States
Porter County 170,389 County in Indiana, United States
Hendricks County 170,311 County in Indiana, United States
Johnson County 158,167 County in Indiana, United States
Monroe County 148,431 County in Indiana, United States
Madison County 129,569 County in Indiana, United States

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