Hamilton County, Indiana

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Hamilton County, Indiana
Hamilton County courthouse in Noblesville, Indiana
Map of Indiana highlighting Hamilton County
Location in the U.S. state of Indiana
Map of the United States highlighting Indiana
Indiana's location in the U.S.
Founded 1823
Named for Alexander Hamilton
Seat Noblesville
Largest city Carmel
 • Total 402.44 sq mi (1,042 km2)
 • Land 394.27 sq mi (1,021 km2)
 • Water 8.17 sq mi (21 km2), 2.03%
Population (est.)
 • (2017) 323,747
 • Density 690/sq mi (266/km2)
Congressional district 5th
Time zone Eastern: UTC−5/−4
Website www.hamiltoncounty.in.gov


  • Indiana county number 29
  • Fastest-growing county in the state
  • Most affluent county in the state

Hamilton County is a county in the U.S. state of Indiana. As of the 2010 census, the county's population was 274,569.[1] The county seat is Noblesville.[2]

Cities[change | change source]

Towns[change | change source]

References[change | change source]

  1. "Hamilton County QuickFacts". United States Census Bureau. Retrieved November 8, 2015. 
  2. "Find a County". National Association of Counties. Retrieved November 8, 2015.