Ohio Counties Map

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Hover/click a county for data.

Name 2022 Population Growth Since 2010 Land Area (mi²) Density (mi²)
Franklin County1,343,93015.24%532.382,524.38
Cuyahoga County1,215,130-4.93%457.152,658.05
Hamilton County823,5572.65%405.912,028.93
Summit County539,993-0.30%412.841,308.00
Montgomery County531,948-0.68%461.561,152.51
Lucas County424,556-3.82%340.861,245.56
Butler County386,5364.72%467.00827.70
Stark County368,680-1.78%575.33640.82
Lorain County312,1763.55%491.12635.64
Warren County242,57313.66%401.33604.42
Lake County230,2900.12%228.041,009.88
Mahoning County227,084-4.74%411.51551.83
Delaware County221,43526.46%443.19499.63
Clermont County209,1345.83%452.11462.57
Trumbull County196,279-6.46%618.30317.45
Medina County182,0505.53%421.39432.02
Licking County180,4508.25%682.36264.45
Greene County173,4107.32%413.73419.14
Portage County162,3580.60%487.41333.11
Fairfield County162,35010.88%504.41321.86
Clark County132,748-4.00%397.48333.97
Wood County131,9454.76%617.21213.78
Richland County121,655-2.02%495.26245.64
Wayne County115,4700.94%554.93208.08
Miami County109,8227.16%406.58270.11
Allen County101,229-4.82%402.50251.50
Columbiana County100,113-7.21%531.93188.21
Ashtabula County96,203-5.13%701.94137.05
Geauga County92,761-0.67%400.17231.81
Tuscarawas County91,711-0.90%567.64161.57
Muskingum County86,4670.29%664.61130.10
Ross County76,012-2.67%689.19110.29
Hancock County75,3720.91%531.36141.85
Scioto County74,816-6.09%610.22122.61
Erie County73,525-4.49%251.60292.24
Belmont County65,425-6.98%532.13122.95
Athens County64,751-0.65%503.63128.57
Marion County64,091-3.56%403.76158.74
Jefferson County63,978-8.17%408.21156.73
Knox County63,5884.09%525.51121.00
Union County62,60619.33%431.74145.01
Pickaway County59,5976.92%501.33118.88
Washington County59,311-3.89%631.9793.85
Lawrence County58,551-6.20%453.37129.15
Huron County57,972-2.67%491.49117.95
Sandusky County57,852-4.98%408.46141.64
Seneca County55,130-2.63%551.02100.05
Ashland County52,818-0.94%422.95124.88
Darke County50,555-4.55%598.1284.52
Shelby County48,494-1.73%407.68118.95
Logan County46,6922.07%458.43101.85
Madison County45,7575.35%465.8998.21
Auglaize County45,416-1.05%401.39113.15
Holmes County44,0833.79%422.53104.33
Highland County43,488-0.30%553.0878.63
Brown County43,018-4.11%490.0287.79
Mercer County41,8322.56%462.4590.46
Fulton County41,703-2.17%405.44102.86
Clinton County41,617-0.73%408.68101.83
Crawford County41,524-5.10%401.79103.35
Preble County40,495-3.97%424.2395.46
Ottawa County39,793-3.79%254.93156.09
Champaign County39,185-2.23%428.6791.41
Guernsey County38,467-4.20%522.2573.66
Defiance County38,081-2.56%411.4592.55
Coshocton County36,612-0.88%563.9164.92
Williams County36,551-2.56%420.9786.83
Perry County36,4191.06%407.9989.27
Morrow County35,9733.40%406.1388.57
Putnam County34,038-1.27%482.5270.54
Jackson County32,554-2.09%420.3077.45
Hardin County31,206-2.87%470.4066.34
Gallia County29,757-4.23%466.5363.78
Van Wert County28,341-1.18%409.1569.27
Fayette County28,141-3.01%406.3669.25
Hocking County27,985-5.06%421.3366.42
Adams County27,710-2.90%583.8747.46
Pike County27,292-4.61%440.2861.99
Henry County26,751-5.04%416.0164.30
Carroll County26,410-8.44%394.6166.93
Meigs County22,436-5.46%430.1052.16
Wyandot County21,334-5.55%406.8652.44
Paulding County18,462-5.60%416.4344.33
Harrison County14,659-7.37%402.3336.44
Noble County14,655-0.03%398.0136.82
Morgan County14,289-4.96%416.4234.31
Monroe County13,255-9.27%455.7229.09
Vinton County12,905-3.73%412.3631.30

Counties in Ohio

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)

Sources