RANKING · 2010 CENSUS · 88 SHOWN OF 88

Most sparsely populated, Ohio counties · 2010

Ohio counties with the fewest residents per square mile (2023). This list covers the 88 counties in Ohio that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most densely populated Best broadband access Worst broadband access

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS 2000

01Monroe County, OHOH12,99432−4%

02Vinton County, OHOH12,64533+5%

03Morgan County, OHOH13,62636+1%

04Noble County, OHOH14,27637+4%

05Harrison County, OHOH14,07039+0%

06Paulding County, OHOH18,72747−3%

07Adams County, OHOH27,86549+4%

08Meigs County, OHOH21,58755+3%

09Wyandot County, OHOH21,56756−1%

10Pike County, OHOH27,06165+4%

11Coshocton County, OHOH37,18865+1%

12Gallia County, OHOH29,07266−0%

13Henry County, OHOH27,59868−3%

14Hardin County, OHOH30,07268+0%

15Hocking County, OHOH27,51270+4%

16Van Wert County, OHOH29,01370−3%

17Fayette County, OHOH28,55271+2%

18Putnam County, OHOH34,38071−1%

19Carroll County, OHOH26,47573+0%

20Guernsey County, OHOH38,37977−2%

21Highland County, OHOH43,82379+7%

22Jackson County, OHOH32,81779+2%

23Morrow County, OHOH36,30586+10%

24Mercer County, OHOH42,73788−0%

25Perry County, OHOH35,91888+6%

26Darke County, OHOH51,52089−1%

27Williams County, OHOH36,54989−4%

28Brown County, OHOH44,39792+6%

29Madison County, OHOH46,98593+8%

30Champaign County, OHOH38,82093+3%

31Defiance County, OHOH38,29295−1%

32Washington County, OHOH58,38998−2%

33Preble County, OHOH40,664100−0%

34Logan County, OHOH46,302100−0%

35Holmes County, OHOH44,970100+9%

36Clinton County, OHOH42,301103+4%

37Seneca County, OHOH54,522103−3%

38Fulton County, OHOH41,853105+1%

39Crawford County, OHOH41,896109−7%

40Pickaway County, OHOH62,978111+6%

41Ross County, OHOH76,429113+6%

42Auglaize County, OHOH45,909114−1%

43Knox County, OHOH64,002116+12%

44Huron County, OHOH58,250121+0%

45Union County, OHOH73,446121+28%

46Shelby County, OHOH48,065121+3%

47Ashland County, OHOH52,523126+1%

48Athens County, OHOH63,197129+4%

49Muskingum County, OHOH87,014130+2%

50Scioto County, OHOH71,365130+0%

51Belmont County, OHOH64,434132+0%

52Lawrence County, OHOH55,710138+0%

53Hancock County, OHOH75,034141+5%

54Ashtabula County, OHOH96,713144−1%

55Sandusky County, OHOH58,655149−1%

56Ottawa County, OHOH39,481163+1%

57Tuscarawas County, OHOH92,373163+2%

58Marion County, OHOH65,115165+0%

59Jefferson County, OHOH63,597171−6%

60Columbiana County, OHOH99,377203−4%

61Wood County, OHOH134,176203+4%

62Wayne County, OHOH116,758206+3%

63Geauga County, OHOH95,676233+3%

64Licking County, OHOH185,564244+14%

65Richland County, OHOH124,893251−3%

66Miami County, OHOH112,634252+4%

67Allen County, OHOH100,881264−2%

68Fairfield County, OHOH169,752290+19%

69Erie County, OHOH73,296307−3%

70Portage County, OHOH163,404331+6%

71Trumbull County, OHOH198,972341−7%

72Clark County, OHOH135,340349−4%

73Greene County, OHOH174,322391+9%

74Delaware County, OHOH242,032393+58%

75Medina County, OHOH185,025409+14%

76Clermont County, OHOH216,977436+11%

77Warren County, OHOH257,181530+34%

78Mahoning County, OHOH224,706580−7%

79Lorain County, OHOH323,219614+6%

80Stark County, OHOH373,771653−1%

81Butler County, OHOH400,128789+11%

82Lake County, OHOH232,2171,003+1%

83Montgomery County, OHOH539,5981,160−4%

84Lucas County, OHOH423,3471,301−3%

85Summit County, OHOH538,3761,312−0%

86Hamilton County, OHOH838,4181,979−5%

87Franklin County, OHOH1,361,5362,185+9%

88Cuyahoga County, OHOH1,232,9252,800−8%

SHOWING 1–88 OF 88

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UPDATED 2026-06-02 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES