RANKING · 2000 CENSUS · 88 SHOWN OF 88

Most population gained, Ohio counties · 2000

Ohio counties that added the most residents from the 1990 census to 2000, by raw count of people rather than percentage. This list covers the 88 counties in Ohio that qualify, ranked against each other statewide. The median across all 88 is +2,674.

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SAME RANKING BYCities States Metros

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS –

01Franklin County, OHOH1,361,536+107,541–

02Warren County, OHOH257,181+44,474–

03Delaware County, OHOH242,032+43,060–

04Butler County, OHOH400,128+41,328–

05Medina County, OHOH185,025+28,741–

06Summit County, OHOH538,376+27,909–

07Clermont County, OHOH216,977+27,790–

08Fairfield County, OHOH169,752+19,298–

09Licking County, OHOH185,564+17,191–

10Lorain County, OHOH323,219+13,538–

11Lake County, OHOH232,217+12,012–

12Greene County, OHOH174,322+11,155–

13Stark County, OHOH373,771+10,513–

14Wayne County, OHOH116,758+10,103–

15Geauga County, OHOH95,676+9,766–

16Portage County, OHOH163,404+9,476–

17Union County, OHOH73,446+8,940–

18Wood County, OHOH134,176+7,796–

19Brown County, OHOH44,397+7,319–

20Knox County, OHOH64,002+7,027–

21Tuscarawas County, OHOH92,373+6,824–

22Holmes County, OHOH44,970+6,094–

23Hancock County, OHOH75,034+5,759–

24Miami County, OHOH112,634+5,686–

25Highland County, OHOH43,823+5,147–

26Clinton County, OHOH42,301+5,128–

27Ashland County, OHOH52,523+5,016–

28Pickaway County, OHOH62,978+4,472–

29Ross County, OHOH76,429+4,015–

30Morrow County, OHOH36,305+3,879–

31Columbiana County, OHOH99,377+3,799–

32Logan County, OHOH46,302+3,695–

33Fulton County, OHOH41,853+3,586–

34Pike County, OHOH27,061+3,446–

35Huron County, OHOH58,250+3,247–

36Madison County, OHOH46,985+3,145–

37Shelby County, OHOH48,065+2,995–

38Ashtabula County, OHOH96,713+2,907–

39Champaign County, OHOH38,820+2,871–

40Erie County, OHOH73,296+2,772–

41Noble County, OHOH14,276+2,722–

42Richland County, OHOH124,893+2,715–

43Hocking County, OHOH27,512+2,708–

44Athens County, OHOH63,197+2,674–

45Perry County, OHOH35,918+2,521–

46Muskingum County, OHOH87,014+2,517–

47Jackson County, OHOH32,817+2,411–

48Carroll County, OHOH26,475+2,315–

49Williams County, OHOH36,549+2,232–

50Preble County, OHOH40,664+2,224–

51Auglaize County, OHOH45,909+2,026–

52Adams County, OHOH27,865+1,959–

53Marion County, OHOH65,115+1,943–

54Guernsey County, OHOH38,379+1,768–

55Vinton County, OHOH12,645+1,708–

56Mercer County, OHOH42,737+1,481–

57Coshocton County, OHOH37,188+1,228–

58Washington County, OHOH58,389+997–

59Fayette County, OHOH28,552+967–

60Ottawa County, OHOH39,481+956–

61Putnam County, OHOH34,380+907–

62Hardin County, OHOH30,072+834–

63Morgan County, OHOH13,626+703–

64Wyandot County, OHOH21,567+654–

65Lawrence County, OHOH55,710+485–

66Defiance County, OHOH38,292+150–

67Gallia County, OHOH29,072+115–

68Henry County, OHOH27,598+102–

69Meigs County, OHOH21,587+85–

70Sandusky County, OHOH58,655-171–

71Paulding County, OHOH18,727-195–

72Harrison County, OHOH14,070-229–

73Darke County, OHOH51,520-310–

74Monroe County, OHOH12,994-317–

75Van Wert County, OHOH29,013-805–

76Belmont County, OHOH64,434-848–

77Crawford County, OHOH41,896-904–

78Seneca County, OHOH54,522-1,050–

79Scioto County, OHOH71,365-1,132–

80Allen County, OHOH100,881-1,282–

81Trumbull County, OHOH198,972-2,697–

82Clark County, OHOH135,340-2,806–

83Jefferson County, OHOH63,597-6,404–

84Mahoning County, OHOH224,706-7,251–

85Lucas County, OHOH423,347-7,307–

86Montgomery County, OHOH539,598-14,747–

87Cuyahoga County, OHOH1,232,925-18,162–

88Hamilton County, OHOH838,418-20,925–

SHOWING 1–88 OF 88

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS