RANKING · 2000 CENSUS · 102 SHOWN OF 102

Most population lost, Illinois counties · 2000

Illinois counties that lost the most residents from the 1990 census to 2000, by raw count of people rather than percentage. This list covers the 102 counties in Illinois that qualify, ranked against each other statewide. The median across all 102 is +409.

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SAME RANKING BYCities States Metros

RELATEDLargest by population Fastest growing Fastest shrinking Most population gained Most densely populated Most sparsely populated

YEAR2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION CHANGEVS –

01St. Clair County, ILIL250,708-6,770–

02Vermilion County, ILIL71,259-4,338–

03Macon County, ILIL99,300-2,500–

04McDonough County, ILIL25,916-2,331–

05Jackson County, ILIL52,501-1,455–

06Franklin County, ILIL36,916-1,301–

07Hancock County, ILIL16,803-1,252–

08White County, ILIL13,250-1,151–

09Alexander County, ILIL4,570-1,036–

10Randolph County, ILIL29,921-690–

11Knox County, ILIL47,767-557–

12Greene County, ILIL11,313-556–

13Lawrence County, ILIL13,790-520–

14Jasper County, ILIL9,032-492–

15Edwards County, ILIL5,898-469–

16Gallatin County, ILIL4,616-464–

17Warren County, ILIL16,222-446–

18Richland County, ILIL15,219-396–

19Hardin County, ILIL3,588-389–

20Mercer County, ILIL15,229-333–

21Schuyler County, ILIL6,657-309–

22Calhoun County, ILIL4,300-238–

23Mason County, ILIL12,411-231–

24Stark County, ILIL5,319-202–

25Pike County, ILIL14,231-193–

26Bureau County, ILIL32,510-185–

27Pulaski County, ILIL4,820-175–

28Wabash County, ILIL10,907-174–

29Henry County, ILIL48,095-139–

30Carroll County, ILIL15,419-131–

31Scott County, ILIL4,866-107–

32Wayne County, ILIL15,882-90–

33Montgomery County, ILIL28,076-76–

34Ford County, ILIL13,216-34–

35Pope County, ILIL3,672+40–

36Clay County, ILIL12,793+100–

37Edgar County, ILIL16,323+109–

38Henderson County, ILIL5,984+117–

39Hamilton County, ILIL7,859+122–

40Marion County, ILIL36,382+130–

41Fulton County, ILIL32,901+170–

42Saline County, ILIL22,772+182–

43Washington County, ILIL13,564+183–

44Morgan County, ILIL32,515+219–

45Cass County, ILIL12,463+258–

46De Witt County, ILIL15,118+282–

47Marshall County, ILIL11,473+334–

48Putnam County, ILIL5,619+356–

49Moultrie County, ILIL14,371+357–

50Livingston County, ILIL35,057+377–

51Logan County, ILIL27,182+385–

52Massac County, ILIL13,502+409–

53Douglas County, ILIL19,880+458–

54Whiteside County, ILIL54,121+467–

55Jo Daviess County, ILIL21,594+468–

56Iroquois County, ILIL26,150+547–

57Cumberland County, ILIL10,208+583–

58Peoria County, ILIL178,553+606–

59Shelby County, ILIL20,576+632–

60Rock Island County, ILIL141,869+651–

61Union County, ILIL16,656+674–

62Piatt County, ILIL16,791+817–

63Fayette County, ILIL20,790+909–

64Stephenson County, ILIL43,220+927–

65Christian County, ILIL33,443+954–

66Crawford County, ILIL18,648+988–

67Clark County, ILIL15,114+1,087–

68Brown County, ILIL6,401+1,114–

69Jersey County, ILIL21,160+1,129–

70Menard County, ILIL11,863+1,322–

71Macoupin County, ILIL43,748+1,340–

72Johnson County, ILIL13,363+1,531–

73Coles County, ILIL46,607+1,552–

74Clinton County, ILIL37,128+1,591–

75Lee County, ILIL32,914+1,670–

76Perry County, ILIL20,160+1,682–

77Adams County, ILIL64,267+2,187–

78Effingham County, ILIL34,519+2,560–

79Bond County, ILIL16,959+2,642–

80Woodford County, ILIL38,111+2,816–

81Jefferson County, ILIL36,147+3,025–

82Williamson County, ILIL67,225+3,563–

83LaSalle County, ILIL107,773+4,596–

84Tazewell County, ILIL130,049+4,793–

85Ogle County, ILIL51,399+5,075–

86Monroe County, ILIL34,840+5,197–

87Grundy County, ILIL54,052+5,198–

88Champaign County, ILIL209,972+6,644–

89Kankakee County, ILIL105,525+7,578–

90Madison County, ILIL263,110+9,703–

91Sangamon County, ILIL194,170+10,565–

92Boone County, ILIL53,568+10,980–

93DeKalb County, ILIL101,835+11,037–

94Kendall County, ILIL145,470+15,131–

95McLean County, ILIL171,419+21,253–

96Winnebago County, ILIL283,674+25,505–

97McHenry County, ILIL317,751+76,836–

98Kane County, ILIL525,757+86,648–

99DuPage County, ILIL934,298+122,495–

100Lake County, ILIL719,339+127,938–

101Will County, ILIL712,253+144,953–

102Cook County, ILIL5,194,625+271,674–

SHOWING 1–102 OF 102

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