RANKING · 2010 CENSUS · 102 SHOWN OF 102

Fastest shrinking, Illinois counties · 2010

Illinois counties with the steepest population decline since the prior decennial census. This list covers the 102 counties in Illinois that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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YEAR2000 2010 2020

RANKPLACESTATEPOPPOPULATION GROWTHVS 2000

01Pulaski County, ILIL4,820-16.2%+594%

02Alexander County, ILIL4,570-14.1%+45%

03Gallatin County, ILIL4,616-13.3%+98%

04Henderson County, ILIL5,984-10.7%−843%

05Hardin County, ILIL3,588-10.0%+33%

06Mason County, ILIL12,411-8.6%+502%

07Carroll County, ILIL15,419-7.7%+890%

08Wabash County, ILIL10,907-7.7%+477%

09Saline County, ILIL22,772-6.8%−1093%

10Greene County, ILIL11,313-5.9%+63%

11Edgar County, ILIL16,323-5.7%−1129%

12Pike County, ILIL14,231-5.5%+400%

13Warren County, ILIL16,222-5.5%+136%

14Marion County, ILIL36,382-5.4%−1828%

15Stark County, ILIL5,319-5.3%+73%

16Knox County, ILIL47,767-5.2%+429%

17Iroquois County, ILIL26,150-5.2%−390%

18Clay County, ILIL12,793-5.1%−840%

19Hancock County, ILIL16,803-5.1%−14%

20White County, ILIL13,250-4.6%−34%

21Jasper County, ILIL9,032-4.1%−11%

22Marshall County, ILIL11,473-4.1%−258%

23Clark County, ILIL15,114-4.0%−158%

24Edwards County, ILIL5,898-3.6%−43%

25Whiteside County, ILIL54,121-3.6%−558%

26Macon County, ILIL99,300-3.4%+61%

27Cook County, ILIL5,194,625-3.4%−164%

28Scott County, ILIL4,866-3.3%+73%

29Perry County, ILIL20,160-3.2%−141%

30Crawford County, ILIL18,648-3.1%−161%

31Fulton County, ILIL32,901-3.1%−792%

32Mercer County, ILIL15,229-3.1%+60%

33Jefferson County, ILIL36,147-3.0%−137%

34Morgan County, ILIL32,515-2.9%−585%

35Washington County, ILIL13,564-2.9%−333%

36Logan County, ILIL27,182-2.8%−325%

37Vermilion County, ILIL71,259-2.7%−44%

38Union County, ILIL16,656-2.7%−169%

39Stephenson County, ILIL43,220-2.6%−234%

40Macoupin County, ILIL43,748-2.6%−191%

41Shelby County, ILIL20,576-2.3%−182%

42Johnson County, ILIL13,363-2.3%−117%

43Wayne County, ILIL15,882-2.3%+337%

44Hamilton County, ILIL7,859-1.9%−233%

45Livingston County, ILIL35,057-1.8%−291%

46Cumberland County, ILIL10,208-1.8%−133%

47Montgomery County, ILIL28,076-1.8%+623%

48Adams County, ILIL64,267-1.7%−152%

49Christian County, ILIL33,443-1.6%−158%

50Bureau County, ILIL32,510-1.5%+185%

51De Witt County, ILIL15,118-1.4%−183%

52Putnam County, ILIL5,619-1.3%−121%

53Randolph County, ILIL29,921-1.2%−38%

54Rock Island County, ILIL141,869-1.2%−380%

55Ford County, ILIL13,216-1.1%+372%

56Henry County, ILIL48,095-1.0%+285%

57McDonough County, ILIL25,916-0.9%−86%

58Cass County, ILIL12,463-0.4%−120%

59Brown County, ILIL6,401-0.2%−101%

60Lee County, ILIL32,914-0.1%−102%

61Effingham County, ILIL34,519-0.1%−101%

62Calhoun County, ILIL4,300+0.1%−102%

63Douglas County, ILIL19,880+0.3%−88%

64Richland County, ILIL15,219+0.5%−122%

65Bond County, ILIL16,959+0.8%−96%

66Jackson County, ILIL52,501+1.0%−143%

67Coles County, ILIL46,607+1.3%−58%

68Pope County, ILIL3,672+1.3%+41%

69Franklin County, ILIL36,916+1.4%−143%

70DuPage County, ILIL934,298+1.4%−91%

71Fayette County, ILIL20,790+1.6%−64%

72Peoria County, ILIL178,553+1.7%+403%

73Jo Daviess County, ILIL21,594+1.7%−19%

74Menard County, ILIL11,863+1.8%−85%

75Massac County, ILIL13,502+1.8%−36%

76LaSalle County, ILIL107,773+2.2%−50%

77Piatt County, ILIL16,791+2.2%−58%

78Moultrie County, ILIL14,371+3.9%+53%

79Madison County, ILIL263,110+4.0%+3%

80Sangamon County, ILIL194,170+4.5%−24%

81Ogle County, ILIL51,399+4.8%−56%

82Schuyler County, ILIL6,657+4.9%−220%

83Tazewell County, ILIL130,049+5.4%+39%

84St. Clair County, ILIL250,708+5.5%−312%

85Winnebago County, ILIL283,674+6.1%−40%

86Jersey County, ILIL21,160+6.1%+11%

87Clinton County, ILIL37,128+6.3%+34%

88Williamson County, ILIL67,225+8.3%+34%

89Lawrence County, ILIL13,790+8.9%−375%

90Woodford County, ILIL38,111+9.0%+4%

91Lake County, ILIL719,339+9.2%−63%

92Kankakee County, ILIL105,525+9.3%+18%

93Champaign County, ILIL209,972+11.9%+210%

94McLean County, ILIL171,419+12.7%−23%

95DeKalb County, ILIL101,835+18.2%+28%

96McHenry County, ILIL317,751+18.7%−55%

97Monroe County, ILIL34,840+19.3%−17%

98Kane County, ILIL525,757+27.5%+1%

99Boone County, ILIL53,568+29.6%−17%

100Grundy County, ILIL54,052+33.4%+108%

101Will County, ILIL712,253+34.9%−14%

102Kendall County, ILIL145,470+110.4%+187%

SHOWING 1–102 OF 102

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