Illinois Net Migration By County in 2021

Updated on June 21, 2025.

According to the US Census Bureau estimates, in 2021, the net migration for Illinois was -102,800. Kendall County had the highest net migration (1,963) followed by McHenry County (1,064), and Will County (663). On the other hand, Cook County had the lowest net migration (-85,963), followed by DuPage County (-6,736), and Lake County (-2,275).

Net migration for a county refers to the difference between the number of migrants, both domestic and international, moving to the county and those leaving the county. Or to put it simply, the net migration for a given county is the inbound migration minus the outbound migration for that county.

You can also see similar information for other states and also by state for the United States.

Hover over or click on the chart to see this information for each county. The data can also be filtered, sorted, and explored further in a table below.

See this for other years:
Illinois Net Migration By County in 2021
Illinois Net Migration By County in 2021
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County Net Migration
Adams -377
Alexander -77
Bond -14
Boone -193
Brown 234
Bureau -88
Calhoun 2
Carroll 125
Cass -183
Champaign 339
Christian -72
Clark -25
Clay -87
Clinton -38
Coles 177
Cook -85963
Crawford 100
Cumberland -73
DeKalb 26
De Witt 6
Douglas -70
DuPage -6736
Edgar -109
Edwards -90
Effingham -167
Fayette -18
Ford 58
Franklin 29
Fulton 30
Gallatin 2
Greene -5
Grundy 430
Hamilton -36
Hancock -79
Hardin 51
Henderson 22
Henry -85
Iroquois -46
Jackson -245
Jasper -38
Jefferson 10
Jersey -19
Jo Daviess 32
Johnson 226
Kane -1739
Kankakee -457
Kendall 1963
Knox -184
Lake -2275
LaSalle 71
Lawrence 24
Lee 255
Livingston 41
Logan 236
McDonough -136
McHenry 1064
McLean -166
Macon -910
Macoupin -112
Madison -160
Marion -115
Marshall 39
Mason -86
Massac -82
Menard -75
Mercer 29
Monroe 97
Montgomery 96
Morgan -93
Moultrie 70
Ogle -130
Peoria -1698
Perry 223
Piatt 123
Pike 51
Pope 37
Pulaski -62
Putnam -30
Randolph 258
Richland 36
Rock Island -1036
St. Clair -1648
Saline -185
Sangamon -753
Schuyler -4
Scott -65
Shelby 10
Stark -69
Stephenson -221
Tazewell -192
Union -140
Vermilion -529
Wabash -52
Warren -192
Washington -39
Wayne -94
White 100
Whiteside -21
Will 663
Williamson -17
Winnebago -1362
Woodford -123