Ranking of Illinois Counties By Percentage of Population with Norwegian Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 141.31K people in Illinois with Norwegian ancestry (1.10% of Illinois population). Among all Illinois counties, Grundy County had the highest percentage of its population with Norwegian ancestry (5.60%), followed by DeKalb County (4.51%), and Boone County (4.45%).
The chart and table below shows the top 10 counties with high percentage of its population having Norwegian ancestry.
You can see similar information for other states and for other ancestry groups in Illinois.
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Related Topics: Illinois ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Illinois Counties By Percentage of Population with Norwegian Ancestry in 2021
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| Rank | County | Percentage of Pop. (%) |
|---|---|---|
| 1 | Grundy County | 5.60 |
| 2 | DeKalb County | 4.51 |
| 3 | Boone County | 4.45 |
| 4 | LaSalle County | 4.17 |
| 5 | Ogle County | 3.45 |
| 6 | Winnebago County | 2.94 |
| 7 | Jo Daviess County | 2.86 |
| 8 | Kendall County | 2.71 |
| 9 | Stephenson County | 2.22 |
| 10 | McHenry County | 2.18 |
| 11 | Lee County | 2.07 |
| 12 | Woodford County | 1.89 |
| 13 | Kane County | 1.83 |
| 14 | Putnam County | 1.69 |
| 15 | Livingston County | 1.64 |
| 16 | Pope County | 1.55 |
| 17 | Lake County | 1.51 |
| 18 | Rock Island County | 1.48 |
| 19 | DuPage County | 1.43 |
| 20 | Henry County | 1.42 |
| 21 | Piatt County | 1.39 |
| 22 | Bureau County | 1.38 |
| 23 | McLean County | 1.31 |
| 24 | Hamilton County | 1.18 |
| 25 | Warren County | 1.17 |
| 26 | Ford County | 1.07 |
| 27 | Hancock County | 1.04 |
| 28 | Iroquois County | 1.02 |
| 29 | McDonough County | 1.01 |
| 30 | Whiteside County | 0.99 |
| 31 | De Witt County | 0.92 |
| 31 | Stark County | 0.92 |
| 32 | Peoria County | 0.91 |
| 33 | Will County | 0.90 |
| 34 | Henderson County | 0.89 |
| 35 | Champaign County | 0.87 |
| 35 | Richland County | 0.87 |
| 35 | Tazewell County | 0.87 |
| 36 | Carroll County | 0.86 |
| 37 | Monroe County | 0.84 |
| 37 | Vermilion County | 0.84 |
| 38 | Massac County | 0.83 |
| 39 | Mason County | 0.81 |
| 40 | Knox County | 0.80 |
| 41 | Jackson County | 0.79 |
| 42 | Kankakee County | 0.74 |
| 42 | Mercer County | 0.74 |
| 43 | Brown County | 0.73 |
| 43 | Cook County | 0.73 |
| 44 | Edwards County | 0.72 |
| 44 | Sangamon County | 0.72 |
| 45 | St. Clair County | 0.64 |
| 45 | Williamson County | 0.64 |
| 46 | Macon County | 0.56 |
| 46 | Washington County | 0.56 |
| 47 | Adams County | 0.55 |
| 47 | Fulton County | 0.55 |
| 47 | Morgan County | 0.55 |
| 48 | Douglas County | 0.52 |
| 49 | Franklin County | 0.50 |
| 50 | Menard County | 0.49 |
| 51 | Logan County | 0.48 |
| 51 | Madison County | 0.48 |
| 51 | Marshall County | 0.48 |
| 52 | Crawford County | 0.47 |
| 53 | Christian County | 0.46 |
| 54 | Schuyler County | 0.45 |
| 55 | Coles County | 0.43 |
| 56 | Cumberland County | 0.42 |
| 57 | Union County | 0.41 |
| 58 | Wabash County | 0.40 |
| 59 | Macoupin County | 0.38 |
| 60 | Bond County | 0.37 |
| 61 | Clark County | 0.36 |
| 62 | Jefferson County | 0.35 |
| 62 | Wayne County | 0.35 |
| 63 | Clinton County | 0.34 |
| 64 | Jersey County | 0.33 |
| 64 | Perry County | 0.33 |
| 65 | Effingham County | 0.32 |
| 66 | Johnson County | 0.30 |
| 67 | Hardin County | 0.27 |
| 68 | White County | 0.26 |
| 69 | Montgomery County | 0.25 |
| 69 | Randolph County | 0.25 |
| 69 | Shelby County | 0.25 |
| 70 | Lawrence County | 0.24 |
| 70 | Pike County | 0.24 |
| 71 | Moultrie County | 0.23 |
| 72 | Marion County | 0.22 |
| 73 | Edgar County | 0.21 |
| 74 | Fayette County | 0.19 |
| 75 | Greene County | 0.17 |
| 75 | Jasper County | 0.17 |
| 76 | Scott County | 0.16 |
| 77 | Cass County | 0.12 |
| 77 | Saline County | 0.12 |
| 78 | Alexander County | 0.11 |
| 79 | Clay County | 0.08 |
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