Data / Rankings / Graduate or professional degree, population 25 and over / Counties in Illinois

Counties in Illinois by graduate or professional degree, population 25 and over

Champaign County had the highest graduate or professional degree, population 25 and over of 102 counties in 2022, at 24.9%. Brown County had the lowest, at 3.3%. The median was 6.8% and the figure for Illinois was 14.7%. Source: the U.S. Census Bureau.

Keep it in a collection in your library.
Highest24.9Champaign County
Lowest3.3Brown County
Median6.8102 counties
Illinois14.7History

Map of counties, 2022

Adams County: 9 %Alexander County: 4.4 %Bond County: 8.9 %Boone County: 8.9 %Brown County: 3.3 %Bureau County: 7.3 %Calhoun County: 5.7 %Carroll County: 5.1 %Cass County: 4.9 %Champaign County: 24.9 %Christian County: 4.8 %Clark County: 7.8 %Clay County: 5.4 %Clinton County: 7.1 %Coles County: 11 %Cook County: 17.3 %Crawford County: 6.6 %Cumberland County: 5.8 %DeKalb County: 13.3 %De Witt County: 7.2 %Douglas County: 5.9 %DuPage County: 20.7 %Edgar County: 5.4 %Edwards County: 3.9 %Effingham County: 8.2 %Fayette County: 4.1 %Ford County: 8 %Franklin County: 5.4 %Fulton County: 5.5 %Gallatin County: 4.9 %Greene County: 4.8 %Grundy County: 9 %Hamilton County: 7.3 %Hancock County: 7.6 %Hardin County: 5.3 %Henderson County: 5.1 %Henry County: 8.1 %Iroquois County: 4.6 %Jackson County: 17.7 %Jasper County: 6.4 %Jefferson County: 6.6 %Jersey County: 8.3 %Jo Daviess County: 9.7 %Johnson County: 4.9 %Kane County: 13 %Kankakee County: 8.1 %Kendall County: 13.2 %Knox County: 6.8 %Lake County: 19.6 %LaSalle County: 6.1 %Lawrence County: 5 %Lee County: 6.7 %Livingston County: 6.4 %Logan County: 6.5 %McDonough County: 15.2 %McHenry County: 12 %McLean County: 15.5 %Macon County: 8 %Macoupin County: 5.9 %Madison County: 10.9 %Marion County: 5.6 %Marshall County: 5 %Mason County: 5.1 %Massac County: 4.6 %Menard County: 10.2 %Mercer County: 6.4 %Monroe County: 13.9 %Montgomery County: 6.6 %Morgan County: 7.3 %Moultrie County: 6.8 %Ogle County: 8.2 %Peoria County: 13.2 %Perry County: 3.5 %Piatt County: 11.3 %Pike County: 5 %Pope County: 5 %Pulaski County: 5.5 %Putnam County: 8.5 %Randolph County: 5.1 %Richland County: 6.3 %Rock Island County: 8.8 %St. Clair County: 12.6 %Saline County: 6.1 %Sangamon County: 13.9 %Schuyler County: 5.7 %Scott County: 4.9 %Shelby County: 5.1 %Stark County: 5.4 %Stephenson County: 7.2 %Tazewell County: 8.8 %Union County: 6.8 %Vermilion County: 5.8 %Wabash County: 6.9 %Warren County: 7 %Washington County: 8 %Wayne County: 5.2 %White County: 6 %Whiteside County: 7.5 %Will County: 13.4 %Williamson County: 10.9 %Winnebago County: 8.8 %Woodford County: 13 %
  • Under 5.1
  • 5.1 to 5.8
  • 5.8 to 6.8
  • 6.8 to 8.1
  • 8.1 to 11
  • 11 and over
%, 2022. Source: Invokely calculation with data from U.S. Census Bureau. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2022

Champaign County: 24.9 %Champaign County24.9DuPage County: 20.7 %DuPage County20.7Lake County: 19.6 %Lake County19.6Jackson County: 17.7 %Jackson County17.7Cook County: 17.3 %Cook County17.3McLean County: 15.5 %McLean County15.5McDonough County: 15.2 %McDonough County15.2Monroe County: 13.9 %Monroe County13.9Sangamon County: 13.9 %Sangamon County13.9Will County: 13.4 %Will County13.4DeKalb County: 13.3 %DeKalb County13.3Peoria County: 13.2 %Peoria County13.2Kendall County: 13.2 %Kendall County13.2Woodford County: 13 %Woodford County13Kane County: 13 %Kane County13St. Clair County: 12.6 %St. Clair County12.6McHenry County: 12 %McHenry County12Piatt County: 11.3 %Piatt County11.3Coles County: 11 %Coles County11Madison County: 10.9 %Madison County10.9Williamson County: 10.9 %Williamson County10.9Menard County: 10.2 %Menard County10.2Jo Daviess County: 9.7 %Jo Daviess County9.7Adams County: 9 %Adams County9Grundy County: 9 %Grundy County9Boone County: 8.9 %Boone County8.9Bond County: 8.9 %Bond County8.9Winnebago County: 8.8 %Winnebago County8.8Tazewell County: 8.8 %Tazewell County8.8Rock Island County: 8.8 %Rock Island County8.8Putnam County: 8.5 %Putnam County8.5Jersey County: 8.3 %Jersey County8.3Effingham County: 8.2 %Effingham County8.2Ogle County: 8.2 %Ogle County8.2Henry County: 8.1 %Henry County8.1Kankakee County: 8.1 %Kankakee County8.1Ford County: 8 %Ford County8Washington County: 8 %Washington County8Macon County: 8 %Macon County8Clark County: 7.8 %Clark County7.8Champaign County: 24.9 %Champaign County24.9DuPage County: 20.7 %DuPage County20.7Lake County: 19.6 %Lake County19.6Jackson County: 17.7 %Jackson County17.7Cook County: 17.3 %Cook County17.3McLean County: 15.5 %McLean County15.5McDonough County: 15.2 %McDonough County15.2Monroe County: 13.9 %Monroe County13.9Sangamon County: 13.9 %Sangamon County13.9Will County: 13.4 %Will County13.4DeKalb County: 13.3 %DeKalb County13.3Peoria County: 13.2 %Peoria County13.2Kendall County: 13.2 %Kendall County13.2Woodford County: 13 %Woodford County13Kane County: 13 %Kane County13St. Clair County: 12.6 %St. Clair County12.6McHenry County: 12 %McHenry County12Piatt County: 11.3 %Piatt County11.3Coles County: 11 %Coles County11Madison County: 10.9 %Madison County10.9Williamson County: 10.9 %Williamson County10.9Menard County: 10.2 %Menard County10.2Jo Daviess County: 9.7 %Jo Daviess County9.7Adams County: 9 %Adams County9Grundy County: 9 %Grundy County9Boone County: 8.9 %Boone County8.9Bond County: 8.9 %Bond County8.9Winnebago County: 8.8 %Winnebago County8.8Tazewell County: 8.8 %Tazewell County8.8Rock Island County: 8.8 %Rock Island County8.8Putnam County: 8.5 %Putnam County8.5Jersey County: 8.3 %Jersey County8.3Effingham County: 8.2 %Effingham County8.2Ogle County: 8.2 %Ogle County8.2Henry County: 8.1 %Henry County8.1Kankakee County: 8.1 %Kankakee County8.1Ford County: 8 %Ford County8Washington County: 8 %Washington County8Macon County: 8 %Macon County8Clark County: 7.8 %Clark County7.8
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-12.

Full ranking

RankCounties2022 (%)Change on 2021
1Champaign County24.9+0.1 pts
2DuPage County20.7+0.5 pts
3Lake County19.6+0.3 pts
4Jackson County17.70 pts
5Cook County17.3+0.3 pts
6McLean County15.5+0.2 pts
7McDonough County15.2-0.7 pts
8Monroe County13.9-0 pts
8Sangamon County13.9+0.6 pts
10Will County13.4+0.5 pts
11DeKalb County13.3+0.5 pts
12Peoria County13.2+0.1 pts
13Kendall County13.2+1.2 pts
14Woodford County13+0.2 pts
15Kane County13+0.1 pts
16St. Clair County12.6+0.4 pts
17McHenry County12+0.3 pts
18Piatt County11.3+1.2 pts
19Coles County11+1 pts
20Madison County10.9+0.1 pts
21Williamson County10.9+0.4 pts
22Menard County10.2+0.7 pts
23Jo Daviess County9.7+0.3 pts
24Adams County9+0.4 pts
25Grundy County9-0.2 pts
26Boone County8.9-0.8 pts
27Bond County8.9+0.4 pts
28Winnebago County8.8+0.6 pts
29Tazewell County8.8+0.1 pts
30Rock Island County8.8+0.2 pts
31Putnam County8.5+0.7 pts
32Jersey County8.3-0.3 pts
33Effingham County8.2+0.8 pts
34Ogle County8.2+0.5 pts
35Henry County8.10 pts
36Kankakee County8.1+0.5 pts
37Ford County8-0.7 pts
38Washington County8-0.3 pts
39Macon County8+0.1 pts
40Clark County7.8-0.3 pts
41Hancock County7.6+0.1 pts
42Whiteside County7.5+0.3 pts
43Morgan County7.3+0.7 pts
44Bureau County7.3+0.2 pts
45Hamilton County7.3+0.4 pts
46Stephenson County7.20 pts
47De Witt County7.2+0.6 pts
48Clinton County7.1+0.5 pts
49Warren County7-0.2 pts
50Wabash County6.9-0.3 pts
51Union County6.8-0 pts
52Knox County6.8+0.2 pts
53Moultrie County6.8-0.3 pts
54Lee County6.7+0.4 pts
55Crawford County6.6+0.4 pts
56Montgomery County6.6-0.2 pts
57Jefferson County6.6+0.2 pts
58Logan County6.5-0.1 pts
59Mercer County6.4-0.1 pts
60Jasper County6.4+0.2 pts
61Livingston County6.4+0.7 pts
62Richland County6.3+0.3 pts
63LaSalle County6.1-0.1 pts
64Saline County6.1+0.4 pts
65White County6+0.5 pts
66Douglas County5.9+0.4 pts
67Macoupin County5.9+0.5 pts
68Cumberland County5.8-0.2 pts
69Vermilion County5.8+0.1 pts
70Calhoun County5.7-0.5 pts
71Schuyler County5.7+0.1 pts
72Marion County5.6+0.4 pts
73Pulaski County5.5-0.6 pts
74Fulton County5.50 pts
75Clay County5.4-0.4 pts
76Edgar County5.4+0.2 pts
77Franklin County5.4+0.4 pts
77Stark County5.4-0 pts
79Hardin County5.3+0.8 pts
80Wayne County5.2+0.3 pts
81Henderson County5.1+0.4 pts
82Mason County5.10 pts
82Randolph County5.1-0.7 pts
84Shelby County5.1+0.1 pts
85Carroll County5.1-0.4 pts
86Pope County5+0.5 pts
87Lawrence County5+0.4 pts
88Marshall County5-0.6 pts
89Pike County5-0.2 pts
90Cass County4.9+0.3 pts
91Johnson County4.9+0.7 pts
92Gallatin County4.9+0.6 pts
93Scott County4.9-0.6 pts
94Christian County4.8+0.1 pts
95Greene County4.8-0.2 pts
96Massac County4.6+0.9 pts
97Iroquois County4.6+0.2 pts
98Alexander County4.4+0.1 pts
99Fayette County4.1+0.7 pts
100Edwards County3.9+0.5 pts
101Perry County3.50 pts
102Brown County3.3+0.9 pts

Other periods

About this ranking

People aged 25 and over whose highest degree is a master's, professional school or doctorate degree, as a percentage of all people aged 25 and over. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.

A subset of bachelors_degree_share, which also counts people whose highest degree is a bachelor's.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs (Counties in Illinois by graduate or professional degree, population 25 and over, 2022) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat

MLA 9

American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Illinois by graduate or professional degree, population 25 and over, 2022. U.S. Census Bureau, 29 Jan. 2026, https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/illinois-counties?period=2022. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. Counties in Illinois by graduate or professional degree, population 25 and over, 2022. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Also distributed by Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/illinois-counties?period=2022.

Harvard

U.S. Census Bureau (2026) American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs, Counties in Illinois by graduate or professional degree, population 25 and over, 2022 [Dataset]. Available at: https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat, via Invokely: https://invokely.ai/rankings/graduate-or-professional-degree/illinois-counties?period=2022 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_illinois_by_2022,
  author = {{U.S. Census Bureau}},
  title = {{American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Illinois by graduate or professional degree, population 25 and over, 2022}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/illinois-counties?period=2022. Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary\_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs: Counties in Illinois by graduate or professional degree, population 25 and over, 2022
PY  - 2026
DA  - 2026/01/29
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat
L2  - https://invokely.ai/rankings/graduate-or-professional-degree/illinois-counties?period=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/graduate-or-professional-degree/illinois-counties?period=2022.
N1  - Publisher attribution: U.S. Census Bureau. American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. https://www2.census.gov/programs-surveys/acs/summary_file/2022/table-based-SF/data/5YRData/acsdt5y2022-b15003.dat. Retrieved 2026-10-12.
ER  -
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Rank Counties in Illinois by graduate or professional degree, population 25 and over using official data, and cite the source.
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Questions

Which county has the highest graduate or professional degree, population 25 and over?

Champaign County, with 24.9% in 2022, according to the U.S. Census Bureau.

Which county has the lowest graduate or professional degree, population 25 and over?

Brown County, with 3.3% in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B15003: population 25 years and over with a master's, professional school or doctorate degree as a percentage of the population 25 years and over, calculated with stored inputs. Retrieved 2026-10-12.

Graduate or professional degree, population 25 and over: other rankings

Counties in Illinois: more rankings