Showing Illinois county sites. All U.S. county sites
C 78
Average overall score of 85 fully scanned Illinois county sites
5th
of 49 states, ranked by average overall score
85 of 96
Sites fully scanned. We couldn't fully scan 11, so they're listed without grades
C 76
U.S. county average overall score, 2467 fully scanned sites
Illinois's state site, illinois.gov, ranks 9th of 51 state sites with a B. State rankings.
How Illinois county overall scores are distributed
Smoothed distribution of the 85 fully scanned Illinois county sites, score 0 to 100. Height shows how many sites score near each value.
Distribution of 85 scores. The data table lists counts by score range.
- Illinois average
- U.S. county average
View the data table
| Score range | Sites |
|---|---|
| 0 to 9 | 0 |
| 10 to 19 | 0 |
| 20 to 29 | 0 |
| 30 to 39 | 0 |
| 40 to 49 | 0 |
| 50 to 59 | 1 |
| 60 to 69 | 6 |
| 70 to 79 | 46 |
| 80 to 89 | 28 |
| 90 to 100 | 4 |
Illinois counties by overall grade
Each county with a site on our list is colored by that site's grade. Select a county to open its report. The table lists every site.
- A (90 to 100)
- B to C (70 to 89)
- D to F (below 70)
- Not fully scanned
- No site on our list
1 of the 96 sites on our list could not be matched to a county boundary and appear only in the table.
Illinois counties by overall grade, compared with all U.S. counties
Share of fully scanned sites in each grade band. Illinois: 85 sites. U.S.: 2467 sites.
- A (90 to 100)
- B to C (70 to 89)
- D to F (below 70)
View the data table
| Group | A (90 to 100) | B to C (70 to 89) | D to F (below 70) |
|---|---|---|---|
| Illinois | 5% (4) | 87% (74) | 8% (7) |
| All U.S. counties | 4% (90) | 82% (2,028) | 14% (349) |
Illinois county average score by indicator, compared with all U.S. counties
Average of the 85 fully scanned Illinois county sites, score 0 to 100. U.S. average covers 2467 fully scanned county sites.
- Illinois
- U.S. counties
View the data table
| Indicator | Illinois average | U.S. counties average |
|---|---|---|
| Accessibility | 87 | 88 |
| Botability | 78 | 76 |
| Security | 83 | 83 |
| Usability | 55 | 48 |
| Readability | 62 | 62 |
Top 3 Illinois county sites by overall score
#1 in Illinois · U.S. rank 3
Cook County, IL
A 94 overall
- Accessibility A
- Botability A
- Security A
- Usability A
- Readability F
#2 in Illinois · U.S. rank 6
Hamilton County, IL
A 91 overall
- Accessibility A
- Botability A
- Security B
- Usability D
- Readability A
#3 in Illinois · U.S. rank 7
Brown County, IL
A 90 overall
- Accessibility A
- Botability B
- Security C
- Usability A
- Readability A
Most common failures by indicator
The check Illinois county sites fail most often in each indicator. Each indicator page lists the top five.
- 51% (43 of 85 sites) fail this accessibility check: Background and foreground colors have a sufficient contrast ratio. Text and background colors meet minimum contrast ratios. More accessibility failures in Illinois.
- 94% (80 of 85 sites) fail this botability check: GovernmentOrganization Schema.org type. Homepage is marked up as an official government organization. More botability failures in Illinois.
- 65% (55 of 85 sites) fail this security check: X-Content-Type-Options. The site tells browsers not to guess the type of files it serves. More security failures in Illinois.
- 96% (82 of 85 sites) fail this usability check: Open Graph image alt. The social media preview image has alt text for screen readers. More usability failures in Illinois.
- 36% (31 of 85 sites) fail this readability check: Reading level. Page text reads at or below a 7th grade level so most users can understand it. More readability failures in Illinois.
All Illinois county sites by overall score
| Rank | Site | Indicator grades | Grade |
|---|---|---|---|
| 1 |
cookcountyil.gov
Cook County, IL U.S. rank 3 |
|
A |
| 2 |
hamiltoncountyil.gov
Hamilton County, IL U.S. rank 6 |
|
A |
| 3 |
browncoil.org
Brown County, IL U.S. rank 7 |
|
A |
| 3 |
wincoil.gov
Winnebago County, IL U.S. rank 7 |
|
A |
| 4 |
gallatinco.illinois.gov
Gallatin County, IL U.S. rank 8 |
|
B |
| 4 |
marshallcountyillinois.gov
Marshall County, IL U.S. rank 8 |
|
B |
| 4 |
starkco.illinois.gov
Stark County, IL U.S. rank 8 |
|
B |
| 5 |
fayettecountyillinois.gov
Fayette County, IL U.S. rank 9 |
|
B |
| 5 |
fultoncountyil.gov
Fulton County, IL U.S. rank 9 |
|
B |
| 5 |
masoncountyil.gov
Mason County, IL U.S. rank 9 |
|
B |
| 6 |
crawfordcountyil.org
Crawford County, IL U.S. rank 10 |
|
B |
| 6 |
fordcounty.illinois.gov
Ford County, IL U.S. rank 10 |
|
B |
| 6 |
macoupincountyil.gov
Macoupin County, IL U.S. rank 10 |
|
B |
| 7 |
calhouncountyil.gov
Calhoun County, IL U.S. rank 11 |
|
B |
| 7 |
warrencountyil.gov
Warren County, IL U.S. rank 11 |
|
B |
| 8 |
edgarcountyillinois.com
Edgar County, IL U.S. rank 12 |
|
B |
| 8 |
richlandcounty.illinois.gov
Richland County, IL U.S. rank 12 |
|
B |
| 8 |
tazewell-il.gov
Tazewell County, IL U.S. rank 12 |
|
B |
| 9 |
jaspercountyillinois.gov
Jasper County, IL U.S. rank 13 |
|
B |
| 9 |
marioncountyil.gov
Marion County, IL U.S. rank 13 |
|
B |
| 9 |
randolphcountyil.gov
Randolph County, IL U.S. rank 13 |
|
B |
| 9 |
salinecounty.illinois.gov
Saline County, IL U.S. rank 13 |
|
B |
| 9 |
schuylercounty.org
Schuyler County, IL U.S. rank 13 |
|
B |
| 10 |
alexandercounty.illinois.gov
Alexander County, IL U.S. rank 14 |
|
B |
| 10 |
effinghamcountyil.gov
Effingham County, IL U.S. rank 14 |
|
B |
| 10 |
maconcounty.illinois.gov
Macon County, IL U.S. rank 14 |
|
B |
| 10 |
scottcoil.gov
Scott County, IL U.S. rank 14 |
|
B |
| 11 |
greenecountyil.org
Greene County, IL U.S. rank 15 |
|
B |
| 11 |
pulaskicountyil.net
Pulaski County, IL U.S. rank 15 |
|
B |
| 12 |
moultriecountyil.gov
Moultrie County, IL U.S. rank 17 |
|
B |
| 12 |
shelbycounty-il.gov
Shelby County, IL U.S. rank 17 |
|
B |
| 12 |
vercounty.org
Vermilion County, IL U.S. rank 17 |
|
B |
| 13 |
grundycountyil.gov
Grundy County, IL U.S. rank 18 |
|
C |
| 13 |
jerseycounty-il.gov
Jersey County, IL U.S. rank 18 |
|
C |
| 13 |
jodaviesscountyil.gov
Jo Daviess County, IL U.S. rank 18 |
|
C |
| 13 |
lakecountyil.gov
Lake County, IL U.S. rank 18 |
|
C |
| 13 |
whitecounty-il.gov
White County, IL U.S. rank 18 |
|
C |
| 14 |
carrollcountyil.gov
Carroll County, IL U.S. rank 19 |
|
C |
| 14 |
dewittcountyil.gov
DeWitt County, IL U.S. rank 19 |
|
C |
| 14 |
iroquoiscountyil.gov
Iroquois County, IL U.S. rank 19 |
|
C |
| 14 |
leecountyil.com
Lee County, IL U.S. rank 19 |
|
C |
| 14 |
peoriacounty.gov
Peoria County, IL U.S. rank 19 |
|
C |
| 15 |
jacksoncounty-il.gov
Jackson County, IL U.S. rank 20 |
|
C |
| 15 |
mcleancountyil.gov
McLean County, IL U.S. rank 20 |
|
C |
| 16 |
colesco.illinois.gov
Coles County, IL U.S. rank 21 |
|
C |
| 16 |
dupagecounty.gov
DuPage County, IL U.S. rank 21 |
|
C |
| 16 |
henrycty.com
Henry County, IL U.S. rank 21 |
|
C |
| 16 |
massaccountyil.gov
Massac County, IL U.S. rank 21 |
|
C |
| 16 |
rockislandcountyil.gov
Rock Island County, IL U.S. rank 21 |
|
C |
| 16 |
waynecountyil.gov
Wayne County, IL U.S. rank 21 |
|
C |
| 17 |
bureaucounty-il.gov
Bureau County, IL U.S. rank 22 |
|
C |
| 17 |
kanecountyil.gov
Kane County, IL U.S. rank 22 |
|
C |
| 17 |
knoxcountyil.gov
Knox County, IL U.S. rank 22 |
|
C |
| 17 |
lasallecountyil.gov
LaSalle County, IL U.S. rank 22 |
|
C |
| 17 |
lawrencecounty.illinois.gov
Lawrence County, IL U.S. rank 22 |
|
C |
| 17 |
sangamonil.gov
Sangamon County, IL U.S. rank 22 |
|
C |
| 18 |
bondcountyil.gov
Bond County, IL U.S. rank 23 |
|
C |
| 18 |
k3county.net
Kankakee County, IL U.S. rank 23 |
|
C |
| 18 |
oglecountyil.gov
Ogle County, IL U.S. rank 23 |
|
C |
| 18 |
pikecountyil.org
Pike County, IL U.S. rank 23 |
|
C |
| 18 |
putnamil.gov
Putnam County, IL U.S. rank 23 |
|
C |
| 18 |
whitesidecountyil.gov
Whiteside County, IL U.S. rank 23 |
|
C |
| 18 |
willcounty.gov
Will County, IL U.S. rank 23 |
|
C |
| 18 |
woodford-county.org
Woodford County, IL U.S. rank 23 |
|
C |
| 19 |
co.cass.il.us
Cass County, IL U.S. rank 24 |
|
C |
| 19 |
champaigncountyil.gov
Champaign County, IL U.S. rank 24 |
|
C |
| 19 |
jeffersoncounty.illinois.gov
Jefferson County, IL U.S. rank 24 |
|
C |
| 19 |
mercercountyil.org
Mercer County, IL U.S. rank 24 |
|
C |
| 20 |
boonecountyil.gov
Boone County, IL U.S. rank 25 |
|
C |
| 20 |
cumberlandcoil.gov
Cumberland County, IL U.S. rank 25 |
|
C |
| 20 |
montgomerycountyil.gov
Montgomery County, IL U.S. rank 25 |
|
C |
| 21 |
livingstoncountyil.gov
Livingston County, IL U.S. rank 26 |
|
C |
| 21 |
madisoncountyil.gov
Madison County, IL U.S. rank 26 |
|
C |
| 21 |
morgancounty-il.com
Morgan County, IL U.S. rank 26 |
|
C |
| 21 |
stephensoncountyil.gov
Stephenson County, IL U.S. rank 26 |
|
C |
| 22 |
franklincountyil.gov
Franklin County, IL U.S. rank 27 |
|
C |
| 22 |
piatt.gov
Piatt County, IL U.S. rank 27 |
|
C |
| 22 |
co.st-clair.il.us
Saint Clair County, IL U.S. rank 27 |
|
C |
| 23 |
douglascountyil.gov
Douglas County, IL U.S. rank 29 |
|
D |
| 23 |
logancountyil.gov
Logan County, IL U.S. rank 29 |
|
D |
| 24 |
clintonco.illinois.gov
Clinton County, IL U.S. rank 30 |
|
D |
| 25 |
washingtonco.illinois.gov
Washington County, IL U.S. rank 31 |
|
D |
| 26 |
menardcountyil.gov
Menard County, IL U.S. rank 33 |
|
D |
| 27 |
clarkcountyil.org
Clark County, IL U.S. rank 34 |
|
D |
| 28 |
mcg.mcdonough.il.us
McDonough County, IL U.S. rank 38 |
|
F |
|
adamscountyil.gov
Adams County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 | - | |
|
christiancountyil.gov
Christian County, IL |
Not fully scanned, so not graded. We couldn't scan your site because it showed our bot a captcha or browser check instead of the page. Status 996 | - | |
|
claycountyillinois.org
Clay County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 | - | |
|
dekalbcounty.org
DeKalb County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 999 | - | |
|
hancockcounty-il.gov
Hancock County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 | - | |
|
kendallcountyil.gov
Kendall County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 | - | |
|
mchenrycountyil.gov
McHenry County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 | - | |
|
monroecountyil.gov
Monroe County, IL |
Not fully scanned, so not graded. We couldn't scan your site because it showed our bot a captcha or browser check instead of the page. Status 996 | - | |
|
perrycountyil.gov
Perry County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 999 | - | |
|
unioncountyil.gov
Union County, IL |
Not fully scanned, so not graded. We couldn't scan your site because it showed our bot a captcha or browser check instead of the page. Status 996 | - | |
|
williamsoncountyil.gov
Williamson County, IL |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 999 | - |
About this data
ScanGov scans the homepage of each county site on our county list in Illinois. Scores come from the checks in the ScanGov standards. Sites were scanned between 9/28/2026 and 11/7/2026. Each site's report shows its own scan date. A site counts as fully scanned when its homepage loaded and sent us its page content. Averages, grade shares, failure rates, and ranks use fully scanned sites only. We could not fully scan 11 sites. They did not respond, blocked the scanner, or sent no page content. They appear in the table without grades, with their scan status, and are left out of every figure. Grades follow the ScanGov grade scale. Rank follows the ScanGov ranking method. The full dataset, with every county's raw results, is in the ScanGov data repository.