Colorado county websites: security rankings

Security scores, grades, and the most common failures for 63 Colorado county websites, from ScanGov homepage scans.

  • Sites: 63
  • Last scan: 11/7/2026

Showing Colorado county sites. All U.S. county sites

B 83

Average security score of 32 fully scanned Colorado county sites

11th

of 49 states, ranked by average security score

32 of 63

Sites fully scanned. We couldn't fully scan 31, so they're listed without grades

B 83

U.S. county average security score, 2467 fully scanned sites

Colorado's state site, colorado.gov, could not be fully scanned. State rankings.

How Colorado county security scores are distributed

Smoothed distribution of the 32 fully scanned Colorado county sites, score 0 to 100. Height shows how many sites score near each value.

  • Colorado average
  • U.S. county average
View the data table
Score rangeSites
0 to 90
10 to 190
20 to 290
30 to 390
40 to 490
50 to 590
60 to 694
70 to 7912
80 to 898
90 to 1008

Colorado counties by security 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.

Conejos County, CO: not fully scanned, so not graded (status 403) Jackson County, CO: not fully scanned, so not graded (status 403) Archuleta County, CO: grade A, security score 100 Washington County, CO: not fully scanned, so not graded (status 403) Garfield County, CO: grade D, security score 66 Rio Grande County, CO: not fully scanned, so not graded (status 403) Morgan County, CO: not fully scanned, so not graded (status 403) Elbert County, CO: grade B, security score 87 Otero County, CO: not fully scanned, so not graded (status 403) Teller County, CO: grade A, security score 100 Phillips County, CO: not fully scanned, so not graded (status 403) Yuma County, CO: not fully scanned, so not graded (status 404) Pueblo County, CO: grade D, security score 62 Alamosa County, CO: grade B, security score 87 Baca County, CO: grade B, security score 87 Montezuma County: not scanned Arapahoe County, CO: not fully scanned, so not graded (status 998) Mineral County, CO: not fully scanned, so not graded (status 996) Dolores County, CO: not fully scanned, so not graded (status 403) Jefferson County, CO: grade D, security score 66 Delta County, CO: grade A, security score 100 Grand County, CO: grade C, security score 77 Saguache County, CO: not fully scanned, so not graded (status 403) Summit County, CO: grade C, security score 75 Gunnison County, CO: not fully scanned, so not graded (status 995) Costilla County, CO: not fully scanned, so not graded (status 996) Weld County, CO: grade A, security score 100 Las Animas County, CO: not fully scanned, so not graded (status 403) Routt County, CO: grade C, security score 75 Douglas County, CO: not fully scanned, so not graded (status 997) Rio Blanco County, CO: grade D, security score 62 Broomfield, CO: grade B, security score 87 City and County of Denver, CO: grade C, security score 75 Boulder County, CO: grade C, security score 75 Larimer County, CO: not fully scanned, so not graded (status 996) Crowley County, CO: not fully scanned, so not graded (status 403) Custer County, CO: grade A, security score 100 El Paso County, CO: grade C, security score 75 Gilpin County, CO: not fully scanned, so not graded (status 403) Huerfano County, CO: grade C, security score 75 Ouray County, CO: grade B, security score 87 Cheyenne County, CO: grade C, security score 75 Moffat County, CO: not fully scanned, so not graded (status 403) Pitkin County, CO: grade C, security score 75 Prowers County, CO: grade C, security score 75 San Juan County, CO: not fully scanned, so not graded (status 403) La Plata County, CO: grade C, security score 75 Hinsdale County, CO: not fully scanned, so not graded (status 403) Kit Carson County, CO: not fully scanned, so not graded (status 403) San Miguel County, CO: grade A, security score 100 Clear Creek County, CO: grade B, security score 87 Kiowa County, CO: not fully scanned, so not graded (status 403) Park County, CO: grade A, security score 100 Lake County, CO: grade A, security score 100 Lincoln County, CO: not fully scanned, so not graded (status 403) Adams County, CO: grade C, security score 75 Eagle County, CO: not fully scanned, so not graded (status 996) Logan County, CO: not fully scanned, so not graded (status 403) Sedgwick County, CO: not fully scanned, so not graded (status 403) Chaffee County, CO: not fully scanned, so not graded (status 996) Fremont County, CO: grade B, security score 87 Mesa County, CO: grade B, security score 87 Bent County, CO: not fully scanned, so not graded (status 998)
  • 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 63 sites on our list could not be matched to a county boundary and appear only in the table.

Colorado counties by security grade, compared with all U.S. counties

Share of fully scanned sites in each grade band. Colorado: 32 sites. U.S.: 2467 sites.

  1. Colorado
  2. All U.S. counties
  • A (90 to 100)
  • B to C (70 to 89)
  • D to F (below 70)
View the data table
GroupA (90 to 100)B to C (70 to 89)D to F (below 70)
Colorado25% (8)63% (20)13% (4)
All U.S. counties21% (530)67% (1,642)12% (295)

Top 3 Colorado county sites by security score

#1 in Colorado · U.S. rank 1

Archuleta County, CO

A 100 security

  • Accessibility A
  • Botability C
  • Security A
  • Usability C
  • Readability A

#1 in Colorado · U.S. rank 1

Custer County, CO

A 100 security

  • Accessibility C
  • Botability B
  • Security A
  • Usability F
  • Readability F

#1 in Colorado · U.S. rank 1

Delta County, CO

A 100 security

  • Accessibility B
  • Botability B
  • Security A
  • Usability F
  • Readability A

Most common security failures among Colorado county sites

Share of the 32 fully scanned Colorado county sites failing each check. A site can fail more than one check. Each check links to its standard and how to fix it.

  1. Sponsored top-level domain (sTLD)47%
  2. X-Content-Type-Options41%
  3. Errors in the console41%
  4. Security.txt9%
View the data table
CheckShare failingSites failing
Sponsored top-level domain (sTLD)47%15
X-Content-Type-Options41%13
Errors in the console41%13
Security.txt9%3

What each check means

  • Sponsored top-level domain (sTLD). The site uses a government-issued domain (.gov, .edu, or .mil). People cannot tell if your site is real government.
  • X-Content-Type-Options. The site tells browsers not to guess the type of files it serves. Browsers might run dangerous files by mistake.
  • Errors in the console. The page loads without JavaScript or network errors. Site may have hidden bugs that break features.
  • Security.txt. The site has a security.txt file so researchers know how to report issues. Security researchers cannot report problems to you.

All Colorado county sites by security score

Rank Site Checks passed Grade
1 archuletacounty.gov
Archuleta County, CO U.S. rank 1 		8 of 8 checks pass A
1 custercounty-co.gov
Custer County, CO U.S. rank 1 		8 of 8 checks pass A
1 deltacountyco.gov
Delta County, CO U.S. rank 1 		8 of 8 checks pass A
1 lakecountyco.gov
Lake County, CO U.S. rank 1 		8 of 8 checks pass A
1 parkcountyco.gov
Park County, CO U.S. rank 1 		8 of 8 checks pass A
1 sanmiguelcountyco.gov
San Miguel County, CO U.S. rank 1 		8 of 8 checks pass A
1 tellercounty.gov
Teller County, CO U.S. rank 1 		8 of 8 checks pass A
1 weld.gov
Weld County, CO U.S. rank 1 		8 of 8 checks pass A
2 alamosacounty.org
Alamosa County, CO U.S. rank 3 		7 of 8 checks pass B
2 bacacountyco.gov
Baca County, CO U.S. rank 3 		7 of 8 checks pass B
2 broomfield.org
Broomfield, CO U.S. rank 3 		7 of 8 checks pass B
2 clearcreekcounty.us
Clear Creek County, CO U.S. rank 3 		7 of 8 checks pass B
2 elbertcounty-co.gov
Elbert County, CO U.S. rank 3 		7 of 8 checks pass B
2 fremontcountyco.gov
Fremont County, CO U.S. rank 3 		7 of 8 checks pass B
2 mesacounty.us
Mesa County, CO U.S. rank 3 		7 of 8 checks pass B
2 ouraycountyco.gov
Ouray County, CO U.S. rank 3 		7 of 8 checks pass B
3 co.grand.co.us
Grand County, CO U.S. rank 5 		7 of 9 checks pass C
4 adamscountyco.gov
Adams County, CO U.S. rank 6 		6 of 8 checks pass C
4 bouldercounty.gov
Boulder County, CO U.S. rank 6 		6 of 8 checks pass C
4 co.cheyenne.co.us
Cheyenne County, CO U.S. rank 6 		6 of 8 checks pass C
4 denvergov.org
City and County of Denver, CO U.S. rank 6 		6 of 8 checks pass C
4 elpasoco.com
El Paso County, CO U.S. rank 6 		6 of 8 checks pass C
4 huerfano.us
Huerfano County, CO U.S. rank 6 		6 of 8 checks pass C
4 lpcgov.org
La Plata County, CO U.S. rank 6 		6 of 8 checks pass C
4 pitkincounty.com
Pitkin County, CO U.S. rank 6 		6 of 8 checks pass C
4 prowersco.gov
Prowers County, CO U.S. rank 6 		6 of 8 checks pass C
4 co.routt.co.us
Routt County, CO U.S. rank 6 		6 of 8 checks pass C
4 summitcountyco.gov
Summit County, CO U.S. rank 6 		6 of 8 checks pass C
5 garfieldcountyco.gov
Garfield County, CO U.S. rank 8 		6 of 9 checks pass D
5 jeffco.us
Jefferson County, CO U.S. rank 8 		6 of 9 checks pass D
6 county.pueblo.org
Pueblo County, CO U.S. rank 9 		5 of 8 checks pass D
6 rbc.us
Rio Blanco County, CO U.S. rank 9 		5 of 8 checks pass D
arapahoeco.gov
Arapahoe County, CO 		Not fully scanned, so not graded. We didn't scan your site because its robots.txt asked us not to. Status 998 -
bentcounty.net
Bent County, CO 		Not fully scanned, so not graded. We didn't scan your site because its robots.txt asked us not to. Status 998 -
chaffeecounty.org
Chaffee County, CO 		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 -
conejoscounty.colorado.gov
Conejos County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
costillacounty.gov
Costilla County, CO 		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 -
crowleycounty.colorado.gov
Crowley County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
dolocnty.colorado.gov
Dolores County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
douglas.co.us
Douglas County, CO 		Not fully scanned, so not graded. We didn't scan your site because its robots.txt asks crawlers to wait longer than we can. Status 997 -
eaglecounty.us
Eagle County, CO 		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 -
gilpincounty.colorado.gov
Gilpin County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
gunnisoncounty.org
Gunnison County, CO 		Not fully scanned, so not graded. We couldn't fully scan your site because it responded without any page content. Status 995 -
hinsdalecounty.colorado.gov
Hinsdale County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
jacksoncounty.colorado.gov
Jackson County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
kiowacounty.colorado.gov
Kiowa County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
kitcarsoncounty.colorado.gov
Kit Carson County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
larimer.gov
Larimer County, CO 		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 -
lasanimascounty.colorado.gov
Las Animas County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
lincolncounty.colorado.gov
Lincoln County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
logancounty.colorado.gov
Logan County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
mineralcountycolorado.com
Mineral County, CO 		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 -
moffatcounty.colorado.gov
Moffat County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
morgancounty.colorado.gov
Morgan County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
oterocounty.colorado.gov
Otero County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
phillipscounty.colorado.gov
Phillips County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
prowerscounty.net
Prowers County, CO 		Not fully scanned, so not graded. We couldn't scan your site because the page never finished loading in our browser. Status 994 -
riograndecounty.colorado.gov
Rio Grande County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
saguachecounty.colorado.gov
Saguache County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
sanjuancounty.colorado.gov
San Juan County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
sedgwickcounty.colorado.gov
Sedgwick County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
washingtoncounty.colorado.gov
Washington County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
yumacounty.net
Yuma County, CO 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 404 -

About this data

ScanGov scans the homepage of each county site on our county list in Colorado. 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 31 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.

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