California county websites: readability rankings

Readability scores, grades, and the most common failures for 57 California county government websites, from ScanGov homepage scans.

  • Sites: 57
  • Last scan: 10/9/2026

Showing California county sites. All U.S. county sites

D 65

Average readability score of 39 fully scanned California county sites

12th

of 48 states, ranked by average readability score

39 of 57

Sites fully scanned. We couldn't fully scan 18, so they're listed without grades

D 61

U.S. county average readability score, 2421 fully scanned sites

California's state site, ca.gov, ranks 1st of 51 state sites with an A. State rankings.

How California county readability scores are distributed

Smoothed distribution of the 39 fully scanned California county sites, score 0 to 100. Height shows how many sites score near each value.

  • California average
  • U.S. county average
View the data table
Score rangeSites
0 to 913
10 to 190
20 to 290
30 to 390
40 to 490
50 to 590
60 to 690
70 to 790
80 to 890
90 to 10024

California counties by readability 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.

San Benito County, CA: not fully scanned, so not graded (status 403) Shasta County, CA: not fully scanned, so not graded (status 996) Sierra County, CA: grade A, readability score 100 Fresno County, CA: grade A, readability score 100 Amador County, CA: not fully scanned, so not graded (status 994) El Dorado County, CA: grade A, readability score 100 Monterey County, CA: not fully scanned, so not graded (status 403) San Bernardino County, CA: grade A, readability score 100 Tehama County, CA: grade F, readability score 0 Nevada County, CA: grade A, readability score 100 Tuolumne County, CA: not fully scanned, so not graded (status 994) Santa Barbara County, CA: grade A, readability score 100 Trinity County, CA: grade A, readability score 100 Stanislaus County, CA: grade -, readability score Colusa County, CA: not fully scanned, so not graded (status 996) Alpine County, CA: grade A, readability score 100 Siskiyou County, CA: grade A, readability score 100 Del Norte County, CA: grade A, readability score 100 Inyo County, CA: grade A, readability score 100 San Joaquin County, CA: grade F, readability score 0 Imperial County, CA: grade F, readability score 0 Calaveras County, CA: grade F, readability score 0 Butte County, CA: grade F, readability score 0 Madera County, CA: not fully scanned, so not graded (status 403) Ventura County, CA: grade -, readability score Orange County, CA: grade A, readability score 100 Kern County, CA: not fully scanned, so not graded (status 403) Contra Costa County, CA: grade A, readability score 100 Kings County, CA: not fully scanned, so not graded (status 403) Mendocino County, CA: not fully scanned, so not graded (status 403) Sonoma County: not scanned Yuba County, CA: grade A, readability score 100 Merced County, CA: grade A, readability score 100 Tulare County: not scanned Sacramento County, CA: grade A, readability score 100 County of Solano, CA: grade F, readability score 0 San Francisco, CA: grade A, readability score 100 Mariposa County, CA: grade F, readability score 0 Marin County, CA: not fully scanned, so not graded (status 996) Sutter County, CA: not fully scanned, so not graded (status 403) Lassen County, CA: grade F, readability score 0 Riverside County, CA: grade F, readability score 0 Plumas County, CA: grade A, readability score 100 Santa Clara County: not scanned Placer County, CA: grade A, readability score 100 San Luis Obispo County, CA: grade F, readability score 0 Mono County, CA: grade A, readability score 100 County of San Diego, CA: not fully scanned, so not graded (status 999) Napa County, CA: grade A, readability score 100 Alameda County, CA: grade F, readability score 0 Yolo County, CA: not fully scanned, so not graded (status 403) Lake County, CA: grade A, readability score 100 Los Angeles County, CA: grade A, readability score 100 Glenn County, CA: not fully scanned, so not graded (status 996) Santa Cruz County, CA: grade F, readability score 0 Humboldt County, CA: grade F, readability score 0 Modoc County, CA: grade A, readability score 100
  • A (90 to 100)
  • B to C (70 to 89)
  • D to F (below 70)
  • Not fully scanned
  • No site on our list

3 of the 57 sites on our list could not be matched to a county boundary and appear only in the table.

California counties by readability grade, compared with all U.S. counties

Share of fully scanned sites in each grade band. California: 39 sites. U.S.: 2421 sites.

  1. California
  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)
California62% (24)0% (0)33% (13)
All U.S. counties58% (1,411)0% (0)37% (899)

Top 3 California county sites by readability score

#1 in California · U.S. rank 1

Alpine County, CA

A 100 readability

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

#1 in California · U.S. rank 1

Contra Costa County, CA

A 100 readability

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

#1 in California · U.S. rank 1

Del Norte County, CA

A 100 readability

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

Most common readability failures among California county sites

Share of the 39 fully scanned California 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. Reading level33%
View the data table
CheckShare failingSites failing
Reading level33%13

What each check means

  • Reading level. Page text reads at or below a 7th grade level so most users can understand it. Users struggle to understand your content.

All California county sites by readability score

Rank Site Checks passed Grade
1 alpinecountyca.gov
Alpine County, CA U.S. rank 1 		1 of 1 checks pass A
1 contracosta.ca.gov
Contra Costa County, CA U.S. rank 1 		1 of 1 checks pass A
1 co.del-norte.ca.us
Del Norte County, CA U.S. rank 1 		1 of 1 checks pass A
1 eldoradocounty.ca.gov
El Dorado County, CA U.S. rank 1 		1 of 1 checks pass A
1 fresnocountyca.gov
Fresno County, CA U.S. rank 1 		1 of 1 checks pass A
1 inyocounty.us
Inyo County, CA U.S. rank 1 		1 of 1 checks pass A
1 lakecountyca.gov
Lake County, CA U.S. rank 1 		1 of 1 checks pass A
1 lacounty.gov
Los Angeles County, CA U.S. rank 1 		1 of 1 checks pass A
1 countyofmerced.com
Merced County, CA U.S. rank 1 		1 of 1 checks pass A
1 countyofmodoc.gov
Modoc County, CA U.S. rank 1 		1 of 1 checks pass A
1 monocounty.ca.gov
Mono County, CA U.S. rank 1 		1 of 1 checks pass A
1 napacounty.gov
Napa County, CA U.S. rank 1 		1 of 1 checks pass A
1 nevadacountyca.gov
Nevada County, CA U.S. rank 1 		1 of 1 checks pass A
1 ocgov.com
Orange County, CA U.S. rank 1 		1 of 1 checks pass A
1 placer.ca.gov
Placer County, CA U.S. rank 1 		1 of 1 checks pass A
1 plumascounty.us
Plumas County, CA U.S. rank 1 		1 of 1 checks pass A
1 saccounty.gov
Sacramento County, CA U.S. rank 1 		1 of 1 checks pass A
1 main.sbcounty.gov
San Bernardino County, CA U.S. rank 1 		1 of 1 checks pass A
1 sf.gov
San Francisco, CA U.S. rank 1 		1 of 1 checks pass A
1 countyofsb.org
Santa Barbara County, CA U.S. rank 1 		1 of 1 checks pass A
1 sierracounty.ca.gov
Sierra County, CA U.S. rank 1 		1 of 1 checks pass A
1 siskiyoucounty.gov
Siskiyou County, CA U.S. rank 1 		1 of 1 checks pass A
1 trinitycounty.org
Trinity County, CA U.S. rank 1 		1 of 1 checks pass A
1 yuba.gov
Yuba County, CA U.S. rank 1 		1 of 1 checks pass A
4 acgov.org
Alameda County, CA U.S. rank 103 		0 of 1 checks pass F
2 buttecounty.net
Butte County, CA U.S. rank 3 		0 of 1 checks pass F
2 calaverasgov.us
Calaveras County, CA U.S. rank 3 		0 of 1 checks pass F
6 solanocounty.gov
County of Solano, CA U.S. rank 181 		0 of 1 checks pass F
2 humboldtgov.org
Humboldt County, CA U.S. rank 3 		0 of 1 checks pass F
2 imperialcounty.org
Imperial County, CA U.S. rank 87 		0 of 1 checks pass F
2 lassencounty.gov
Lassen County, CA U.S. rank 27 		0 of 1 checks pass F
2 mariposacounty.gov
Mariposa County, CA U.S. rank 29 		0 of 1 checks pass F
2 rivco.gov
Riverside County, CA U.S. rank 13 		0 of 1 checks pass F
2 sjgov.org
San Joaquin County, CA U.S. rank 35 		0 of 1 checks pass F
4 slocounty.ca.gov
San Luis Obispo County, CA U.S. rank 99 		0 of 1 checks pass F
4 santacruzcountyca.gov
Santa Cruz County, CA U.S. rank 139 		0 of 1 checks pass F
6 tehama.gov
Tehama County, CA U.S. rank 173 		0 of 1 checks pass F
amadorgov.org
Amador County, CA 		Not fully scanned, so not graded. We couldn't scan your site because the page never finished loading in our browser. Status 994 -
countyofcolusaca.gov
Colusa County, CA 		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 -
sandiegocounty.gov
County of San Diego, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 999 -
sdparks.org
County of San Diego, CA 		Not fully scanned, so not graded. We couldn't scan your site because the page never finished loading in our browser. Status 994 -
sddac.com
County of San Diego, CA 		Not fully scanned, so not graded. We couldn't scan your site because the page never finished loading in our browser. Status 994 -
countyofglenn.net
Glenn County, CA 		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 -
kerncounty.com
Kern County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
countyofkingsca.gov
Kings County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
maderacounty.com
Madera County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
parks.marincounty.gov
Marin County Parks, CA 		Not fully scanned, so not graded. We couldn't fully scan your site because it responded without any page content. Status 995 -
marincounty.gov
Marin County, CA 		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 -
mendocinocounty.gov
Mendocino County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
countyofmonterey.gov
Monterey County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
sanbenitocountyca.gov
San Benito County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
shastacounty.gov
Shasta County, CA 		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 -
3 stancounty.com
Stanislaus County, CA U.S. rank 88 		Not fully scanned, so not graded. We were able to fully scan your site. Status 200 -
suttercounty.org
Sutter County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -
tuolumnecounty.ca.gov
Tuolumne County, CA 		Not fully scanned, so not graded. We couldn't scan your site because the page never finished loading in our browser. Status 994 -
5 venturacounty.gov
Ventura County, CA U.S. rank 162 		Not fully scanned, so not graded. We were able to fully scan your site. Status 200 -
yolocounty.gov
Yolo County, CA 		Not fully scanned, so not graded. We weren't able to fully scan your site. Status 403 -

About this data

ScanGov scans the homepage of each county government site on our county list in California. Scores come from the checks listed on standards.scangov.org. Sites were scanned between 7/25/2026 and 10/3/2026; each site's report shows its own scan date. A site counts as fully scanned when its homepage returned successfully and sent the scanner its page content. Averages, grade shares, failure rates, and ranks use fully scanned sites only. We weren't able to fully scan 18 sites because they did not respond, blocked the scanner, or returned no page content. They appear in the table without grades, each with its scan status, and are left out of every figure. Grades follow the ScanGov grade scale, and rank follows the ScanGov ranking method. The full dataset, including every county's raw results, is published in the ScanGov data repository.