Showing South Dakota county sites. All U.S. county sites
C 78
Average security score of 50 fully scanned South Dakota county sites
16th
of 49 states, ranked by average security score
50 of 54
Sites fully scanned. We couldn't fully scan 4, so they're listed without grades
B 83
U.S. county average security score, 2467 fully scanned sites
South Dakota's state site, sd.gov, ranks 25th of 51 state sites with a D. State rankings.
How South Dakota county security scores are distributed
Smoothed distribution of the 50 fully scanned South Dakota county sites, score 0 to 100. Height shows how many sites score near each value.
Distribution of 50 scores. The data table lists counts by score range.
- South Dakota 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 | 0 |
| 60 to 69 | 8 |
| 70 to 79 | 25 |
| 80 to 89 | 13 |
| 90 to 100 | 4 |
South Dakota 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.
- 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 54 sites on our list could not be matched to a county boundary and appear only in the table.
South Dakota counties by security grade, compared with all U.S. counties
Share of fully scanned sites in each grade band. South Dakota: 50 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) |
|---|---|---|---|
| South Dakota | 8% (4) | 76% (38) | 16% (8) |
| All U.S. counties | 21% (530) | 67% (1,642) | 12% (295) |
Top 3 South Dakota county sites by security score
#1 in South Dakota · U.S. rank 1
Brookings County, SD
A 100 security
- Accessibility B
- Botability B
- Security A
- Usability F
- Readability F
#1 in South Dakota · U.S. rank 1
Codington County, SD
A 100 security
- Accessibility B
- Botability B
- Security A
- Usability F
- Readability A
#1 in South Dakota · U.S. rank 1
Grant County, SD
A 100 security
- Accessibility A
- Botability C
- Security A
- Usability C
- Readability F
What each check means
- X-Content-Type-Options. The site tells browsers not to guess the type of files it serves. Browsers might run dangerous files by mistake.
- 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.
- Errors in the console. The page loads without JavaScript or network errors. Site may have hidden bugs that break features.
- Hypertext Transfer Protocol Secure (HTTPS). The site uses HTTPS to encrypt data between the server and users. Hackers can see and steal personal information.
- Security.txt. The site has a security.txt file so researchers know how to report issues. Security researchers cannot report problems to you.
All South Dakota county sites by security score
| Rank | Site | Checks passed | Grade |
|---|---|---|---|
| 1 |
brookingscountysd.gov
Brookings County, SD U.S. rank 1 |
8 of 8 checks pass | A |
| 1 |
codington.sdcounty.gov
Codington County, SD U.S. rank 1 |
8 of 8 checks pass | A |
| 1 |
grantcounty.sd.gov
Grant County, SD U.S. rank 1 |
8 of 8 checks pass | A |
| 1 |
lincolncountysd.gov
Lincoln County, SD U.S. rank 1 |
8 of 8 checks pass | A |
| 2 |
beadlesd.org
Beadle County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
brulecounty.gov
Brule County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
charlesmixcounty.gov
Charles Mix County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
corsoncountysd.gov
Corson County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
deuelcountysd.com
Deuel County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
fallrivercountysd.gov
Fall River County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
handcountysd.gov
Hand County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
hansoncountysd.gov
Hanson County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
mcpherson.sdcounty.gov
McPherson County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
miner.sdcounty.gov
Miner County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
oglalalakotacountysd.gov
Oglala Lakota County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
robertscosd.gov
Roberts County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 2 |
unioncountysd.gov
Union County, SD U.S. rank 3 |
7 of 8 checks pass | B |
| 3 |
brown.sd.us
Brown County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
buffalo.sdcounties.org
Buffalo County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
buttesd.gov
Butte County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
clark.sdcounties.org
Clark County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
claycountysd.org
Clay County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
custercountysd.com
Custer County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
davisoncounty.org
Davison County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
day.sdcounties.org
Day County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
dewey.sdcounties.org
Dewey County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
douglas.sdcounties.org
Douglas County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
edmunds.sdcounties.org
Edmunds County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
gregory.sdcounty.gov
Gregory County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
hutchinsoncountysd.gov
Hutchinson County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
lake.sd.gov
Lake County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
lawrence.sd.us
Lawrence County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
marshall.sdcounties.org
Marshall County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
mccookcountysd.gov
McCook County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
mellette.sdcounty.gov
Mellette County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
moodycounty.net
Moody County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
perkinscounty.org
Perkins County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
spinkcounty-sd.org
Spink County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
stanleycountysd.gov
Stanley County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
turner.sdcounties.org
Turner County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 3 |
walworthco.org
Walworth County, SD U.S. rank 6 |
6 of 8 checks pass | C |
| 4 |
lymancounty.org
Lyman County, SD U.S. rank 7 |
5 of 7 checks pass | C |
| 5 |
hamlinco.us
Hamlin County, SD U.S. rank 9 |
5 of 8 checks pass | D |
| 5 |
hughescounty.org
Hughes County, SD U.S. rank 9 |
5 of 8 checks pass | D |
| 5 |
jerauldcountysd.com
Jerauld County, SD U.S. rank 9 |
5 of 8 checks pass | D |
| 5 |
meadecounty.org
Meade County, SD U.S. rank 9 |
5 of 8 checks pass | D |
| 5 |
pennco.org
Pennington County, SD U.S. rank 9 |
5 of 8 checks pass | D |
| 5 |
trippcounty.us
Tripp County, SD U.S. rank 9 |
5 of 8 checks pass | D |
| 5 |
co.yankton.sd.us
Yankton County, SD U.S. rank 9 |
5 of 8 checks pass | D |
| 5 |
ziebachcounty.org
Ziebach County, SD U.S. rank 9 |
5 of 8 checks pass | D |
|
hardingsd.net
Harding County, SD |
Not fully scanned, so not graded. We couldn't fully scan your site because it responded without any page content. Status 995 | - | |
|
mccookcountysd.com
McCook County, SD |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 408 | - | |
|
minnehahacounty.gov
Minnehaha County, SD |
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 | - | |
|
sully.sdcounty.gov
Sully County, SD |
Not fully scanned, so not graded. We weren't able to fully scan your site. Status 999 | - |
About security
Secure your site and protect users with proper security practices.
Why it's important
Strong defenses prevent hackers from stealing personal information and other confidential data.
Risks
- Hackers can steal private information from your site.
Guidance
What we use to grade security:
- CISA Website Security
- 21st Century Integrated Digital Experience Act (IDEA)
- CISA Cybersecurity Performance Goals
- RFC 9116
- OWASP Top 10
- U.S. Federal Website Standards
Standards
- Content security policy (CSP)
- HTTP Strict Transport Security (HSTS)
- security.txt
- X-Content-Type-Options
- Errors in the console
- Clickjacking mitigation
- Paste preventing inputs
- Hypertext Transfer Protocol Secure (HTTPS)
- Sponsored top-level domain (sTLD)
Grades/scores
ScanGov
About this ranking
About this data
ScanGov scans the homepage of each county site on our county list in South Dakota. Scores come from the checks in the ScanGov standards. Sites were scanned between 9/28/2026 and 11/1/2026. 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 4 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.