WHAT IS THE VOTER REGISTRATION GAP?

In Missouri, 46% of 18-year-olds are registered to vote, compared to 86% of voters 45+

Teens have the power to close the gap.

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National

Missouri Voter Registration Gap

This maps shows the most recent county-level voter registration rates in Missouri, one of a set of 39 states we currently track. Rates are shown for both 18-year-olds and adults ages 45 and older. Click a county to learn more about voter registration in there.

State
County
Age Group
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Missouri

46% of 18-year-olds are registered to vote as of Aug 1, 2026.

85%75%65%55%45%35%LowPop
Voter data from a commercial source compiling official state records and the American Community Survey. Last updated on Sep 8, 2026.
Learn more about this information.
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High school communities can close the gap in Missouri.

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Missouri County Registration Rates

This table shows the voter registration rates in each Missouri county or county-equivalent as of Aug 1, 2026. We omit counties with 18-year-old populations below 100.

See our methods for more details.

18 vs 45+
Adair County13%82%93625,301
Andrew County88%89%16818,065
Audrain County49%76%27724,548
Barry County43%83%41635,033
Barton County73%> 90%10111,690
Bates County53%88%19116,186
Benton County57%84%15720,151
Boone County21%86%5,115188,043
Buchanan County37%79%1,16483,568
Butler County41%80%52242,020
Callaway County34%84%69444,741
Camden County73%89%39543,667
Cape Girardeau County34%86%1,57382,735
Cass County61%> 90%1,201110,773
Cedar County80%84%10114,615
Christian County78%> 90%95792,915
Clay County62%87%2,791258,122
Clinton County59%> 90%22921,414
Cole County49%89%98577,032
Cooper County66%86%15516,824
Crawford County75%86%22022,797
Dallas County58%85%16717,551
Dent County74%83%11514,539
Douglas County81%> 90%10611,965
Dunklin County53%76%28827,493
Franklin County67%89%1,028105,950
Gasconade County57%87%15414,746
Greene County38%85%4,609303,375
Henry County49%86%22722,328
Howard County25%88%28810,147
Howell County59%85%44240,383
Jackson County40%83%8,074719,976
Jasper County50%81%1,624124,357
Jefferson County62%89%2,241229,458
Johnson County23%> 90%1,29154,732
Laclede County42%90%44636,390
Lafayette County62%86%35933,115
Lawrence County51%87%48038,593
Lewis County26%88%2369,924
Lincoln County59%> 90%67463,057
Linn County52%84%13311,852
Livingston County64%86%15014,364
McDonald County51%78%25623,701
Macon County70%85%16815,163
Madison County51%86%13712,729
Marion County50%88%35528,457
Miller County84%> 90%29125,269
Moniteau County65%83%16115,262
Montgomery County60%88%11611,426
Morgan County54%79%19621,717
New Madrid County70%84%13715,731
Newton County65%85%73060,118
Nodaway County13%87%93020,774
Osage County43%> 90%23913,402
Ozark County55%89%1038,873
Pemiscot County38%80%22314,958
Perry County80%89%20718,976
Pettis County58%80%56643,397
Phelps County25%83%1,03345,194
Pike County67%81%12217,711
Platte County68%89%1,136110,371
Polk County42%86%49132,444
Pulaski County8%> 90%2,72553,894
Ralls County43%> 90%15910,428
Randolph County63%82%24224,365
Ray County63%87%21023,145
Ripley County67%> 90%11410,708
St. Charles County65%> 90%4,687414,535
St. Clair County47%85%1109,587
Ste. Genevieve County63%90%18818,571
St. Francois County64%83%75266,999
St. Louis County49%86%12,108995,569
Saline County19%80%63723,231
Scott County48%84%43437,933
Stoddard County63%80%27428,470
Stone County57%88%25332,048
Sullivan County32%74%1145,857
Taney County42%84%81856,529
Texas County76%84%24125,161
Vernon County49%79%29819,687
Warren County63%> 90%38637,177
Washington County68%82%23523,470
Wayne County60%> 90%10910,862
Webster County54%88%48840,500
Wright County64%89%22118,965
St. Louis city27%78%3,364288,512

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About this information

The voter data shown on this page comes from a commercial source that compiles official state records and was last updated on Sep 8, 2026. Population estimates come from the American Community Survey. To learn more, read our research model.

These pages are offered for guidance only and are not intended as legal advice. Please consult state election officials or an attorney if you have questions about any particular situation. We hope you find this useful. To cite our resources and original research, please provide links and/or cite The Civics Center.

If you have a question or noticed a discrepancy, please contact us.

© 2026 The Civics Center

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