WHAT IS THE VOTER REGISTRATION GAP?

In Missouri, 43% 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

43% of 18-year-olds are registered to vote as of Jul 2, 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 Aug 11, 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 Jul 2, 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 County81%89%16818,065
Audrain County48%76%27724,548
Barry County43%83%41635,033
Barton County70%> 90%10111,690
Bates County48%88%19116,186
Benton County54%83%15720,151
Boone County19%86%5,115188,043
Buchanan County37%79%1,16483,568
Butler County35%79%52242,020
Callaway County32%84%69444,741
Camden County71%90%39543,667
Cape Girardeau County31%86%1,57382,735
Cass County59%> 90%1,201110,773
Cedar County81%83%10114,615
Christian County75%> 90%95792,915
Clay County58%87%2,791258,122
Clinton County55%> 90%22921,414
Cole County48%89%98577,032
Cooper County59%86%15516,824
Crawford County70%85%22022,797
Dallas County53%85%16717,551
Dent County71%83%11514,539
Douglas County79%> 90%10611,965
Dunklin County53%76%28827,493
Franklin County65%88%1,028105,950
Gasconade County53%86%15414,746
Greene County36%85%4,609303,375
Henry County47%86%22722,328
Howard County23%89%28810,147
Howell County57%84%44240,383
Jackson County38%83%8,074719,976
Jasper County50%81%1,624124,357
Jefferson County58%89%2,241229,458
Johnson County21%> 90%1,29154,732
Laclede County39%90%44636,390
Lafayette County60%86%35933,115
Lawrence County49%86%48038,593
Lewis County27%88%2369,924
Lincoln County55%> 90%67463,057
Linn County49%84%13311,852
Livingston County65%86%15014,364
McDonald County50%78%25623,701
Macon County71%85%16815,163
Madison County52%86%13712,729
Marion County48%88%35528,457
Miller County78%> 90%29125,269
Moniteau County65%83%16115,262
Montgomery County57%87%11611,426
Morgan County50%79%19621,717
New Madrid County69%84%13715,731
Newton County63%85%73060,118
Nodaway County12%87%93020,774
Osage County42%> 90%23913,402
Ozark County55%89%1038,873
Pemiscot County35%80%22314,958
Perry County77%89%20718,976
Pettis County54%80%56643,397
Phelps County25%84%1,03345,194
Pike County61%82%12217,711
Platte County66%89%1,136110,371
Polk County41%87%49132,444
Pulaski County8%90%2,72553,894
Ralls County41%> 90%15910,428
Randolph County61%82%24224,365
Ray County58%87%21023,145
Ripley County66%> 90%11410,708
St. Charles County61%90%4,687414,535
St. Clair County44%85%1109,587
Ste. Genevieve County59%90%18818,571
St. Francois County62%82%75266,999
St. Louis County44%85%12,108995,569
Saline County18%80%63723,231
Scott County45%84%43437,933
Stoddard County61%80%27428,470
Stone County55%88%25332,048
Sullivan County28%74%1145,857
Taney County40%84%81856,529
Texas County72%84%24125,161
Vernon County50%78%29819,687
Warren County59%> 90%38637,177
Washington County65%81%23523,470
Wayne County61%> 90%10910,862
Webster County49%> 90%48840,500
Wright County58%89%22118,965
St. Louis city24%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 Aug 11, 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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