Fastest Growing Counties in Missouri (2026)

County
Rank
Change (2020) ↓
2026 Pop.
2020 Pop.
Lincoln County114.02%68,25059,857
Warren County211.37%39,80435,740
Christian County311.09%99,19789,294
Morgan County410.81%23,27121,001
Webster County510.65%43,16139,008
Cedar County610.15%15,65714,214
Cass County79.31%118,229108,162
Ozark County88.91%9,2788,519
Wright County98.54%19,76918,214
Platte County107.66%115,397107,190
St. Clair County117.62%10,0589,346
Newton County127.21%62,93158,699
St. Charles County137.1%435,262406,423
Douglas County147.09%12,42211,600
Hickory County156.87%8,8688,298
Benton County166.68%20,72219,425
Texas County176.62%25,93324,323
Boone County186.59%196,186184,050
Johnson County196.27%57,42654,039
Polk County206.19%33,57431,616
Clay County216.16%269,810254,145
Monroe County225.92%9,2088,693
Livingston County235.68%14,78413,990
Dallas County245.33%18,04517,132
Cooper County255.21%17,51416,647
Jasper County265.13%129,203122,896
Adair County274.93%26,51825,272
Barry County284.9%36,23434,542
Greene County294.76%313,566299,332
Lawrence County304.47%39,69537,998
Miller County314.42%25,87224,778
Stone County324.25%32,53031,205
Bates County334.22%16,73016,053
Carter County344.11%5,4195,205
Shannon County354.01%7,3177,035
Franklin County363.83%108,880104,867
Clinton County373.8%22,02521,218
Henry County383.77%22,81121,982
Madison County393.59%13,07812,625
Cape Girardeau County403.58%84,75481,824
Pike County413.54%18,02917,413
Montgomery County423.43%11,67311,286
Jackson County433.32%741,520717,662
Camden County443.27%44,20742,807
Dent County453.24%14,85514,389
Phelps County463.17%45,98244,568
Callaway County473.15%45,74244,346
Lafayette County483.01%34,04533,050
Jefferson County492.82%233,354226,947
St. Francois County502.82%68,32166,446
McDonald County512.79%23,92823,278
Pettis County522.76%44,19143,004
Howell County532.68%40,87239,806
Caldwell County542.57%9,0488,821
Laclede County552.27%36,86636,046
Perry County562.26%19,40018,971
Gentry County572.22%6,2726,136
Maries County582.19%8,6368,451
Linn County592.17%12,11411,857
Cole County602.11%78,23976,624
Bollinger County611.92%10,75810,555
Osage County621.67%13,47613,255
Ralls County631.36%10,49510,354
Schuyler County641.27%4,0614,010
Moniteau County651.16%15,39215,216
Taney County661.05%56,65256,064
Washington County670.99%23,66523,432
Daviess County680.97%8,5158,433
Saline County690.91%23,55123,339
Vernon County700.76%19,82519,675
Howard County710.6%10,21810,157
Oregon County720.56%8,6598,611
Marion County730.55%28,65128,493
Carroll County740.52%8,5088,464
Ray County750.46%23,24123,135
Barton County760.36%11,66511,623
Pulaski County770.36%54,23454,039
Knox County780.24%3,7483,739
Crawford County790.03%23,04223,036
Scott County800.01%38,02538,022
Holt County810%4,1914,191
Chariton County82-0.07%7,3857,390
Macon County83-0.09%15,18515,199
Scotland County84-0.15%4,6984,705
Buchanan County85-0.18%84,32084,472
Andrew County86-0.26%18,05518,102
Stoddard County87-0.28%28,57028,650
Harrison County88-0.38%8,1268,157
St. Louis County89-0.63%997,0371,003,376
Ste. Genevieve County90-0.65%18,35818,478
Grundy County91-0.75%9,6849,757
Butler County92-1.05%41,62242,063
Wayne County93-1.14%10,81010,935
Clark County94-1.28%6,5736,658
Ripley County95-1.34%10,52710,670
Lewis County96-1.62%9,87610,039
Iron County97-1.69%9,3529,513
Gasconade County98-1.76%14,50314,763
Randolph County99-1.78%24,02124,457
Dade County100-2.08%7,4287,586
Audrain County101-2.23%24,22824,781
Atchison County102-2.26%5,1855,305
Shelby County103-2.9%5,9186,095
Reynolds County104-3.75%5,8516,079
Nodaway County105-4.17%20,12320,999
Mercer County106-4.38%3,3583,512
Mississippi County107-4.74%11,54612,121
Dunklin County108-4.76%26,87428,216
Sullivan County109-6.83%5,5685,976
Putnam County110-7.39%4,3394,685
Worth County111-8.03%1,8101,968
St. Louis city112-8.92%273,541300,315
New Madrid County113-9%14,86016,329
Pemiscot County114-10.94%13,88315,589
DeKalb County115-15.02%9,85411,596

Missouri Counties Growth Overview

Missouri's counties show varied growth patterns from 2020 to 2026. Lincoln County leads with 2.21% annualized growth, followed by Warren County (1.81%) and Christian County (1.77%). The largest counties are St. Louis County (997,037), Jackson County (741,520), and St. Charles County (435,262). Of the 115 counties in Missouri, 81 are growing while 34 have experienced population decline. Overall, counties averaged 0.3% annualized growth, with total population growing by 0.44% annually.

Change (2020)

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