PlainCities

Counties · Missouri

Counties of Missouri

Missouri has 115 counties. St. Louis County is the largest with 990,911 residents in 2025. 77 of the 115 gained residents between 2020 and 2025 by the Census Bureau's estimates.

What counties are in Missouri?

Sorted by the 2025 population estimate; sort by any column.

Counties of Missouri: 2025 estimate, change since 2020, ACS 2020-2024 5-year estimates
St. Louis County990,911−1.4%99236$82,936$276,800
Jackson County732,994+2.2%21227$68,577$230,500
St. Charles County426,499+5.2%1885$104,692$320,800
Greene County309,286+3.5%978$61,479$221,300
St. Louis city278,144−7.7%1104$56,160$197,500
Clay County265,032+4.6%2655$88,468$275,600
Jefferson County233,132+2.9%2649$82,851$237,200
Boone County191,746+4.4%1240$72,758$272,800
Jasper County127,428+3.8%2229$60,694$166,900
Cass County115,859+7.5%2324$87,535$292,400
Platte County114,400+7.2%2027$96,227$345,100
Franklin County108,090+3.3%1728$73,165$227,600
Christian County96,725+8.9%1119$83,437$274,900
Cape Girardeau County83,999+2.8%1519$68,464$220,700
Buchanan County83,540−1.5%926$62,158$166,300
Cole County77,908+0.8%918$74,876$229,600
St. Francois County67,809+1.3%1519$57,477$169,300
Lincoln County66,676+11.9%1313$89,278$244,300
Newton County62,263+6.1%2013$66,301$190,700
Taney County57,001+1.7%1018$56,497$218,800
Johnson County56,670+4.9%914$67,272$235,700
Pulaski County54,442+0.9%613$64,466$189,800
Callaway County45,765+3.3%811$74,176$201,600
Phelps County45,247+1.4%512$58,396$206,500
Pettis County44,254+2.9%811$60,430$166,300
Camden County44,047+3.1%1319$66,387$305,400
Webster County43,054+10.1%78$71,155$228,800
Butler County41,904−0.5%712$49,089$145,100
Howell County40,798+2.6%610$50,993$173,000
Lawrence County39,401+3.7%1210$61,215$175,100
Warren County39,016+9.8%89$81,209$260,400
Scott County37,975−0.2%1711$62,782$154,400
Laclede County36,943+2.5%79$53,282$168,400
Barry County36,200+4.8%1510$58,346$187,800
Polk County33,604+6.6%88$59,647$205,800
Lafayette County33,531+1.6%178$80,612$216,500
Stone County32,503+4.6%1212$63,520$249,000
Marion County28,525−0.0%48$62,903$162,000
Stoddard County28,284−1.4%188$57,957$143,300
Dunklin County26,855−5.1%2110$47,849$97,600
Texas County25,994+6.2%248$50,036$146,700
Miller County25,817+4.4%119$56,736$192,600
Adair County25,684+1.5%78$61,536$165,700
Audrain County24,528−1.7%97$59,448$143,100
Randolph County24,513−0.8%86$53,033$159,300
McDonald County23,992+3.0%96$52,375$154,700
Washington County23,810+1.2%56$56,043$129,400
Ray County23,398+1.0%156$74,573$198,800
Saline County23,265−0.3%128$57,931$150,500
Crawford County22,929−0.5%88$57,629$172,600
Henry County22,671+3.3%306$57,926$160,600
Morgan County22,418+6.7%78$53,412$194,400
Clinton County21,661+2.3%105$70,627$226,800
Benton County20,536+5.9%68$52,567$177,900
Nodaway County20,174−5.0%326$59,315$177,500
Vernon County19,946+1.3%326$52,230$158,800
Wright County19,671+8.2%54$47,909$160,100
Perry County19,093+0.7%85$62,981$188,200
Ste. Genevieve County18,689+1.1%75$66,339$222,200
Andrew County18,241+0.6%85$75,625$215,400
Dallas County18,025+5.6%44$53,464$190,300
Pike County17,955+2.1%125$54,989$146,000
Cooper County17,136+0.2%85$70,625$203,500
Bates County16,512+2.9%354$60,733$170,800
Moniteau County15,428−0.3%74$65,715$181,900
Macon County15,190−0.1%105$62,357$149,100
New Madrid County15,086−8.2%156$51,881$111,800
Cedar County14,888+4.9%44$48,181$168,100
Gasconade County14,784−0.1%65$64,232$179,900
Livingston County14,708+1.0%205$63,627$147,700
Dent County14,584+1.1%24$56,312$167,500
Pemiscot County14,465−7.6%146$40,089$97,000
Osage County13,611+2.6%84$76,681$223,300
Madison County12,858+1.9%64$54,434$159,000
Douglas County12,342+6.6%13$45,985$168,200
Mississippi County12,003−4.5%94$48,160$109,000
Linn County11,815−0.5%235$61,635$123,300
Barton County11,795+1.3%233$51,635$136,500
Montgomery County11,590+2.4%124$65,500$178,700
Wayne County10,782−1.8%44$47,226$107,400
Ripley County10,717+0.4%44$42,037$119,600
Bollinger County10,646+0.7%43$63,814$179,800
Ralls County10,444+0.9%83$65,388$168,200
Howard County10,180+0.3%53$65,938$159,400
St. Clair County9,976+7.4%73$53,043$157,100
Lewis County9,879−1.6%74$59,934$130,200
DeKalb County9,795−11.2%173$69,826$169,200
Grundy County9,744−0.7%214$51,975$112,500
Iron County9,318−2.3%64$48,850$119,300
Ozark County9,172+7.2%63$44,163$168,600
Hickory County9,044+9.2%54$39,390$176,100
Caldwell County9,012+2.2%203$64,806$166,500
Monroe County8,959+3.4%83$54,516$149,300
Oregon County8,709+0.9%43$43,069$113,300
Daviess County8,558+1.4%252$63,984$161,800
Carroll County8,417−0.9%253$62,154$117,500
Maries County8,397−0.4%33$59,455$219,100
Harrison County8,281+1.5%283$54,367$109,500
Dade County7,804+3.1%62$53,750$170,600
Chariton County7,377−0.4%263$71,520$160,900
Shannon County7,285+3.6%52$55,222$157,500
Clark County6,475−2.5%83$51,781$130,700
Gentry County6,384+3.7%142$55,848$134,000
Reynolds County5,992−1.7%32$45,028$151,700
Shelby County5,870−3.8%63$51,594$99,900
Sullivan County5,738−4.3%103$56,964$115,600
Carter County5,418+4.2%52$50,000$159,400
Atchison County5,175−2.5%72$58,750$106,800
Scotland County4,796+1.9%52$68,913$158,800
Putnam County4,546−2.8%162$63,510$119,500
Holt County4,200−0.6%93$61,187$138,200
Schuyler County4,140+2.8%52$61,205$137,500
Knox County3,728−0.3%72$57,788$101,400
Mercer County3,404−3.8%132$62,679$104,900
Worth County1,914−2.8%61$47,847$96,600

Source: PEP Vintage 2025 (CO-EST2025); American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Census population estimates

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections