Data / Rankings / Population density / Counties in Missouri

Counties in Missouri by population density

St. Louis city had the highest population density of 115 counties in 2024, at 1,754.5 inhabitants per km². Worth County had the lowest, at 2.8 inhabitants per km². The median was 11.9 inhabitants per km² and the figure for Missouri was 35.1 inhabitants per km². Source: the U.S. Census Bureau.

Highest1,754.5St. Louis city
Lowest2.8Worth County
Median11.9115 counties
Missouri35.1History

Top 40 counties, 2024

CSVChart (SVG)

St. Louis citySt. Louis city: 1,754.5 inhabitants per km²1,754.5St. Louis CountySt. Louis County: 752.9 inhabitants per km²752.9Jackson CountyJackson County: 465.5 inhabitants per km²465.5St. Charles CountySt. Charles County: 291.2 inhabitants per km²291.2Clay CountyClay County: 255 inhabitants per km²255Greene CountyGreene County: 175.6 inhabitants per km²175.6Jefferson CountyJefferson County: 136.6 inhabitants per km²136.6Boone CountyBoone County: 107.5 inhabitants per km²107.5Platte CountyPlatte County: 103.9 inhabitants per km²103.9Buchanan CountyBuchanan County: 79.1 inhabitants per km²79.1Cole CountyCole County: 76.7 inhabitants per km²76.7Jasper CountyJasper County: 76.5 inhabitants per km²76.5Christian CountyChristian County: 65.9 inhabitants per km²65.9Cass CountyCass County: 63.2 inhabitants per km²63.2St. Francois CountySt. Francois County: 57.6 inhabitants per km²57.6Cape Girardeau CountyCape Girardeau County: 55.7 inhabitants per km²55.7Franklin CountyFranklin County: 44.9 inhabitants per km²44.9Lincoln CountyLincoln County: 40.5 inhabitants per km²40.5Newton CountyNewton County: 38.1 inhabitants per km²38.1Pulaski CountyPulaski County: 38 inhabitants per km²38Scott CountyScott County: 34.9 inhabitants per km²34.9Taney CountyTaney County: 34.7 inhabitants per km²34.7Warren CountyWarren County: 34.7 inhabitants per km²34.7Webster CountyWebster County: 27.4 inhabitants per km²27.4Stone CountyStone County: 27.1 inhabitants per km²27.1Camden CountyCamden County: 26 inhabitants per km²26Johnson CountyJohnson County: 26 inhabitants per km²26Phelps CountyPhelps County: 26 inhabitants per km²26Marion CountyMarion County: 25.1 inhabitants per km²25.1Pettis CountyPettis County: 24.8 inhabitants per km²24.8Lawrence CountyLawrence County: 24.7 inhabitants per km²24.7Butler CountyButler County: 23.3 inhabitants per km²23.3Callaway CountyCallaway County: 20.9 inhabitants per km²20.9Lafayette CountyLafayette County: 20.5 inhabitants per km²20.5Polk CountyPolk County: 20.2 inhabitants per km²20.2Clinton CountyClinton County: 20 inhabitants per km²20Randolph CountyRandolph County: 19.5 inhabitants per km²19.5Dunklin CountyDunklin County: 19.3 inhabitants per km²19.3Laclede CountyLaclede County: 18.5 inhabitants per km²18.5Barry CountyBarry County: 17.7 inhabitants per km²17.7
inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2024
inhabitants per km²		Change on 2023
1St. Louis city1,754.5-1%
2St. Louis County752.9+0.2%
3Jackson County465.5+1.1%
4St. Charles County291.2+1.2%
5Clay County255+1.1%
6Greene County175.6+0.8%
7Jefferson County136.6+0.4%
8Boone County107.5+0.7%
9Platte County103.9+1%
10Buchanan County79.1+0.4%
11Cole County76.7+0.6%
12Jasper County76.5+1.1%
13Christian County65.9+1.6%
14Cass County63.2+2%
15St. Francois County57.6+0.6%
16Cape Girardeau County55.7+0.6%
17Franklin County44.9+0.9%
18Lincoln County40.5+1.8%
19Newton County38.1+1.4%
20Pulaski County38+0.3%
21Scott County34.9+0.1%
22Taney County34.7+0.1%
23Warren County34.7+1.8%
24Webster County27.4+1.5%
25Stone County27.1-0.3%
26Camden County26+0.2%
27Johnson County26+1.4%
28Phelps County26-0.2%
29Marion County25.1+0.5%
30Pettis County24.8+0.6%
31Lawrence County24.7+0.8%
32Butler County23.3-0.1%
33Callaway County20.9+1%
34Lafayette County20.5+0.7%
35Polk County20.2+0.9%
36Clinton County20+0.8%
37Randolph County19.5+1.1%
38Dunklin County19.3-0.1%
39Laclede County18.5+0.1%
40Barry County17.7+1%
41Adair County17.4+1.8%
42McDonald County17.1-0.7%
43Howell County17+0.4%
44Miller County16.7+0.5%
45Andrew County16.2-0.1%
46Ray County15.8+0.3%
47Perry County15.6+0.9%
48Morgan County14.4+1.9%
49Ste. Genevieve County14.4-0.3%
50Moniteau County14.4+1.2%
51Audrain County13.6-0.3%
52Stoddard County13.3+0.1%
53Dallas County12.7+0.5%
54Henry County12.5+0.5%
55Cedar County12.1+1.7%
56Washington County12+0.2%
57Crawford County11.9+0.5%
58Saline County11.9+0.2%
59Cooper County11.7+1.1%
60Pemiscot County11.3-1.2%
61Benton County11.3-0.2%
62Mississippi County11.2+0.9%
63Wright County11.1+0.7%
64Gasconade County10.9-0.2%
65Livingston County10.7+0.5%
66Pike County10.4+0.7%
67Madison County10+0.9%
68Vernon County9.2+0.2%
69DeKalb County9.1-0.1%
70Nodaway County8.9-2%
71New Madrid County8.7-0.9%
72Grundy County8.6-0.6%
73Hickory County8.6+1.1%
74Ralls County8.6-0.3%
75Osage County8.60%
76Howard County8.4+0.2%
77Texas County8.4+0.4%
78Montgomery County8.3+0.8%
79Caldwell County8.1+0.1%
80Barton County7.7-0.1%
81Bates County7.6+1.2%
82Lewis County7.5+0.2%
83Dent County7.5+0.1%
84Linn County7.4+0.7%
85Macon County7.3-0%
86Bollinger County6.6+0.4%
86Iron County6.6-0.5%
88Ripley County6.6-0.9%
89Maries County6.2+0.5%
90Dade County6-1.1%
91Daviess County5.8-0.4%
92Douglas County5.8+0.3%
93St. Clair County5.6+1%
94Wayne County5.5+0.2%
95Monroe County5.3+1.6%
96Schuyler County5.1+0.3%
97Clark County5-0.9%
98Gentry County5+0.1%
99Ozark County4.7+1.2%
100Carroll County4.7+0.6%
101Shelby County4.6+0.7%
102Harrison County4.4+0.1%
103Oregon County4.2-0.5%
104Scotland County4.1-0.2%
105Carter County4.1+0.7%
106Chariton County3.8-0.2%
107Atchison County3.6+0.7%
108Holt County3.5-1.1%
109Sullivan County3.4-1.6%
110Putnam County3.4-1.8%
111Mercer County2.9-2.2%
112Knox County2.8-0.4%
113Reynolds County2.8-0.8%
114Shannon County2.8+0.5%
115Worth County2.8-0.4%

Other periods

About this ranking

Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.

United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.

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Questions

Which county has the highest population density?

St. Louis city, with 1,754.5 inhabitants per km² in 2024, according to the U.S. Census Bureau.

Which county has the lowest population density?

Worth County, with 2.8 inhabitants per km² in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.

Population density: other rankings

Counties in Missouri: more rankings