MO · 2026 Census Gazetteer

Missouri counties by area

Official, comparable measurements for 115 counties and county equivalents.

Source fields preservedGEOID · ALAND · AWATER

County equivalents115

Combined land68,746.5 mi²

Combined water960.4 mi²

Largest by landTexas County

Understanding Missouri’s county areas

The land-area range runs from St. Louis city at 61.7 mi² to Texas County at 1,177.3 mi². The largest has 19.1 times the land area of the smallest and accounts for 1.7% of the combined county land in Missouri.

The median county-equivalent land area is 592 mi², below the national median of 604.5 mi². The median describes the middle of the county size distribution; it does not describe how people or development are distributed. A state with a few very large counties can have a much smaller median than its largest entry suggests.

Where water changes the picture

Camden County has the most assigned water area, at 52.7 mi². Stone County has the highest water share, with water making up 9.2% of its total area. Water area and water percentage answer different questions: the first measures an amount, while the second measures the mix of land and water.

Across all 115 entries, water accounts for 1.4% of the combined total area. This is calculated from the summed land and water measurements, rather than averaging county percentages, which would give each small and large county equal weight.

Compare the largest and smallest county equivalents in Missouri to see land, water, and total area on the same scale.

These calculations use the 2026 Census county records listed below. County-equivalent boundaries vary between states; area alone does not measure population, density, or usable land. See coverage and calculation rules.

Complete area table

Sorted from largest to smallest land area.

#	County / equivalent	Land	Water	Water share
1	Texas CountyGEOID 29215	1,177.3 mi²	2 mi²	0.2%
2	Shannon CountyGEOID 29203	1,003.8 mi²	0.2 mi²	0%
3	Howell CountyGEOID 29091	927.2 mi²	1.1 mi²	0.1%
4	Franklin CountyGEOID 29071	922.5 mi²	8.1 mi²	0.9%
5	Nodaway CountyGEOID 29147	877 mi²	0.9 mi²	0.1%
6	Bates CountyGEOID 29013	836.7 mi²	14.7 mi²	1.7%
7	Callaway CountyGEOID 29027	834.6 mi²	12.8 mi²	1.5%
8	Johnson CountyGEOID 29101	829.3 mi²	3.9 mi²	0.5%
9	Vernon CountyGEOID 29217	826.4 mi²	10.4 mi²	1.2%
10	Stoddard CountyGEOID 29207	823.1 mi²	5.8 mi²	0.7%
11	Douglas CountyGEOID 29067	813.6 mi²	1 mi²	0.1%
12	Reynolds CountyGEOID 29179	808.5 mi²	5.9 mi²	0.7%
13	Macon CountyGEOID 29121	801.2 mi²	11.2 mi²	1.4%
14	Oregon CountyGEOID 29149	789.8 mi²	1.7 mi²	0.2%
15	Barry CountyGEOID 29009	778.1 mi²	12.7 mi²	1.6%
16	Laclede CountyGEOID 29105	764.7 mi²	3.4 mi²	0.4%
17	Washington CountyGEOID 29221	759.9 mi²	2.6 mi²	0.3%
18	Wayne CountyGEOID 29223	759.2 mi²	14.9 mi²	1.9%
19	Saline CountyGEOID 29195	755.5 mi²	11.4 mi²	1.5%
20	Dent CountyGEOID 29065	752.8 mi²	1.7 mi²	0.2%
21	Chariton CountyGEOID 29041	751.2 mi²	15.6 mi²	2%
22	Ozark CountyGEOID 29153	745 mi²	10.3 mi²	1.4%
23	Crawford CountyGEOID 29055	742.5 mi²	1.3 mi²	0.2%
24	Harrison CountyGEOID 29081	722.5 mi²	3.9 mi²	0.5%
25	Benton CountyGEOID 29015	704 mi²	48.5 mi²	6.4%
26	Henry CountyGEOID 29083	696.9 mi²	35.4 mi²	4.8%
27	Cass CountyGEOID 29037	696.6 mi²	5.8 mi²	0.8%
28	Butler CountyGEOID 29023	694.8 mi²	4.3 mi²	0.6%
29	Carroll CountyGEOID 29033	694.6 mi²	6.8 mi²	1%
30	Audrain CountyGEOID 29007	692.3 mi²	4.6 mi²	0.7%
31	Boone CountyGEOID 29019	685.6 mi²	5.5 mi²	0.8%
32	Pettis CountyGEOID 29159	682.2 mi²	4 mi²	0.6%
33	Wright CountyGEOID 29229	681.8 mi²	1.4 mi²	0.2%
34	Greene CountyGEOID 29077	675.3 mi²	2.6 mi²	0.4%
35	St. Clair CountyGEOID 29185	675 mi²	27.1 mi²	3.9%
36	New Madrid CountyGEOID 29143	674.9 mi²	21.7 mi²	3.1%
37	Phelps CountyGEOID 29161	671.8 mi²	2.5 mi²	0.4%
38	Pike CountyGEOID 29163	670.4 mi²	14.3 mi²	2.1%
39	Jefferson CountyGEOID 29099	656 mi²	7.8 mi²	1.2%
40	Camden CountyGEOID 29029	655.8 mi²	52.7 mi²	7.4%
41	Sullivan CountyGEOID 29211	648 mi²	3.5 mi²	0.5%
42	Monroe CountyGEOID 29137	647.6 mi²	22.5 mi²	3.4%
43	Jasper CountyGEOID 29097	638.5 mi²	2.8 mi²	0.4%
44	Polk CountyGEOID 29167	635.5 mi²	6.9 mi²	1.1%
45	Taney CountyGEOID 29213	632.3 mi²	19.3 mi²	3%
46	Ripley CountyGEOID 29181	629.5 mi²	2.1 mi²	0.3%
47	Lafayette CountyGEOID 29107	628.3 mi²	10.4 mi²	1.6%
48	Lincoln CountyGEOID 29113	626.6 mi²	13.9 mi²	2.2%
49	Newton CountyGEOID 29145	624.8 mi²	1.8 mi²	0.3%
50	Bollinger CountyGEOID 29017	617.9 mi²	3.3 mi²	0.5%
51	Linn CountyGEOID 29115	615.6 mi²	5.8 mi²	0.9%
52	Lawrence CountyGEOID 29109	611.8 mi²	1.6 mi²	0.3%
53	Osage CountyGEOID 29151	606.5 mi²	6.8 mi²	1.1%
54	Jackson CountyGEOID 29095	604.7 mi²	11.6 mi²	1.9%
55	Morgan CountyGEOID 29141	597.5 mi²	16.4 mi²	2.7%
56	Miller CountyGEOID 29131	592.7 mi²	7.4 mi²	1.2%
57	Webster CountyGEOID 29225	592.6 mi²	1.2 mi²	0.2%
58	Barton CountyGEOID 29011	592 mi²	4.7 mi²	0.8%
59	Cape Girardeau CountyGEOID 29031	578.5 mi²	7.8 mi²	1.3%
60	Ray CountyGEOID 29177	569 mi²	5.2 mi²	0.9%
61	Adair CountyGEOID 29001	567.3 mi²	2.1 mi²	0.4%
62	Cooper CountyGEOID 29053	564.7 mi²	4.4 mi²	0.8%
63	Daviess CountyGEOID 29061	563.3 mi²	5.8 mi²	1%
64	Christian CountyGEOID 29043	562.6 mi²	1.2 mi²	0.2%
65	St. Charles CountyGEOID 29183	560.3 mi²	32.1 mi²	5.4%
66	Iron CountyGEOID 29093	550.3 mi²	1.8 mi²	0.3%
67	Atchison CountyGEOID 29005	547.3 mi²	2.8 mi²	0.5%
68	Pulaski CountyGEOID 29169	547.2 mi²	4.4 mi²	0.8%
69	Dunklin CountyGEOID 29069	541.9 mi²	5.3 mi²	1%
70	Dallas CountyGEOID 29059	541 mi²	1.9 mi²	0.3%
71	McDonald CountyGEOID 29119	539.4 mi²	0.2 mi²	0%
72	Montgomery CountyGEOID 29139	535 mi²	5.4 mi²	1%
73	Livingston CountyGEOID 29117	532.3 mi²	6.3 mi²	1.2%
74	Maries CountyGEOID 29125	526.9 mi²	2.9 mi²	0.6%
75	Gasconade CountyGEOID 29073	519 mi²	7 mi²	1.3%
76	Putnam CountyGEOID 29171	517.3 mi²	2.3 mi²	0.4%
77	St. Louis CountyGEOID 29189	508.5 mi²	15.4 mi²	2.9%
78	Carter CountyGEOID 29035	507.3 mi²	1.7 mi²	0.3%
79	Lewis CountyGEOID 29111	505 mi²	5.8 mi²	1.1%
80	Clark CountyGEOID 29045	504.6 mi²	7.2 mi²	1.4%
81	Knox CountyGEOID 29103	504 mi²	2.8 mi²	0.6%
82	Shelby CountyGEOID 29205	500.9 mi²	1.5 mi²	0.3%
83	Ste. Genevieve CountyGEOID 29186	499.2 mi²	7.6 mi²	1.5%
84	Madison CountyGEOID 29123	494.4 mi²	3.2 mi²	0.6%
85	Pemiscot CountyGEOID 29155	492.6 mi²	20.8 mi²	4.1%
86	Gentry CountyGEOID 29075	491.4 mi²	0.3 mi²	0.1%
87	Dade CountyGEOID 29057	490 mi²	16.2 mi²	3.2%
88	Randolph CountyGEOID 29175	482.7 mi²	5.1 mi²	1%
89	Cedar CountyGEOID 29039	474.5 mi²	24.2 mi²	4.9%
90	Perry CountyGEOID 29157	474.4 mi²	9.8 mi²	2%
91	Ralls CountyGEOID 29173	469.8 mi²	14 mi²	2.9%
92	Stone CountyGEOID 29209	463.8 mi²	46.8 mi²	9.2%
93	Howard CountyGEOID 29089	463.8 mi²	7.7 mi²	1.6%
94	Holt CountyGEOID 29087	462.7 mi²	7.7 mi²	1.6%
95	Mercer CountyGEOID 29129	453.8 mi²	1.3 mi²	0.3%
96	St. Francois CountyGEOID 29187	451.9 mi²	2.8 mi²	0.6%
97	Marion CountyGEOID 29127	436.9 mi²	7.4 mi²	1.7%
98	Scotland CountyGEOID 29199	436.5 mi²	2.8 mi²	0.6%
99	Grundy CountyGEOID 29079	435.3 mi²	2.7 mi²	0.6%
100	Andrew CountyGEOID 29003	432.6 mi²	3.7 mi²	0.9%
101	Warren CountyGEOID 29219	428.6 mi²	9.1 mi²	2.1%
102	Caldwell CountyGEOID 29025	426.4 mi²	3.2 mi²	0.8%
103	DeKalb CountyGEOID 29063	421.4 mi²	4.5 mi²	1%
104	Scott CountyGEOID 29201	420 mi²	5.9 mi²	1.4%
105	Platte CountyGEOID 29165	419.8 mi²	6.5 mi²	1.5%
106	Clinton CountyGEOID 29049	418.9 mi²	4.5 mi²	1.1%
107	Moniteau CountyGEOID 29135	415.1 mi²	3.8 mi²	0.9%
108	Mississippi CountyGEOID 29133	411.6 mi²	17.2 mi²	4%
109	Buchanan CountyGEOID 29021	408.3 mi²	6.9 mi²	1.7%
110	Hickory CountyGEOID 29085	398.8 mi²	12.9 mi²	3.1%
111	Clay CountyGEOID 29047	397.7 mi²	11 mi²	2.7%
112	Cole CountyGEOID 29051	391.6 mi²	7.4 mi²	1.9%
113	Schuyler CountyGEOID 29197	307.3 mi²	0.9 mi²	0.3%
114	Worth CountyGEOID 29227	266.6 mi²	0.2 mi²	0.1%
115	St. Louis cityGEOID 29510	61.7 mi²	4.5 mi²	6.7%

How to read this table. Land and water areas are Census statistical measurements in square miles. Adding county rows can differ slightly from separately published state totals because of rounding and geographic treatment.