Oklahoma County Area & Size Rankings

Understanding Oklahoma’s county areas

The land-area range runs from Marshall County at 371.5 mi² to Osage County at 2,246.7 mi². The largest has 6 times the land area of the smallest and accounts for 3.3% of the combined county land in Oklahoma. Compare with every state’s largest county.

The median county-equivalent land area is 802.7 mi², above 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

McIntosh County has the most assigned water area, at 93.8 mi². It also has the highest water share, with water making up 13.2% 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 77 entries, water accounts for 1.9% 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.

Where people live

An estimated 4,123,288 people lived in Oklahoma on July 1, 2025 (+4.1% since 2020), or 1.2% of the national total in this dataset. Oklahoma County is the most populous county equivalent, with 822,125 residents — 19.9% of the state. The largest by land, Osage County, has 46,794.

Across the state there are 60 people per square mile of land. County densities range from 1,226 in Tulsa County to 1.1 in Cimarron County; the median county equivalent has 28. Switch the map above to density to see where the state’s population concentrates.

Compare the largest and smallest county equivalents in Oklahoma 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.

#	County / equivalent	Land	Water	Water share	Population	Per mi²
1	Osage CountyGEOID 40113	2,246.7 mi²	57.3 mi²	2.5%	46,794	21
2	Texas CountyGEOID 40139	2,041.3 mi²	7.4 mi²	0.4%	20,322	10
3	McCurtain CountyGEOID 40089	1,850.8 mi²	51.7 mi²	2.7%	30,744	17
4	Cimarron CountyGEOID 40025	1,834.8 mi²	6.1 mi²	0.3%	2,059	1.1
5	Beaver CountyGEOID 40007	1,814.8 mi²	2.8 mi²	0.2%	4,882	2.7
6	Le Flore CountyGEOID 40079	1,589.4 mi²	19.2 mi²	1.2%	50,196	32
7	Pushmataha CountyGEOID 40127	1,395.6 mi²	27 mi²	1.9%	10,807	7.7
8	Pittsburg CountyGEOID 40121	1,305.5 mi²	72.4 mi²	5.3%	43,320	33
9	Woods CountyGEOID 40151	1,286.5 mi²	3.5 mi²	0.3%	8,443	6.6
10	Caddo CountyGEOID 40015	1,277.8 mi²	12.4 mi²	1%	26,130	20
11	Woodward CountyGEOID 40153	1,242.8 mi²	3.7 mi²	0.3%	19,827	16
12	Ellis CountyGEOID 40045	1,231.5 mi²	0.4 mi²	0%	3,613	2.9
13	Roger Mills CountyGEOID 40129	1,141.1 mi²	5.3 mi²	0.5%	3,259	2.9
14	Grady CountyGEOID 40051	1,100.5 mi²	4.4 mi²	0.4%	59,128	54
15	Comanche CountyGEOID 40031	1,069.3 mi²	14.5 mi²	1.3%	122,158	114
16	Garfield CountyGEOID 40047	1,058.5 mi²	1.6 mi²	0.1%	61,779	58
17	Harper CountyGEOID 40059	1,038.6 mi²	2 mi²	0.2%	3,172	3.1
18	Kiowa CountyGEOID 40075	1,015.1 mi²	15.6 mi²	1.5%	8,181	8.1
19	Washita CountyGEOID 40149	1,003.1 mi²	5.6 mi²	0.6%	10,884	11
20	Grant CountyGEOID 40053	1,000.7 mi²	2.7 mi²	0.3%	4,067	4.1
21	Dewey CountyGEOID 40043	999.6 mi²	8.8 mi²	0.9%	4,207	4.2
22	Custer CountyGEOID 40039	988.8 mi²	13.3 mi²	1.3%	28,175	28
23	Atoka CountyGEOID 40005	975.5 mi²	14.4 mi²	1.5%	14,609	15
24	Major CountyGEOID 40093	955 mi²	3 mi²	0.3%	7,536	7.9
25	Lincoln CountyGEOID 40081	952.4 mi²	13.4 mi²	1.4%	35,278	37
26	Creek CountyGEOID 40037	949.9 mi²	19.6 mi²	2%	74,967	79
27	Blaine CountyGEOID 40011	928.5 mi²	10.4 mi²	1.1%	8,515	9.2
28	Kay CountyGEOID 40071	919.6 mi²	25.3 mi²	2.7%	43,490	47
29	Bryan CountyGEOID 40013	904.3 mi²	39.3 mi²	4.2%	51,367	57
30	Beckham CountyGEOID 40009	901.7 mi²	2.1 mi²	0.2%	22,159	25
31	Kingfisher CountyGEOID 40073	898.1 mi²	7.9 mi²	0.9%	15,795	18
32	Canadian CountyGEOID 40017	896.6 mi²	8.9 mi²	1%	187,189	209
33	Tillman CountyGEOID 40141	871.1 mi²	8.1 mi²	0.9%	6,780	7.8
34	Stephens CountyGEOID 40137	870.2 mi²	21.2 mi²	2.4%	44,310	51
35	Alfalfa CountyGEOID 40003	866.6 mi²	14.9 mi²	1.7%	5,649	6.5
36	Carter CountyGEOID 40019	822.3 mi²	11.5 mi²	1.4%	48,910	59
37	Muskogee CountyGEOID 40101	810.7 mi²	29.4 mi²	3.5%	66,708	82
38	Hughes CountyGEOID 40063	804.5 mi²	10.2 mi²	1.3%	13,455	17
39	Jackson CountyGEOID 40065	802.7 mi²	1.6 mi²	0.2%	24,764	31
40	Garvin CountyGEOID 40049	802.1 mi²	11.6 mi²	1.4%	26,377	33
41	Pottawatomie CountyGEOID 40125	787.8 mi²	5.7 mi²	0.7%	75,102	95
42	Choctaw CountyGEOID 40023	770.4 mi²	29.1 mi²	3.6%	14,059	18
43	Craig CountyGEOID 40035	761.3 mi²	1.4 mi²	0.2%	14,518	19
44	Jefferson CountyGEOID 40067	759 mi²	15.2 mi²	2%	5,431	7.2
45	Cherokee CountyGEOID 40021	749.1 mi²	26.9 mi²	3.5%	49,196	66
46	Logan CountyGEOID 40083	743.7 mi²	5.1 mi²	0.7%	55,473	75
47	Delaware CountyGEOID 40041	737.7 mi²	54.3 mi²	6.9%	41,910	57
48	Noble CountyGEOID 40103	731.7 mi²	10.9 mi²	1.5%	10,899	15
49	Latimer CountyGEOID 40077	722.1 mi²	7 mi²	1%	9,645	13
50	Pontotoc CountyGEOID 40123	720.4 mi²	4.9 mi²	0.7%	38,528	53
51	Oklahoma CountyGEOID 40109	708.9 mi²	9.5 mi²	1.3%	822,125	1,160
52	Okmulgee CountyGEOID 40111	697.4 mi²	5 mi²	0.7%	37,241	53
53	Payne CountyGEOID 40119	684.9 mi²	12.4 mi²	1.8%	83,889	122
54	Rogers CountyGEOID 40131	675.7 mi²	35.9 mi²	5%	102,197	151
55	Sequoyah CountyGEOID 40135	673.6 mi²	40.6 mi²	5.7%	40,842	61
56	Mayes CountyGEOID 40097	655.3 mi²	28.2 mi²	4.1%	40,416	62
57	Johnston CountyGEOID 40069	643.1 mi²	15.3 mi²	2.3%	10,448	16
58	Greer CountyGEOID 40055	639.3 mi²	4.3 mi²	0.7%	5,373	8.4
59	Seminole CountyGEOID 40133	632.8 mi²	7.7 mi²	1.2%	23,441	37
60	Cotton CountyGEOID 40033	632.6 mi²	9.3 mi²	1.4%	5,432	8.6
61	Okfuskee CountyGEOID 40107	618.5 mi²	10.3 mi²	1.6%	11,451	19
62	McIntosh CountyGEOID 40091	618.3 mi²	93.8 mi²	13.2%	19,758	32
63	Haskell CountyGEOID 40061	576.7 mi²	48.7 mi²	7.8%	11,787	20
64	Adair CountyGEOID 40001	573.9 mi²	3.4 mi²	0.6%	19,828	35
65	McClain CountyGEOID 40087	570.7 mi²	9.5 mi²	1.6%	49,647	87
66	Tulsa CountyGEOID 40143	570.2 mi²	16.7 mi²	2.8%	698,782	1,226
67	Pawnee CountyGEOID 40117	568.3 mi²	26.6 mi²	4.5%	16,029	28
68	Nowata CountyGEOID 40105	565.8 mi²	15 mi²	2.6%	9,522	17
69	Wagoner CountyGEOID 40145	561.9 mi²	28.9 mi²	4.9%	93,263	166
70	Cleveland CountyGEOID 40027	538.9 mi²	19 mi²	3.4%	303,973	564
71	Harmon CountyGEOID 40057	537.3 mi²	1.5 mi²	0.3%	2,327	4.3
72	Coal CountyGEOID 40029	516.8 mi²	4.7 mi²	0.9%	5,436	11
73	Love CountyGEOID 40085	513.9 mi²	18.3 mi²	3.4%	10,780	21
74	Ottawa CountyGEOID 40115	470.8 mi²	13.8 mi²	2.8%	30,438	65
75	Murray CountyGEOID 40099	416.4 mi²	8.8 mi²	2.1%	13,805	33
76	Washington CountyGEOID 40147	415.5 mi²	8.8 mi²	2.1%	54,037	130
77	Marshall CountyGEOID 40095	371.5 mi²	55.5 mi²	13%	16,255	44

County / equivalent

Land

Water

Water share

Population

Per mi²

Osage CountyGEOID 40113

2,246.7 mi²

57.3 mi²

2.5%

46,794

Texas CountyGEOID 40139

2,041.3 mi²

7.4 mi²

0.4%

20,322

McCurtain CountyGEOID 40089

1,850.8 mi²

51.7 mi²

2.7%

30,744

Cimarron CountyGEOID 40025

1,834.8 mi²

6.1 mi²

0.3%

2,059

1.1

Beaver CountyGEOID 40007

1,814.8 mi²

2.8 mi²

0.2%

4,882

2.7

Le Flore CountyGEOID 40079

1,589.4 mi²

19.2 mi²

1.2%

50,196

Pushmataha CountyGEOID 40127

1,395.6 mi²

27 mi²

1.9%

10,807

7.7

Pittsburg CountyGEOID 40121

1,305.5 mi²

72.4 mi²

5.3%

43,320

Woods CountyGEOID 40151

1,286.5 mi²

3.5 mi²

0.3%

8,443

6.6

Caddo CountyGEOID 40015

1,277.8 mi²

12.4 mi²

26,130

Woodward CountyGEOID 40153

1,242.8 mi²

3.7 mi²

0.3%

19,827

Ellis CountyGEOID 40045

1,231.5 mi²

0.4 mi²

3,613

2.9

Roger Mills CountyGEOID 40129

1,141.1 mi²

5.3 mi²

0.5%

3,259

2.9

Grady CountyGEOID 40051

1,100.5 mi²

4.4 mi²

0.4%

59,128

Comanche CountyGEOID 40031

1,069.3 mi²

14.5 mi²

1.3%

122,158

114

Garfield CountyGEOID 40047

1,058.5 mi²

1.6 mi²

0.1%

61,779

Harper CountyGEOID 40059

1,038.6 mi²

2 mi²

0.2%

3,172

3.1

Kiowa CountyGEOID 40075

1,015.1 mi²

15.6 mi²

1.5%

8,181

8.1

Washita CountyGEOID 40149

1,003.1 mi²

5.6 mi²

0.6%

10,884

Grant CountyGEOID 40053

1,000.7 mi²

2.7 mi²

0.3%

4,067

4.1

Dewey CountyGEOID 40043

999.6 mi²

8.8 mi²

0.9%

4,207

4.2

Custer CountyGEOID 40039

988.8 mi²

13.3 mi²

1.3%

28,175

Atoka CountyGEOID 40005

975.5 mi²

14.4 mi²

1.5%

14,609

Major CountyGEOID 40093

955 mi²

3 mi²

0.3%

7,536

7.9

Lincoln CountyGEOID 40081

952.4 mi²

13.4 mi²

1.4%

35,278

Creek CountyGEOID 40037

949.9 mi²

19.6 mi²

74,967

Blaine CountyGEOID 40011

928.5 mi²

10.4 mi²

1.1%

8,515

9.2

Kay CountyGEOID 40071

919.6 mi²

25.3 mi²

2.7%

43,490

Bryan CountyGEOID 40013

904.3 mi²

39.3 mi²

4.2%

51,367

Beckham CountyGEOID 40009

901.7 mi²

2.1 mi²

0.2%

22,159

Kingfisher CountyGEOID 40073

898.1 mi²

7.9 mi²

0.9%

15,795

Canadian CountyGEOID 40017

896.6 mi²

8.9 mi²

187,189

209

Tillman CountyGEOID 40141

871.1 mi²

8.1 mi²

0.9%

6,780

7.8

Stephens CountyGEOID 40137

870.2 mi²

21.2 mi²

2.4%

44,310

Alfalfa CountyGEOID 40003

866.6 mi²

14.9 mi²

1.7%

5,649

6.5

Carter CountyGEOID 40019

822.3 mi²

11.5 mi²

1.4%

48,910

Muskogee CountyGEOID 40101

810.7 mi²

29.4 mi²

3.5%

66,708

Hughes CountyGEOID 40063

804.5 mi²

10.2 mi²

1.3%

13,455

Jackson CountyGEOID 40065

802.7 mi²

1.6 mi²

0.2%

24,764

Garvin CountyGEOID 40049

802.1 mi²

11.6 mi²

1.4%

26,377

Pottawatomie CountyGEOID 40125

787.8 mi²

5.7 mi²

0.7%

75,102

Choctaw CountyGEOID 40023

770.4 mi²

29.1 mi²

3.6%

14,059

Craig CountyGEOID 40035

761.3 mi²

1.4 mi²

0.2%

14,518

Jefferson CountyGEOID 40067

759 mi²

15.2 mi²

5,431

7.2

Cherokee CountyGEOID 40021

749.1 mi²

26.9 mi²

3.5%

49,196

Logan CountyGEOID 40083

743.7 mi²

5.1 mi²

0.7%

55,473

Delaware CountyGEOID 40041

737.7 mi²

54.3 mi²

6.9%

41,910

Noble CountyGEOID 40103

731.7 mi²

10.9 mi²

1.5%

10,899

Latimer CountyGEOID 40077

722.1 mi²

7 mi²

9,645

Pontotoc CountyGEOID 40123

720.4 mi²

4.9 mi²

0.7%

38,528

Oklahoma CountyGEOID 40109

708.9 mi²

9.5 mi²

1.3%

822,125

1,160

Okmulgee CountyGEOID 40111

697.4 mi²

5 mi²

0.7%

37,241

Payne CountyGEOID 40119

684.9 mi²

12.4 mi²

1.8%

83,889

122

Rogers CountyGEOID 40131

675.7 mi²

35.9 mi²

102,197

151

Sequoyah CountyGEOID 40135

673.6 mi²

40.6 mi²

5.7%

40,842

Mayes CountyGEOID 40097

655.3 mi²

28.2 mi²

4.1%

40,416

Johnston CountyGEOID 40069

643.1 mi²

15.3 mi²

2.3%

10,448

Greer CountyGEOID 40055

639.3 mi²

4.3 mi²

0.7%

5,373

8.4

Seminole CountyGEOID 40133

632.8 mi²

7.7 mi²

1.2%

23,441

Cotton CountyGEOID 40033

632.6 mi²

9.3 mi²

1.4%

5,432

8.6

Okfuskee CountyGEOID 40107

618.5 mi²

10.3 mi²

1.6%

11,451

McIntosh CountyGEOID 40091

618.3 mi²

93.8 mi²

13.2%

19,758

Haskell CountyGEOID 40061

576.7 mi²

48.7 mi²

7.8%

11,787

Adair CountyGEOID 40001

573.9 mi²

3.4 mi²

0.6%

19,828

McClain CountyGEOID 40087

570.7 mi²

9.5 mi²

1.6%

49,647

Tulsa CountyGEOID 40143

570.2 mi²

16.7 mi²

2.8%

698,782

1,226

Pawnee CountyGEOID 40117

568.3 mi²

26.6 mi²

4.5%

16,029

Nowata CountyGEOID 40105

565.8 mi²

15 mi²

2.6%

9,522

Wagoner CountyGEOID 40145

561.9 mi²

28.9 mi²

4.9%

93,263

166

Cleveland CountyGEOID 40027

538.9 mi²

19 mi²

3.4%

303,973

564

Harmon CountyGEOID 40057

537.3 mi²

1.5 mi²

0.3%

2,327

4.3

Coal CountyGEOID 40029

516.8 mi²

4.7 mi²

0.9%

5,436

Love CountyGEOID 40085

513.9 mi²

18.3 mi²

3.4%

10,780

Ottawa CountyGEOID 40115

470.8 mi²

13.8 mi²

2.8%

30,438

Murray CountyGEOID 40099

416.4 mi²

8.8 mi²

2.1%

13,805

Washington CountyGEOID 40147

415.5 mi²

8.8 mi²

2.1%

54,037

130

Marshall CountyGEOID 40095

371.5 mi²

55.5 mi²

13%

16,255

Oklahoma counties by area

Understanding Oklahoma’s county areas

Where water changes the picture

Where people live

Complete area table