List of the 100 largest counties in the United States by area

This is a list of the 100 largest counties in the United States as of April 2010, the date of the last nationwide census.

list

Map of the counties in the United States

Downtown Phoenix

Las Vegas

Casinos in downtown Reno

The Pinal County Courthouse in Florence, Pinal County, built in 1891

Okanogan County Courthouse

Rosebud County Courthouse

The Mount Lindsey is 4,282 meters high and is located in Las Animas County , Colorado

View over Los Angeles and Los Angeles County

San Diego at night

Sand dunes in Imperial County

Snake River in Teton County

space	county	State	County Seat	Size [km²]	Residents
1	San Bernardino County	California	San Bernardino	52.272	2,035,210
2	Coconino County	Arizona	Flagstaff	48,332	134,421
3	Nye County	Nevada	Tonopah	47.030	43,946
4th	Elko County	Nevada	Electrolytic capacitor	44,555	48,818
5	Mohave County	Arizona	Kingman	34,886	200.186
6th	Apache County	Arizona	St. Johns	29,055	71,518
7th	Lincoln County	Nevada	Pioche	27,549	5,345
8th	Sweetwater County	Wyoming	Green River	27,172	43,806
9	Inyo County	California	Independence	26,487	18,546
10	Harney County	Oregon	Burns	26,486	7,422
11	Navajo County	Arizona	Holbrook	25,795	107,449
12	Malheur County	Oregon	Vale	25,718	31,313
13	Humboldt County	Nevada	Winnemucca	25,013	16,528
14th	Fremont County	Wyoming	Countries	23,998	40.123
15th	Maricopa County	Arizona	Phoenix	23,890	3,817,117
16	Pima County	Arizona	Tucson	23,799	980.263
17th	White Pine County	Nevada	Ely	23,042	10,030
18th	Idaho County	Idaho	Grangeville	22,021	15,679
19th	Lake County	Oregon	Lakeview	21,648	7,895
20th	Kern County	California	Bakersfield	21,138	889.631
21st	Yavapai County	Arizona	Prescott	21,051	211.033
22nd	Clark County	Nevada	Las Vegas	20,955	1,951,269
23	Carbon County	Wyoming	Rawlins	20,627	15,885
24	San Ruan County	Utah	Monticello	20,547	14,746
25th	Owyhee County	Idaho	Murphy	19,934	11,526
26th	Riverside County	California	Riverside	18,915	2,189,641
27	Tooele County	Utah	Tooele	18,874	58,218
28	Park County	Wyoming	Cody	18,044	28.205
29	Catron County	New Mexico	reserve	17,946	3,725
30th	St. Louis County	Minnesota	Duluth	17,767	200.226
31	Aroostook County	Maine	Houlton	17,686	71,870
32	Millard County	Utah	Fillmore	17,684	12,503
33	Box Elder County	Utah	Brigham City	17,428	49,975
34	Socorro County	New Mexico	Socorro	17,220	17,866
35	Otero County	New Mexico	Alamogordo	17.162	63,797
36	Washoe County	Nevada	Reno	16,968	421,407
37	Siskiyou County	California	Yreka	16,440	44,900
38	Cochise County	Arizona	Bisbee	16,107	131,346
39	Brewster County	Texas	Alpine	16,039	9,232
40	Klamath County	Oregon	Klamath Falls	15,892	66,380
41	Chaves County	New Mexico	Roswell	15,734	65,645
42	Pershing County	Nevada	Lovelock	15,715	6,753
43	Fresno County	California	Fresno	15,585	930.450
44	Cherry County	Nebraska	Valentine	15,565	5,713
45	Keweenaw County	Michigan	Eagle River	15,452	2.156
46	Rio Arriba County	New Mexico	Tierra Amarilla	15,171	40,246
47	Beaverhead County	Montana	Dillon	14,432	9,246
48	San Juan County	New Mexico	Aztec	14,281	130.044
49	Lander County	Nevada	Battle Mountain	14,295	5,775
50	Yuma County	Arizona	Yuma	14,294	195,751
51	McKinley County	New Mexico	Gallup	14,129	71,492
52	Natrona County	Wyoming	Casper	13,923	75,450
53	Pinal County	Arizona	Florence	13,919	375.770
54	Okanogan County	Washington	Okanogan	13,766	41,120
55	Flathead County	Montana	Kalispell	13,614	90,928
56	Phillips County	Montana	Malta	13,499	4,253
57	Garfield County	Utah	Panguitch	13,489	5,172
58	Douglas County	Oregon	Roseburg	13,297	107,667
59	Hawaii County	Hawaii	Hilo	13,174	185.079
60	Valley County	Montana	Glasgow	13.110	7,369
61	Alger County	Michigan	Munising	13,077	9,601
62	Rosebud County	Montana	Forsyth	13,020	9.233
63	Churchill County	Nevada	Fallon	13,010	24,877
64	Big Horn County	Montana	Hardin	12,998	12,685
65	Custer County	Idaho	Challis	12,786	4,368
66	Sublette County	Wyoming	Pinedale	12,783	10,247
67	Garfield County	Montana	Jordan	12,555	1,206
68	Tulare County	California	Visalia	12,533	442.179
69	Lincoln County	New Mexico	Carrizozo	12,513	20,497
70	Campbell County	Wyoming	Gillette	12,436	46.133
71	Gila County	Arizona	Globe	12,421	53,597
72	Las Animas County	Colorado	Trinidad	12,368	15,507
73	Pecos County	Texas	Fort Stockton	12,341	15,507
74	Los Angeles County	California	los Angeles	12.308	9,818,605
75	Moffat County	Colorado	Craig	12.305	13,795
76	San Miguel County	New Mexico	Las Vegas	12,265	29,393
77	Lane County	Oregon	Eugene	12,229	351.715
78	Lassen County	California	Susanville	12,226	34,895
79	Graham County	Arizona	Safford	12,020	37,220
80	Hudspeth County	Texas	Sierra Blanca	12,841	3,476
81	Lemhi County	Idaho	Salmon	11,835	7,396
82	Cibola County	New Mexico	Grants	11,756	27,213
83	Grant County	Oregon	Canyon City	11,731	7,445
84	San Diego County	California	San Diego	11,721	3,095,313
85	La Paz County	Arizona	Parker	11,690	20,489
86	Uintah County	Utah	Vernal	11,652	32,588
87	Imperial County	California	El Centro	11,608	174,528
88	Emery County	Utah	Castle Dale	11,555	10,976
89	Lea County	New Mexico	Lovington	11,380	64,727
90	Piscataquis County	Maine	Dover-Foxcroft	11,337	17,535
91	Fergus County	Montana	Lewistown	11,267	11,586
92	Yakima County	Washington	Yakima	11,167	243.231
93	Albany County	Wyoming	Laramie	11,160	36,299
94	Converse County	Wyoming	Douglas	11,047	13,833
95	Blaine County	Montana	Chinook	10,979	6,491
96	Sierra County	New Mexico	Truth or Consequences	10,972	11,988
97	Teton County	Wyoming	Jackson	10,934	21,294
98	Modoc County	California	Alturas	10,887	9,686
99	Eddy County	New Mexico	Carlsbad	10,872	53,829
100	Eureka County	Nevada	Eureka	10,826	1,987

List of the 10 largest boroughs and unorganized boroughs

space	Borough	status	Area [km²]	Residents
1	Yukon-Koyukuk Census Area	Census Area	382.910	5,588
2	North Slope Borough	Borough	245,435	9,430
3	Bethel Census Area	Census Area	117,866	17,013
4th	Northwest Arctic Borough	Borough	105,573	7,523
5	Valdez-Cordova Census Area	Census Area	104.115	9,636
7th	Nome Census Area	Census Area	73,253	9,492
8th	Matanuska-Susitna Borough	Borough	65,423	59,322
9	Southeast Fairbanks Census Area	Census Area	64,908	7,029
10	Kenai Peninsula Borough	Borough	64.114	55,400

See also

• County in the United States
• List of the 100 largest counties in the United States by population