Arizona Counties by Land Area

Want to know about the largest to smallest counties in Arizona, USA in terms of total land area? Check this resource Arizona counties by land area to discover all the details regarding county map (boundary), and nearby counties. On the other hand, check Arizona counties by population and Arizona cities by population to know more about city and county based demographic details.

What is the largest county in Arizona by land area?
Coconino County is the largest county in Arizona spanning 18616.35 square miles, with an additional 45.03 square miles of water area. Following Coconino County, Mohave County ranks as the second largest in terms of land area, covering 13332.12 square miles, while Apache County secures the position as the third largest county in Arizona.

What is the smallest county by land area in Arizona?
Santa Cruz County is the smallest in Arizona by total land area, covers about 1236.26 square miles.

What is the largest county by population in Arizona?
Maricopa County in Arizona, USA, stands as the most populous county having 4,420,568 residents as per the 2022 census data.

What is the smallest county by population in Arizona?
Greenlee County is the smallest in Arizona by total population, having 9,563 residents as per the 2022 census data.

Arizona Counties by Size

Rank	County in Arizona	Land Area square miles	Water Area square miles	Total Area square miles
1	Coconino County	18,616	45	18,661
2	Mohave County	13,332	129	13,461
3	Apache County	11,198	21	11,219
4	Navajo County	9,949	9	9,959
5	Maricopa County	9,202	24	9,226
6	Pima County	9,189	2	9,191
7	Yavapai County	8,123	4	8,127
8	Cochise County	6,210	7	6,217
9	Yuma County	5,514	5	5,519
10	Pinal County	5,367	8	5,375
11	Gila County	4,758	37	4,795
12	Graham County	4,622	18	4,640
13	La Paz County	4,497	14	4,511
14	Greenlee County	1,843	5	1,847
15	Santa Cruz County	1,236	1	1,237