Maricopa is the largest in population. Coconino County is the largest in area and the County Seat is Flagstaff.
The five largest counties by land area in the United States are San Bernardino County (California), Coconino County (Arizona), Nye County (Nevada), Elko County (Nevada), and Mohave County (Arizona).
The second largest county in the lower 48 states is Coconino County in Arizona. It covers an area of about 18,661 square miles.
The most populated city is Phoenix. The largest county by area is Coconino.
Maricopa County.
Maricopa county
Maricopa.
Catron County on the Arizona border.
Coconino County: 18,661 square miles.
Arizona is the 6th largest US State by area.
The sixth largest state in the US by area is Arizona.
coconino county with 18,661 sq mi