Maricopa.
Maricopa County.
Maricopa county
Maricopa is the largest in population. Coconino County is the largest in area and the County Seat is Flagstaff.
Navajo County, AZ is the 9th largest of the 15 counties in the state of Arizona. As of the most recent census, the population of Navajo County was 107,322.
New York's largest county by population is Kings County. At the 2010 Census, the population of Kings County was 2,504,700. The second largest county is Queens County with a population of 2,230,722.
Marion County, which encompasses the city of Indianapolis, has the largest population in Indiana.
Based on population, Tucson is the second largest city in Arizona. Tucson's population was 520,116 per the 2010 U.S. census. Phoenix is the largest city in Arizona with population of 1,445,632 per the 2010 U.S. census.
SIZE: The largest Minnesota county by size is St. Louis County (6,226 square miles). POPULATION: The largest Minnesota county by population is Hennepin County (population of 1,116,200).
St. Louis County is the largest county by population in Missouri, with over 1 million residents.
The largest county in New Mexico is Catron County, with 6,928 square miles of space.
Shelby is the largest county in Tennessee based on both population and on area. As of the 2010 census, Shelby County had a population of 927,644. Davidson County is the second largest county in Tennessee with a population of 569,891.
Nye County, population 38,180, is the second largest county in the United States!