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According to the U.S. 2010 Census, Montgomery County is the most populated county in Maryland.
Fredrick county is Marylands largest with an overall size of 663 square miles.
Frederick Prince Georges Montgomery Charles County Baltimore
Inyo County
Nye County, population 38,180, is the second largest county in the United States!
In area, Perkins County is the second largest county in South Dakota with a total area of 2,891 square miles. In population, Pennington County is the second largest county in South Dakota with a total population of 100,948 (2010 Census).
No. Galway is the second largest county in Ireland. Laois is much smaller and is only the 23rd largest of the 32 counties.
Robeson County
Frederick county by 663 and for more information on every state go to classbrain.com
The second largest county in the lower 48 states is Coconino County in Arizona. It covers an area of about 18,661 square miles.
Meath.
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.