List of the most populous counties by U.S. state

The following is a sortable table of the most populous county in each U.S. state and territory. Counties in bold have a population of at least 1 million.

Table

State	Largest county/parish/municipality	Population (2013 estimate)	County/parish seat or shire town
Alabama	Jefferson	659,479	Birmingham
Alaska	Anchorage	300,950	Anchorage
Arizona	Maricopa	4,009,412	Phoenix
Arkansas	Pulaski	391,284	Little Rock
California	Los Angeles	10,017,068	Los Angeles
Colorado	El Paso	655,044	Colorado Springs
Connecticut	Fairfield	939,904	Bridgeport
Delaware	New Castle	549,684	Wilmington
Florida	Miami-Dade	2,617,176	Miami
Georgia	Fulton	984,293	Atlanta
Hawaii	Honolulu	983,429	Honolulu
Idaho	Ada	416,464	Boise
Illinois	Cook	5,240,700	Chicago
Indiana	Marion	928,281	Indianapolis
Iowa	Polk	451,677	Des Moines
Kansas	Johnson	566,933	Olathe
Kentucky	Jefferson	756,832	Louisville
Louisiana	East Baton Rouge	445,227	Baton Rouge
Maine	Cumberland	285,456	Portland
Maryland	Montgomery	1,016,677	Rockville
Massachusetts	Middlesex	1,552,802	Cambridge and Lowell
Michigan	Wayne	1,775,273	Detroit
Minnesota	Hennepin	1,198,778	Minneapolis
Mississippi	Hinds	244,899	Jackson
Missouri	St. Louis County	1,001,444	Clayton
Montana	Yellowstone	154,162	Billings
Nebraska	Douglas	531,265	Omaha
Nevada	Clark	2,027,868	Las Vegas
New Hampshire	Hillsborough	402,922	Manchester and Nashua
New Jersey	Bergen	925,328	Hackensack
New Mexico	Bernalillo	673,460	Albuquerque
New York	Kings	2,592,149	Brooklyn
North Carolina	Mecklenburg	990,977	Charlotte
North Dakota	Cass	162,829	Fargo
Ohio	Cuyahoga	1,268,154	Cleveland
Oklahoma	Oklahoma	755,245	Oklahoma City
Oregon	Multnomah	759,256	Portland
Pennsylvania	Philadelphia	1,553,165	Philadelphia
Rhode Island	Providence	628,323	Providence
South Carolina	Greenville	474,266	Greenville
South Dakota	Minnehaha	179,640	Sioux Falls
Tennessee	Shelby	940,764	Memphis
Texas	Harris	4,336,853	Houston
Utah	Salt Lake	1,063,842	Salt Lake City
Vermont	Chittenden	158,504	Burlington
Virginia	Fairfax	1,116,897	Fairfax
Washington	King	2,044,449	Seattle
West Virginia	Kanawha	191,275	Charleston
Wisconsin	Milwaukee	956,023	Milwaukee
Wyoming	Laramie	95,809	Cheyenne