Lists of counties in the United States

The following are lists of U.S. counties and county-equivalents by various criteria.

By state

• Alabama
• Alaska boroughs and census areas
• Arizona
• Arkansas
• California
• Colorado
• Connecticut
• Connecticut councils of governments (recognized as county-equivalents under state and federal law since 2022)
• Historical Connecticut counties
• Delaware
• Florida
• Georgia
• Hawaii
• Idaho
• Illinois
• Indiana
• Iowa
• Kansas
• Kentucky
• Louisiana parishes
• Maine
• Maryland
• Massachusetts
• Michigan
• Minnesota
• Mississippi
• Missouri
• Montana
• Nebraska
• Nevada
• New Hampshire
• New Jersey
• New Mexico
• New York
• North Carolina
• North Dakota
• Ohio
• Oklahoma
• Oregon
• Pennsylvania
• Rhode Island
• South Carolina
• South Dakota
• Tennessee
• Texas
• Utah
• Vermont
• Virginia
• Washington
• West Virginia
• Wisconsin
• Wyoming

In U.S. territories and federal district

The United States Census Bureau also divides the U.S. territories and the District of Columbia into county-equivalents:

• American Samoa's districts and atolls
• Guam is counted as a single county-equivalent
• Northern Mariana Islands municipalities
• Puerto Rico municipalities
• Each main island of the U.S. Virgin Islands
• Each island of the United States Minor Outlying Islands
• Washington, D.C. is counted as a single county-equivalent

By name

By name origin

By demographics

By geography

References