List of United States counties and county equivalents

[3] Two hundred thirty-seven other local governments and geographic places are also first-order administrative divisions of their respective state/district/territory, but are not called counties.

The United States Census Bureau refers to the latter as county equivalents.

Since that time, most creations, boundary changes and dissolutions have occurred in Alaska, Virginia, and Connecticut.

Connecticut's eight historical counties continue to exist in name only, and are no longer considered for statistical purposes.

Similarly, the Census Bureau treats 100 subdivisions of the territories of the United States as county equivalents.

An enlargeable map of the 3,143 counties and county equivalents located in the 50 U.S. states and Washington, D.C. as of 2020. The 100 county equivalents in the U.S. territories are not on this map.