Index of U.S. counties

Every state in the United States has subdivisions. In 48 of the states, they are called Counties, in Alaska, they are called boroughs and census areas, and in Louisiana they are called parishes. In most states, a county performs some services for local residents such as police or fire departments in areas where there are no city governments or where cities contract with a county. In some states (Connecticut and Rhode Island) the county has been essentially eliminated except as a named place. In Virginia, 39 cities, and in three other states (Maryland, Missouri and Nevada), certain city governments (Baltimore, St. Louis and Carson City, Respectively) have been made the functional equivalent of counties; these are known as Independent Cities. There are also some locations (Denver and San Francisco) where a city and county government are coextensive, and are known as a City and County.

The map below may be clicked on the particular state or circle representing the state to go to the list of counties for that state, or you may use the text links in the box to the right of the map. Note that District of Columbia County is the only county in Washington, DC, so no link for it is present.