Following the Louisiana Purchase and the admittance of Louisiana into the United States in 1812, five counties were formed out of the Missouri Territory at the first general assembly: Cape Girardeau, …

Nov 20, 2025 · This list contains all the 50 states and the number of counties in each. Texas (254) has the most number of counties while Delaware (3) has the least.

This US county map shows the 3,143 counties and county-equivalent administration areas including parishes, boroughs, census areas, independent cities, and the District of Columbia.

Use the interactive map below to zoom in on any state and view detailed boundaries of each county. Hover or click on a county to reveal its name, major cities, ZIP codes, and more. This map is …

Make your own map of US counties and county equivalents. You can now display the county equivalents for US territories on the map: Puerto Rico, Guam, American Samoa, the US Virgin Islands, and the …

Counties are one of America’s oldest forms of government, dating back to 1634 when the first county governments (shires) were established along the eastern shores of Virginia.

Discover detailed county information for every U.S. state and territory. Browse our directory to explore all regions and counties across the United States.

Dec 28, 2022 · In 2010, there were 3,143 counties or equivalents in the United States. In addition to parishes in Louisiana and boroughs in Alaska, the figure also includes census areas (census areas) …

Feb 10, 2024 · As of 2021, there are a total of 3143 counties and the county-equivalent the United States. The 50 states of the United States are divided into 3,007 counties, political and geographic …

Jul 25, 2025 · Discover tables of the most populous counties and those experiencing population decline.