Plotting | Blank US state map | Blank US county map | Raw map data | FIPS codes | State/County FIPS lookup | FIPS reverse lookup | Further reading

Extending plot_usmap with ggplot2 | Plot only certain states | Add some data to the map | Change fill color scale | Show data in certain states | Required Data Format | FIPS column with default values column | FIPS column with custom values column | States | Counties | Built-in Regions | Supported US Census Regions and Divisions | Raw map data

Labels | ggplot2 aesthetic mapping parameters | Transform data frames to match usmap projection | Projection | Example: earthquakes | Example: most populous city in each state | Example: major rivers in the United States