4 packages on CRAN
Geographic, use, and property related data on airports.
Race results of the Cherry Blossom Run, which is an annual road race that takes place in Washington, DC.
Supplemental functions and data for 'OpenIntro' resources, which includes open-source textbooks and resources for introductory statistics (<https://www.openintro.org/>). The package contains data sets used in our open-source textbooks along with custom plotting functions for reproducing book figures. Note that many functions and examples include color transparency; some plotting elements may not show up properly (or at all) when run in some versions of Windows operating system.
Demographic data on the United States at the county and state levels spanning multiple years.