| download_zip_data | Download updated data files needed for library functionality to the package's data directory. To be implemented for future updates. |
| geocode_zip | Returns that lat / lon pair of the centroid of a given ZIP code |
| get_cd | Get all congressional districts for a given ZIP code |
| get_tracts | Get all Census tracts within a given ZIP code |
| is_zcta | Returns true if the given ZIP code is also a ZIP code tabulation area (ZCTA) |
| normalize_zip | Normalize ZIP codes |
| reverse_zipcode | Given a ZIP code, returns columns of metadata about that ZIP code |
| search_cd | Get all ZIP codes that fall within a given congressional district |
| search_city | Search ZIP codes for a given city within a state |
| search_county | Search ZIP codes for a county |
| search_fips | Returns all ZIP codes found within a given FIPS code |
| search_radius | Search for ZIP codes that are within a given radius from a point |
| search_state | Search for ZIP codes located within a given state |
| search_tz | Search all ZIP codes located within a given timezone |
| zcta_crosswalk | ZCTA to Census Tract (2010) Crosswalk |
| zip_code_db | ZIP Code Database |
| zip_distance | Calculate the distance between two ZIP codes in miles |
| zip_to_cd | ZIP Code to Congressional District Relationship File |