download_comprehensive_data
                        Download the comprehensive ZIP code database
download_zip_data       Legacy in-place data downloader
download_zip_data_bundle
                        Download a versioned zipcodeR data bundle
geocode_zip             Returns that lat / lon pair of the centroid of
                        a given ZIP code
geocode_zip_ng          Geocode ZIP codes using an explicit data bundle
get_cd                  Get all congressional districts for a given ZIP
                        code
get_cd_ng               Get congressional districts using an explicit
                        data bundle
get_tracts              Get all Census tracts within a given ZIP code
get_tracts_ng           Get Census tracts using an explicit data bundle
is_zcta                 Returns true if the given ZIP code is also a
                        ZIP code tabulation area (ZCTA)
is_zcta_ng              Test ZCTA membership using an explicit data
                        bundle
normalize_zip           Normalize ZIP codes
normalize_zip_ng        Normalize ZIP codes with corrected boundary
                        behavior
read_zip_data_bundle    Read a versioned zipcodeR data bundle
reverse_zipcode         Given a ZIP code, returns columns of metadata
                        about that ZIP code
reverse_zipcode_ng      Reverse-geocode ZIP codes using an explicit
                        data bundle
search_cd               Get all ZIP codes that fall within a given
                        congressional district
search_cd_ng            Search a congressional district using an
                        explicit data bundle
search_city             Search ZIP codes for a given city within a
                        state
search_city_ng          Search a city using an explicit data bundle
search_county           Search ZIP codes for a county
search_county_ng        Search a county using an explicit data bundle
search_fips             Returns all ZIP codes found within a given FIPS
                        code
search_fips_ng          Search FIPS codes using an explicit data bundle
search_radius           Search for ZIP codes that are within a given
                        radius from a point
search_radius_ng        Search within a radius using an explicit data
                        bundle
search_state            Search for ZIP codes located within a given
                        state
search_state_ng         Search a state using an explicit data bundle
search_tz               Search all ZIP codes located within a given
                        timezone
search_tz_ng            Search a timezone using an explicit data bundle
zcta_crosswalk          ZCTA to Census Tract (2010) Crosswalk
zip_code_db             ZIP Code Database
zip_data_provenance     Inspect the provenance supplied with a zipcodeR
                        data bundle
zip_data_version        Report zipcodeR data-version metadata
zip_distance            Calculate the distance between two ZIP codes in
                        miles
zip_distance_ng         Calculate ZIP-to-ZIP distance using an explicit
                        data bundle
zip_to_cd               ZIP Code to Congressional District Relationship
                        File
