# Data & Functions for Working with US ZIP Codes

## Documentation for package ‘zipcodeR’ version 0.3.0

- DESCRIPTION file.
- User guides, package vignettes and other documentation.

## Help Pages

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