R/zip_lookups.r
is_zcta.Rd
Returns true if the given ZIP code is also a ZIP code tabulation area (ZCTA)
is_zcta(zip_code)
A 5-digit U.S. ZIP code
Boolean TRUE or FALSE based upon whether provided ZIP code is a ZCTA by testing whether it exists in the U.S. Census crosswalk data
is_zcta("90210")
#> [1] TRUE
is_zcta("99999")
#> [1] FALSE
is_zcta("07762")
#> [1] TRUE