A data frame with 42,482 rows and 11 columns:
- id
serial integer id (1, 2, 3, .. etc)
- zip_code
5 digit string for zipcode
- state
state abbreviation
- county
county name
- region
region name
- region_id
id for region
- region_name
region name
- pop, modified
undocumented
- latitude, longitude
numeric coordinates for zipcode