location-database
There are 2 repositories under location-database topic.
midwire/free_zipcode_data
Free US and world-wide postal codes in SQLite and CSV format
ip2location/ip2location-erlang
Use IP2Location geolocation database to lookup the geolocation information with IP2Location Erlang Module. It can be used to determine country, region, city, coordinates, zip code, time zone, ISP, domain name, connection type, area code, weather, MCC, MNC, mobile brand name, elevation, usage type, address type and IAB category that any IP address or hostname originates from.