US Zip Codes 
=============

Zip codes and other information of cities in the US.

Columns

* 0: Zip code
* 1: Latitude
* 2: Longitude
* 3: City
* 4: State
* 5: County

Dowloaded from <https://www.gaslampmedia.com/download-zip-code-latitude-longitude-city-state-county-csv/> on 2017-09-10.

Cleanup by Samuel A. Rebelsky on 2017-09-11: Removed quotation marks from
around some longitudes.  Those should be treated as numbers, not strings.

Cleanup by Samuel A. Rebelsky on 2017-09-12: "Federated States of Micro"
should be "Federated States of Micronesia".