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Gps2zip
Convert GPS latitude longitude pairs to a US zip code.
Quick Start
npm install gps2zip
Usage
var gps = require('gps2zip'); var latitude = 30.2669; var longitude = 97.7428; gps.gps2zip(latitude, longitude); // returns 78701
Unit tests
node test/basic.js
Accuracy
The output is approximate. The source data is just a list of coordinates, not actual boundaries. The algorithm just finds the minimum euclidean distance between the point in question and the known points. No error checking for points outside the United States.
Related
You can get full street addresses using the Google Maps Reverse Geocoding API: http://code.google.com/apis/maps/documentation/javascript/geocoding.html#ReverseGeocoding
Credit
Zip codes from US Census Bureau (Census.gov › Geography › Maps & Data › Gazetteer Files › 2017 U.S. Gazetteer Files) http://www.census.gov/geo/maps-data/data/gazetteer2017.html