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Get Zip codes for Lat/Long Using Google Maps Reverse Geocoding API

The script uses the Google Maps API to reverse geocode latitude and longitude to zip code. The script takes a csv with at least the following 3 columns: 'uniqid', 'lat', and 'long' (See sample input file.) And produces a csv with zip codes appended to the existing columns.

Note that the Google Maps Reverse Geocoding API usage limit is 2,500 queries/IP/day.

Running the Script

Requirements

• Python 2.7.5
• pygeocoder

Usage:

latlong2zip.py [options] input_file

Command line options:

Options:
  -h, --help            show this help message and exit
  -r, --refresh         Refresh query and update Lat/Lon by Google Maps
                        Geocoding API
  -o OUTFILE, --outfile=OUTFILE
                        CSV Output file name (default: output.csv)

Example:

python latlong2zip.py input.csv

The script will produce output.csv with appends a 'zipcode' column to input.csv.

Note The script will terminate with "ERROR: Google Geocoding API usage over limit" if Google Maps (Reverse) Geocoding APIs usage limit of 2,500 queries/IP/day is exceeded.