how to map latitude/longitude to a specific US county? [closed]

Question

I have a dataframe containing U.S. latitude and longitude coordinates.

I would like to create a variable that shows the respective U.S. county that includes these coordinates.

How can I do that in R/Python?

Thanks!

Answer 1

You could use geopy.

Example from the documentation using Nominatim (Open Street Map):

>>> from geopy.geocoders import Nominatim
>>> geolocator = Nominatim(user_agent="http")
>>> location = geolocator.reverse("52.509669, 13.376294")
>>> print(location.address)
Potsdamer Platz, Mitte, Berlin, 10117, Deutschland, European Union
>>> print((location.latitude, location.longitude))
(52.5094982, 13.3765983)
>>> print(location.raw)
{'place_id': '654513', 'osm_type': 'node', ...}

The raw output has a dict key country, if one can be found.