Site: http://results.openaddresses.io/

The US file are set up as:

• State Code Folder
  • CountyName.csv

Related Links:

• Is there an open source international GeoCoding database if you only need city level resolution? – https://gis.stackexchange.com/questions/23043/is-there-an-open-source-international-geocoding-database-if-you-only-need-city-l
• OpenStreetMap:
  • Nominatim (geocode one at a time) – https://wiki.openstreetmap.org/wiki/Nominatim
  • Download all data (40 gb compressed but has links to smaller extracts) – https://wiki.openstreetmap.org/wiki/Downloading_data
  • Smaller individual extracts – https://wiki.openstreetmap.org/wiki/Planet.osm#Country_and_area_extracts
• Open Cage – 2500 free queries / day – https://opencagedata.com/pricing
• Location IQ – 10,000 free queries / day – https://locationiq.com/pricing