How can I find a list of the GPS coordinates of the geographic center of each US county?
If you have ArcGIS Desktop, you can follow the directions below and it will take about 5 minutes.
- Download US Counties from ESRI
- Follow ESRI's instruction at HowTo: Find the centroid of polygons using Calculate Geometry
- This results in a table of Latitude and Longitude attributes as well as points for the centers on your map.
I found this wikipedia page very helpful: https://en.wikipedia.org/wiki/User:Michael_J/County_table It shows a list of all us counties with their center coordinates (and a lot more information).
The county features in the geodatabases found here contain two columns (INTPTLAT and INTPTLON) that represent the centroid of the county. I used several state geodatabases but have not attempted to verify the accuracy of the centroids listed.
Use Google Geocoding API: https://developers.google.com/maps/documentation/geocoding/intro
Search ", county"
This returns the lat / long of the geographic center from what I can tell.
You can also use the data which is provided by United States government in here.
Although for using it you need to clean it first. Some counties names are not correctly written as they consist of non-English alphabets.