City Distance Database - Place Distance Database
City Distances are great-circle distances
calculated using the Haversine formula
based on internal points in the geographic area.
are from Census 2000 SF1 and
Census 2010 SF1 files.
Places "usually [are] a city, town, village, or borough, but can have other legal descriptions."
The size of the file increases with the radius.
Smaller files (<= 25 or <= 50 miles) may be easier to use
if only distances <= 25 or <= 50 miles respectively are needed.
The ∞ has all combinations of counties.
Updates and changes.
Contact email@example.com with questions, comments, or suggestions.
|Last Update: March 31, 2016
||Created by Jean Roth June 17, 2014|