Jean Roth created the SAS, Stata, and CSV distance files to make the data easier to use.
The size of the file increases with the radius. Smaller files (<= 25 or <= 50 miles) may be easier to use if only County distances <= 25 or <= 50 miles respectively are needed. The ∞ has all combinations of counties.
To report problems or if you have comments or suggestions , e-mail Jean Roth at firstname.lastname@example.org
|Last Update: March 29, 2016||Created by Jean Roth June 11, 2014|