Distance Search DB
From Open-Realty Wiki
If you want to be able to perform a radius distance search with Open-Realty then you will need to populate the "zipdist" database table in your Open-Realty database.
For setting up this feature we used zip code and lat/long data provided by http://www.zipcodedownload.com/
The package you will want to get would be the USA - 5-digit ZIP Code Database, Premium Edition.
Zip code and Lat/Long data from other providers SHOULD be compatible but you may have to do some manipulation of their data format to import it into Open-Realty.
