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VSys lets you find people by their geographic proximity as well. Use this to bring up people, for example, within ten miles of your upcoming event. Type in one or more postal codes, separated by commas, then set the Distance and Units (miles or kilometers). To limit the results to only people in a specific state, enter that State/province value.
This search only works if your zips table is up-to-date. If you don't get the results you expected, ask your system administrator to go to the Administrator tools panel from the main VSys screen and click on Check for zip/postal code updates. This will let him download the latest US zip codes or Canadian postal codes database.
How does this work? VSys doesn't know the latitude/longitude coordinates of every address of every person, but it does know these values for most zip codes and postal codes. To determine how far someone is from a point, it uses the center of the person's postal code and compares it to the center of the postal code(s) that you enter. It's less accurate for large rural postal codes that cover a lot of area, and is more accurate for metropolitan areas.