Lucy,
If you install the memberlist hack, you can search by location.
I'm trying to find the thread for it; will post back here when I do.
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Okay, in my notes I discovered that the memberlist developed for 6.1 should work with 6.2.1.1
For the Multihack file download, go here -->
Memberlist Multihack For documentation on the Memberlist, go here -->
Read about Memberlist I hope that helps.
[Edited to change the Memberlist link to the one in the 6.1 Finished Mods forum]