An easy way to find out what licenses are around a location is to do a radius search.
First, head to the FCC GenMen Site search: FCC General Menu Reports
Going down the page:
On the Service Selection drop-down: Specific Services Only
Check: Land Mobile - Private
Under Location Search Method: Point Radius
Under Radius: Start with 1 Km / 0.5 Mi
Go to a geocoder site:
DMS - Decimal converter
Put in address, city, state. Then put the degrees-minutes-seconds into Location Specification on the FCC page.
Hit Submit Query!
Using "Land Mobile - Private" screens out a lot of the pager and cell licenses.
You can also put in a frequency range to limit your search.
Start with a small radius and then you can move outwards from there.
Keep in mind that the lat/lon filled in on FCC applications is sometimes wrong!