Glad to hear the
calculator is proving useful to you! We use it often, ourselves!
There are some enhancements it still needs, not the least of which is updating it to support instances where a city's name occurs more than once in a state... there are plenty of examples in Texas, alone (example: there are 6 or more "Lakeview"'s in Texas, each in a different county).
The same functionality will eventually be tied into our
Parks Search feature. Another "to do" on my list here.