Hello Felix,
As a resident of the greater Community of Tonopah, the persons you need to contact are the Maricopa Sherrif Dept and the Palo Verde Security Dept (since they are soo close). Both are listed in the phone book.
There is talks here of incorpreating and becoming an official City, but it is still on the drawing board. If that happens I'll be sure to let everyone know the Numbers For the Tonopah PD if and when the form.
Have fun and if the scedule of your game works See you there!