The Topaz Lodge's mailing address is in Gardnerville, which is about 20 minutes away from Topaz Lake. That's the nearest post office to Topaz Lake. It's the same as casinos that occasionally list their address as "Lake Tahoe, NV." There is no Lake Tahoe, NV. South shore casinos are in Stateline, and most north shore casinos are in Crystal Bay.

The chip pictured, from a short-lived bar/restaurant/casino that was near the Topaz Lodge, also listed the city with its mailing address.