The main population areas of the Fort Bidwell District are the Town and the Reservation. About 173 square miles (12 miles by 15 miles).
The 2020 Census population of the district is about 224, a slight increase since 2010 (214), with 149 housing units, 96 occupied*. About half are on the Reservation.
* The 96112 ZIP code area is about the same as the District so the 2010 Census numbers are the District numbers. The 2020 Census does not provide ZIP code data, only for the Town and the Reservation seperately, however, the two areas overlap by about 25 percent so they cannot simply be added.