Thunderbird Bay, Texas

Thunderbird Bay is a census-designated place (CDP) in Brown County in central Texas, United States. The population was 663 at the 2010 census.

Geography
Thunderbird Bay is located in north-central Brown County along the northern arm of Lake Brownwood, a reservoir on Pecan Bayou. By road, the CDP is 20 mi north of Brownwood, the county seat.

According to the United States Census Bureau, the CDP has a total area of 7.6 km2, of which 6.6 km2 is land and 1.0 sqkm, or 13.42%, is water.

2020 census
As of the 2020 United States census, there were 764 people, 357 households, and 141 families residing in the CDP.