Brazos is a census-designated place in Rio Arriba County, New Mexico, United States. As of the 2020 census, Brazos had a population of 31.
U.S. Route 64 / U.S. Route 84 passes through Brazos and New Mexico State Road 512 runs along its northern edge. The Los Brazos Historic District, which is listed on the National Register of Historic Places is located in the CDP.
It is within the Chama Valley Independent Schools school district.
According to the U.S. Census Bureau, the community has an area of , all land.