Challenge–Brownsville is a census-designated place (CDP) in Yuba County, California, United States.

Despite strong opposition from local community members, Asatru Folk Assembly, a white supremacist religious group, moved there in 2015.

[3] According to the United States Census Bureau, the CDP has a total area of 9.7 square miles (25 km2), all of it land.

130 households (27.3%) were made up of individuals, and 59 (12.4%) had someone living alone who was 65 years of age or older.

There were 594 housing units at an average density of 61.5 per square mile (23.7/km2), of which 339 (71.2%) were owner-occupied, and 137 (28.8%) were occupied by renters.

There were 580 housing units at an average density of 60.0 per square mile (23.2/km2).

29.5% of all households were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older.

In the California State Legislature, Challenge–Brownsville is in the 4th Senate District, represented by Republican Marie Alvarado-Gil, and in the 3rd Assembly District, represented by Republican James Gallagher.