78521 is zip code located in Brownsville, Texas. The population is 90,752, making 78521 the largest zipcode in Brownsville and the largest in Cameron County.
There are 42 public schools in 78521 with an average Homefacts rating of B-. The total crime rate for Brownsville is low , and there are 152 registered sex offenders residing in the zip code 78521. Unemployment in 78521 is high.