78566 is zip code located in Los Fresnos, Texas. The population is 17,151, making 78566 the largest zipcode in Los Fresnos and the 7th largest in Cameron County.
There are 6 public schools in 78566 with an average Homefacts rating of B+. The total crime rate for Los Fresnos is very low , and there are 48 registered sex offenders residing in the zip code 78566. Unemployment in 78566 is high.