99350 is zip code located in Prosser, Washington. The population is 12,962, making 99350 the largest zipcode in Prosser and the 6th largest in Benton County.
There are 6 public schools in 99350 with an average Homefacts rating of B. The total crime rate for Prosser is very low , and there are 7 registered sex offenders residing in the zip code 99350. Unemployment in 99350 is very high.