99349 is zip code located in Mattawa, Washington. The population is 7,689, making 99349 the largest zipcode in Mattawa and the 4th largest in Grant County.
There are 8 public schools in 99349 with an average Homefacts rating of C-. , and there are 0 registered sex offenders residing in the zip code 99349. Unemployment in 99349 is very high.