99403 is zip code located in Clarkston, Washington. The population is 19,880, making 99403 the largest zipcode in Clarkston and the largest in Asotin County.
There are 10 public schools in 99403 with an average Homefacts rating of B-. , and there are 22 registered sex offenders residing in the zip code 99403. Unemployment in 99403 is moderate.