63664 is zip code located in Potosi, Missouri. The population is 8,230, making 63664 the largest zipcode in Potosi and the largest in Washington County.
There are 5 public schools in 63664 with an average Homefacts rating of B-. The total crime rate for Potosi is high , and there are 48 registered sex offenders residing in the zip code 63664. Unemployment in 63664 is moderate.