63640 is zip code located in Farmington, Missouri. The population is 26,864, making 63640 the largest zipcode in Farmington and the largest in St. Francois County.
There are 11 public schools in 63640 with an average Homefacts rating of A-. The total crime rate for Farmington is moderate , and there are 162 registered sex offenders residing in the zip code 63640. Unemployment in 63640 is moderate.