61604 is zip code located in Peoria, Illinois. The population is 31,481, making 61604 the largest zipcode in Peoria and the 2nd largest in Peoria County.
There are 13 public schools in 61604 with an average Homefacts rating of C-. The total crime rate for Peoria is very high , and there are 1 registered sex offenders residing in the zip code 61604. Unemployment in 61604 is high.