66023 is zip code located in Effingham, Kansas. The population is 1,263, making 66023 the largest zipcode in Effingham and the 2nd largest in Atchison County.
There are 2 public schools in 66023 with an average Homefacts rating of C+. , and there are 6 registered sex offenders residing in the zip code 66023. Unemployment in 66023 is moderate.