13803 is zip code located in Marathon, New York. The population is 4,131, making 13803 the largest zipcode in Marathon and the 3rd largest in Cortland County.
There are 2 public schools in 13803 with an average Homefacts rating of C+. , and there are 7 registered sex offenders residing in the zip code 13803. Unemployment in 13803 is moderate.