03257 is zip code located in New London, New Hampshire. The population is 4,411, making 03257 the largest zipcode in New London.
There are 2 public schools in 03257 with an average Homefacts rating of A+. , and there are 0 registered sex offenders residing in the zip code 03257. Unemployment in 03257 is low.
Zip codes within New London include 03233.