98237 is zip code located in Concrete, Washington. The population is 4,052, making 98237 the largest zipcode in Concrete and the 7th largest in Skagit County.
There are 5 public schools in 98237 with an average Homefacts rating of C+. , and there are 15 registered sex offenders residing in the zip code 98237. Unemployment in 98237 is very high.