Zip Code 21918 is located in Conowingo, Cecil county in the state of Maryland. 21918 Zip Code is spread between the coordinates of +39.543894 Latitude and -076.049157 Longitude. 21918 Zip Code is part of the 410 area code. There is 1 postal office in zip code 21918 which we have listed below
On the below highlighted section you can find the cities which the US Post Office accepts for ZIP code 21918. Always when you mail a package or a letter, be attentive to mention the preferred or acceptable cities. Using any city in the list of unacceptable cities may result in unforseen delays.