Zip Code Listings for Rockville, Maryland The following are the areas codes and zip codes for Rockville, Maryland 20847 (area code: 301)
20848 (area code: 301)
20849 (area code: 301)
20850 (area code: 301)
20851 (area code: 301)
20852 (area code: 301)
20853 (area code: 301)
20854 (area code: 301)
20855 (area code: 301)
20857 (area code: 301)
20859 (area code: 301)