ZIP Code 20620 - Callaway Maryland - Zipdatamaps Explore ZIP Code 20620 in Callaway, MD — interactive map, demographics, housing data, income levels, schools, and local area information for residents and businesses
20620 Real Estate Homes For Sale - Zillow Zillow has 22 homes for sale in 20620 View listing photos, review sales history, and use our detailed real estate filters to find the perfect place
20620, MD Zip Code Map - MapQuest View a map of the businesses, restaurants, and shopping in zip code 20620, Callaway, MD Read reviews and get directions to where you want to go
20620 Zip Code (Maryland) Profile - homes, apartments, schools . . . According to our research of Maryland and other state lists, there were 3 registered sex offenders living in 20620 zip code as of January 21, 2026 The ratio of all residents to sex offenders in zip code 20620 is 450 to 1