Jarrettsville, MD is a city located in Harford County, Maryland and has a land area of 23.76 square miles (61.54 km2). The water area for the city is 0.08 square miles or 0.21 km2. There is one unique zip code in Jarrettsville, Maryland and it is 21084. The area code(s) for Jarrettsville is 443/410.
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