Linthicum Heights, MD is a city located in Anne Arundel County, Maryland and has a land area of 6.64 square miles (17.20 km2). The water area for the city is 0.08 square miles or 0.21 km2. There is one unique zip code in Linthicum Heights, Maryland and it is 21090. The area code(s) for Linthicum Heights is 410/443.
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