Phoenix is an unincorporated community located in Baltimore County in the State of Maryland, United States. It is located at latitude 39°30'59" North, longitude 76°36'59" West. The United States Postal Service has assigned Phoenix the ZIP code 21131. Part of the area is also known as Jacksonville, although Jacksonville was once a separate community to the east. Hunt Valley Golf Club, a 36-hole private golf course, is located in Phoenix.