20794 -- U.S. ZIP code Municipality (1990): JESSUP, Maryland All ZIPs for this municipality (1990): 20794 Population (2000): 15797 Housing Units (2000): 3398 Land area (2000): 12.723179 sq. miles (32.952882 sq. km) Water area (2000): 0.001019 sq. miles (0.002639 sq. km) Total area (2000): 12.724198 sq. miles (32.955521 sq. km) Located within: Maryland (MD) Location: 39.144807 N, 76.787671 W