33411 -- U.S. ZIP code Municipality (1990): ROYAL PALM BEACH, Florida All ZIPs for this municipality (1990): 33411 Population (2000): 41637 Housing Units (2000): 16935 Land area (2000): 43.981869 sq. miles (113.912512 sq. km) Water area (2000): 0.568247 sq. miles (1.471752 sq. km) Total area (2000): 44.550116 sq. miles (115.384264 sq. km) Located within: Florida (FL) Location: 26.719596 N, 80.220774 W