National Historic Register properties in Union county/parish, Pennsylvania

• Griffey, Benjamin, House (Allenwood)
• Buffalo Presbyterian Church (Lewisburg)
• Chamberlin Iron Front Building (Lewisburg)
• Halfway Lake Dam (Lewisburg)
• Lewisburg Armory (Lewisburg)
• Lewisburg Historic District (Lewisburg)
• Packwood House-American Hotel (Lewisburg)
• Reading Railroad Freight Station (Lewisburg)
• Slifer House (Lewisburg)
• Hassenplug Bridge (Mifflinburg)
• Hayes Bridge (Mifflinburg)
• Heiss, William A., House and Buggy Shop (Mifflinburg)
• Mifflinburg Historic District (Mifflinburg)
• Spangler, George Christian and Anna Catherine, Farm (Mifflinburg)
• Millmont Red Bridge (Millmont)
• New Berlin Presbyterian Church (New Berlin)
• Old Union County Courthouse (New Berlin)
• Factory Bridge (White Deer)