Cities/towns in Middlesex, New Jersey

• Cranbury (2 historic properties)
• East Brunswick (2 historic properties)
• Edison (4 historic properties)
• Helmetta (1 historic property)
• Highland Park (3 historic properties)
• Highland Park Borough (1 historic property)
• Jamesburg (2 historic properties)
• Kingstown (1 historic property)
• Metuchen (2 historic properties)
• Metuchen Borough (1 historic property)
• Middlesex (1 historic property)
• Milltown (1 historic property)
• Monmouth Junction (1 historic property)
• New Brunswick (22 historic properties)

• Old Bridge (1 historic property)
• Perth Amboy (8 historic properties)
• Piscataway (6 historic properties)
• Piscataway Township (2 historic properties)
• Plainsboro (1 historic property)
• S. Brunswick Township (1 historic property)
• Sayreville (1 historic property)
• South Amboy (1 historic property)
• South River (1 historic property)
• South River Borough (1 historic property)
• Spotswood (1 historic property)
• Woodbridge (2 historic properties)
• Woodbridge Township (1 historic property)