Northrop Ct, Smithtown
- 4 Northrop Ct Mangan, Robert/Jaime
- 6 Northrop Ct Flanagan Fam Trst, Mary F
- 8 Northrop Ct Franzese, Anthony/Maddeline
- 10 Northrop Ct Zeller Life Estate, Gabrielle
- 12 Northrop Ct Perciballi, Edward/Maryann
- 14 Northrop Ct Firo, Tahir M
- 16 Northrop Ct Varro, Gregory E
- 18 Northrop Ct Pisano, Rosario/Elizabeth