| Zip Code | Primary City | Secondary City | | 17050 | Mechanicsburg | Mechancsbrg, Defense Depot, Goodhope, Hampden Station, Hogestown, Mech, Mechbg, Navy Ships, Navy Sup Dpt, Trindle Sprg, Wertzville, Hampden Township, Hampden Twp, Silver Spg Tp, Silver Spring Township | | 17055 | Mechanicsburg | Mechancsbrg, Andersontown, Brandtsville, Defense Depot, Lisburn, Locust Point, Mech, Mechbg, Mount Allen, Navy Ships, Navy Sup Dpt, Shepherdstown, Upper Allen, Williams Grv, Winding Hill, Bowmansdale |
|