| Zip Code | Primary City | Secondary City | | 17050 | Mechanicsburg | Hampden Township, Defense Depot, Goodhope, Hampden Station, Hogestown, Mech, Mechancsbrg, Mechbg, Navy Ships, Navy Sup Dpt, Trindle Sprg, Wertzville, Hampden Twp, Silver Spg Tp, Silver Spring Township |
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