The USPS was founded in 1775 and Benjamin Franklin was the first Postmaster General.
Below you'll find any US Post Offices that we've found in Columbia, PA.
2167 Liberty Grove Rd
Colora, MD - 21917
410-658-5743
305 Conowingo Rd
Conowingo, MD - 21918
410-378-2828
21600 New Freedom Rd
Freeland, MD - 21053
410-357-9969
21400 York Rd
Maryland Line, MD - 21105
410-343-3064
645 Happy Ln
Parkton, MD - 21120
410-357-9255
We are slowly building our database of post office locations, hours, photos, comments and helpful descriptions.