SSA splits Blair township's 26 ZIP codes among 2 offices: 21 to the Altoona Social Security Office and 5 to the Johnstown Social Security Office. For 5 of them, the assigned office isn't the closest one, so check your ZIP before you go.
ZIP codes 16601, 16602, 16613, 16617, 16625, 16631, 16635, 16636, 16637, 16638, 16641, 16648, 16655, 16657, 16662, 16665, 16670, 16673, 16682, 16693 and 16695 go to the Altoona Social Security Office, 303 Cayuga Ave, Altoona.
ZIP codes 15925, 15938, 15946, 16630 and 16699 go to the Johnstown Social Security Office, 334 Washington St, Suite 225, Johnstown.
Assigned offices from SSA's Office Locator, looked up by ZIP code on October 1, 2026. ZIP codes are those whose area overlaps Blair township (U.S. Census Bureau, 2020 ZIP Code Tabulation Areas). Distance is straight-line, from the center of the ZIP code to the office.