Portland is a borough in Northampton County, Pennsylvania, United States. Portland is located in the Lehigh Valley region of the state. It is part of Pennsylvania's Slate Belt.
The population of Portland was 579 at the 2000 census.
Portland is located at 40°55′14″N 75°5′52″W / 40.92056°N 75.09778°W / 40.92056; -75.09778 (40.920622, -75.097738).