North Billerica is an unincorporated village of the town of Billerica, Massachusetts, United States.
In the late 19th and early 20th centuries, there was a building on Station Street, next to the depot, that served as the North Fire Station, Town Hall Annex, and Post Office. The building was called Union Hall. It served North Billerica as the local Social Club with dances and shows being held on the second floor. It closed down in the 1960s after the Fire Station was relocated a mile away to Lowell Street and the Town Hall Annex was closed. The Post Office was moved to the intersection of Old Elm Street, Lowell Street, and Talbot Avenue at the North Billerica Common. This intersection is still referred to as 'Post Office Square' by the town's older residents. The Union Hall was torn down and the land is now part of the train station parking lot.The North Billerica Depot is on the National Register of Historic Places and was completely renovated in 1998. It served as a flag stop on the Boston and Lowell Railroad's main line and was the starting point for the old narrow gauge Billerica and Bedford Railroad. It still serves commuters today as a regular stop on theMBTA's Lowell Line. The area is also home to Iron Horse Park, a former train repair facility.