Plimptonville is a flag stop commuter rail station along the MBTA Commuter Rail Franklin Line, located in Walpole, Massachusetts near the Neponset River. It is positioned next to a small dirt parking lot between Plimpton Street and the Franklin Line itself. East of the station, Plimpton Street crosses under the tracks beneath a 12-foot bridge before crossing over the Neponset River on Plimpton Pond.It receives the least service of any MBTA station, with just one round trip per day, consisting of an inbound morning train and an outbound evening train at the height of rush hour. Ridership on that round trip averaged just 13 passengers daily by a 2013 count.HistoryThe Norfolk County Railroad was built through East Walpole beginning in 1846; it opened in 1849. A station was opened between East Walpole and Walpole proper then or soon afterwards. Originally known as Tiltons (or Tilton) station, it was later called Plymptons. By the early 20th century, the name had settled on Plimptonville, by which it is known today. The station's most famous user was Joseph N. Welch, who lived in Walpole while working at a Boston law firm.Under MBTA operations, the station has become less important due to its lack of parking and proximity to the well-used Walpole station. Additionally, the station is in the middle of a single-track section of the line, severely limiting the number of trains that can stop. Today, the single round-trip serves a small but dedicated contingent of riders. Ridership counts reached as low as three passengers per day in 2005, with a significant yearly variation.