According to the Silvermine Community Association, the northern boundary of the neighborhood is Huckleberry Hill Road in both Wilton and New Canaan.
The neighborhood includes both sides of Thayer Drive and Wardwell Drive in New Canaan, Silvermine Road and the streets off it, east of the intersection with Carter Street and Canoe Hill Road.
Carter Street is not in the neighborhood, but all of the streets east of it are.

In Norwalk, the neighborhood includes a bit of New Canaan Avenue near the New Canaan line and Purdy Road, Comstock Hill Avenue and streets off it, Silvermine Avenue just north of its intersection with Bartlett Avenue, Cliffview Drive, James Street and Riverview Drive, Perry Avenue north and west of Route 7 and North Seir Hill Road, south of its intersection with Vespucci Road, which is also in the neighborhood.

In Wilton, the neighborhood includes both sides of Seir Hill Road north to its intersection with Old Boston Road, the west side of Old Boston Road to its intersection with Highfield Road, both sides of Old Boston Road north of that to its intersection with New Canaan Road, the west side of Old Boston Road north of that to Huckleberry Hill Road, and the south side of Huckleberry Hill Road in Wilton and New Canaan.
According to the Silvermine Community Association, the northern boundary of the neighborhood is Huckleberry Hill Road in both Wilton and New Canaan. The neighborhood includes both sides of Thayer Drive and Wardwell Drive in New Canaan, Silvermine Road and the streets off it, east of the intersection with Carter Street and Canoe Hill Road. Carter Street is not in the neighborhood, but all of the streets east of it are.
In Norwalk, the neighborhood includes a bit of New Canaan Avenue near the New Canaan line and Purdy Road, Comstock Hill Avenue and streets off it, Silvermine Avenue just north of its intersection with Bartlett Avenue, Cliffview Drive, James Street and Riverview Drive, Perry Avenue north and west of Route 7 and North Seir Hill Road, south of its intersection with Vespucci Road, which is also in the neighborhood.
In Wilton, the neighborhood includes both sides of Seir Hill Road north to its intersection with Old Boston Road, the west side of Old Boston Road to its intersection with Highfield Road, both sides of Old Boston Road north of that to its intersection with New Canaan Road, the west side of Old Boston Road north of that to Huckleberry Hill Road, and the south side of Huckleberry Hill Road in Wilton and New Canaan.
Silvermine, Connecticut