According to the
United States Census Bureau, the town has a total area of , of which is land and , or 3.53%, is water. Monterey is bordered by
Tyringham to the north,
Otis to the east,
Sandisfield to the southeast,
New Marlborough to the south, and
Great Barrington to the west. Monterey lies south-southeast of
Pittsfield, west of
Springfield, and west of
Boston. Monterey lies in the southern end of
the Berkshires, at the headwaters of the
Konkapot River. The river rises from Lake Garfield, which is surrounded by several hills, and
Lake Buel, which lies along the New Marlborough town line. Much of the northwest corner of town is dominated by Mount Wilcox and the lower portion of
Beartown State Forest. The state forest is crossed by the
Appalachian Trail, which crosses from Great Barrington, below the peak of the mountain, and on to Sky Hill in Tyringham. Monterey lies along
Massachusetts Route 23, the main east-west route through town. Near the Great Barrington line,
Route 57 begins and heads eastward, passing Lake Buel before heading into New Marlborough. Route 57 also carries
Route 183, which is combined with Route 23 west of the junction, southward towards Connecticut. There are also several non-state highways which connect the town to its other neighbors. Most of the population is centered around Route 23, especially near Lake Garfield. The nearest interstate,
Interstate 90 (the
Massachusetts Turnpike), passes through neighboring Otis, and its nearest exit is at
U.S. Route 20 in Lee. The nearest regional rail and bus service is at Great Barrington, which is at the end of a weekend service line to
New York City via the
MTA rail line (note: this refers to a discontinued connecting bus service to GB from the MTA's Wassaic, NY station).
Amtrak service can also be found in Pittsfield, along the east-west
Lake Shore Limited. There is a small regional airport in Great Barrington, The Walter J Koladza Airport, but it is limited to private flights and scenic tours. The nearest national air service at
Bradley International Airport in
Windsor Locks, Connecticut. ==Demographics==