| Name | Town | County | Year Acquired | Acreage | Description |
| Governor Oliver Ames Estate | Easton 42°04′13″N 71°06′07″W / 42.0703°N 71.1020°W / 42.0703; -71.1020 (Oliver Ames Estate) | Bristol | 2012 | 36 acres (15 ha) | First home to Governor Oliver Ames |
| Appleton Farms | Hamilton / Ipswich 42°39′23″N 70°50′42″W / 42.6565°N 70.8450°W / 42.6565; -70.8450 (Appleton Farms) | Essex | 1998 | 658 acres (266 ha) | One of the oldest working farms in the United States |
| Appleton Farms Grass Rides | Hamilton 42°39′23″N 70°50′42″W / 42.6565°N 70.8450°W / 42.6565; -70.8450 (Appleton Farms Grass Rides) | Essex | 1970 | 259 acres (105 ha) | |
| Armstrong-Kelley Park | Osterville 41°37′43″N 70°22′50″W / 41.62867°N 70.38051°W / 41.62867; -70.38051 (Armstrong-Kelley Park) | Barnstable | 2021 | 8.5 acres (3.4 ha) | |
| Ashintully Gardens | Tyringham 42°12′57″N 70°22′49″W / 42.2159°N 70.3804°W / 42.2159; -70.3804 (Ashintully Gardens) | Berkshire | 1996 | 120 acres (49 ha) | |
| Ashley House | Sheffield 42°03′34″N 73°21′18″W / 42.0594°N 73.3551°W / 42.0594; -73.3551 (Ashley House) | Berkshire | 1972 | 1 acre (0.40 ha) | |
| Bartholomew's Cobble | Sheffield 42°03′27″N 73°21′03″W / 42.0575°N 73.3508°W / 42.0575; -73.3508 (Bartholomew's Cobble) | Berkshire | 1946 | 329 acres (133 ha) | |
| Bear Swamp | Ashfield 42°32′57″N 72°49′31″W / 42.5491°N 72.8253°W / 42.5491; -72.8253 (Bear Swamp) | Franklin | 1968 | 285 acres (115 ha) | |
| Bear's Den | New Salem 42°32′29″N 72°19′30″W / 42.5415°N 72.3251°W / 42.5415; -72.3251 (Bear's Den) | Franklin | 1968 | 6 acres (2.4 ha) | Wikimedia Commons has media related to Bear's Den. |
| Becket Historic Quarry & Forest | Becket 42°15′05″N 73°01′12″W / 42.25142°N 73.02011°W / 42.25142; -73.02011 (Historic Quarry & Forest) | Berkshire | 2021 | 280 acres (110 ha) | |
| Francis William Bird Park | Walpole 42°09′35″N 71°12′54″W / 42.1597°N 71.2150°W / 42.1597; -71.2150 (Francis William Bird Park) | Norfolk | 2003 | 89 acres (36 ha) | |
| Eleanor Cabot Bradley Estate | Canton 42°12′42″N 71°07′11″W / 42.2116°N 71.1198°W / 42.2116; -71.1198 (Eleanor Cabot Bradley Estate) | Norfolk | 1991 | 90 acres (36 ha) | |
| The Brickyard | Chilmark 41°22′38″N 70°44′39″W / 41.3772°N 70.744268°W / 41.3772; -70.744268 (The Brickyard) | Dukes | 2014 | 20 acres (8.1 ha) | |
| Bridge Island Meadows | Millis 42°11′31″N 71°20′46″W / 42.192°N 71.346°W / 42.192; -71.346 (Bridge Island Meadows) | Norfolk | 1974 | 80 acres (32 ha) | |
| Brooks Woodland Preserve | Petersham 42°28′26″N 72°09′32″W / 42.4738°N 72.1589°W / 42.4738; -72.1589 (Brooks Woodland Preserve) | Worcester | 1975 | 558 acres (226 ha) | |
| William Cullen Bryant Homestead | Cummington 42°28′17″N 72°56′26″W / 42.4713°N 72.9406°W / 42.4713; -72.9406 (William Cullen Bryant Homestead) | Hampshire | 1927 | 195 acres (79 ha) | |
| Bullitt Reservation | Ashfield 42°30′08″N 72°45′21″W / 42.50226°N 72.75590°W / 42.50226; -72.75590 (Bullitt Reservation) | Franklin | 2010 | 265 acres (107 ha) | |
| Cape Poge Wildlife Refuge | Edgartown 41°25′08″N 70°27′06″W / 41.4188°N 70.4518°W / 41.4188; -70.4518 (Cape Poge Wildlife Refuge) | Dukes | 1959 | 516 acres (209 ha) | |
| Castle Hill | Ipswich 42°41′06″N 70°46′45″W / 42.6851°N 70.7792°W / 42.6851; -70.7792 (Castle Hill) | Essex | 1949 | 165 acres (67 ha) | |
| Cedariver | Millis 42°09′27″N 71°20′06″W / 42.1576°N 71.3351°W / 42.1576; -71.3351 (Cedariver) | Norfolk | 2004 | 55 acres (22 ha) | |
| Chapel Brook | Ashfield 42°28′57″N 72°45′36″W / 42.4825°N 72.76°W / 42.4825; -72.76 (Chapel Brook) | Franklin | 1964 | 173 acres (70 ha) | |
| Charles River Peninsula | Needham 42°15′23″N 71°16′00″W / 42.2564°N 71.2667°W / 42.2564; -71.2667 (Charles River Peninsula) | Norfolk | 1960 | 30 acres (12 ha) | |
| Chase Woodlands | Dover 42°14′02″N 71°19′22″W / 42.2339°N 71.3228°W / 42.2339; -71.3228 (Chase Woodlands) | Norfolk | 1993 | 85 acres (34 ha) | |
| Chesterfield Gorge | Chesterfield 42°23′35″N 72°52′48″W / 42.3931°N 72.88°W / 42.3931; -72.88 (Chesterfield Gorge) | Hampshire | 1929 | 166 acres (67 ha) | |
| Chestnut Hill Farm | Southborough 42°18′47″N 71°33′25″W / 42.313094°N 71.55708°W / 42.313094; -71.55708 (Chestnut Hill Farm) | Worcester | 2010 | 170 acres (69 ha) | |
| Coolidge Reservation | Manchester-by-the-Sea 42°34′27″N 70°43′43″W / 42.5742°N 70.7286°W / 42.5742; -70.7286 (Coolidge Reservation) | Essex | 1990 | 64 acres (26 ha) | |
| Copicut Woods | Fall River 41°42′18″N 71°03′16″W / 41.705°N 71.0544°W / 41.705; -71.0544 (Copicut Woods) | Bristol | 2002 | 516 acres (209 ha) | |
| Cormier Woods | Uxbridge 42°04′08″N 71°35′38″W / 42.069°N 71.594°W / 42.069; -71.594 (Cormier Woods) | Worcester | 2008 | 175 acres (71 ha) | |
| Cornell Farm | Dartmouth 41°33′25″N 70°57′18″W / 41.55704°N 70.95499°W / 41.55704; -70.95499 (Cornell Farm) | Bristol | 2009 | 130 acres (53 ha) | |
| Coskata-Coatue Wildlife Refuge | Nantucket 41°21′33″N 70°01′08″W / 41.3592°N 70.0189°W / 41.3592; -70.0189 (Coskata-Coatue Wildlife Refuge) | Nantucket | 1974 | 1,117 acres (452 ha) | |
| Crane Beach | Ipswich 42°41′15″N 70°46′11″W / 42.6874°N 70.7696°W / 42.6874; -70.7696 (Crane Beach) | Essex | 1945 | 1,234 acres (499 ha) | |
| Crane Wildlife Refuge | Essex 42°40′27″N 70°45′35″W / 42.6742°N 70.7597°W / 42.6742; -70.7597 (Crane Wildlife Refuge) | Essex | 1974 | 697 acres (282 ha) | |
| Crowninshield Island | Marblehead 42°30′51″N 70°50′33″W / 42.5142°N 70.8426°W / 42.5142; -70.8426 (Crowninshield Island) | Essex | 1955 | 5 acres (2.0 ha) | |
| Mary Cummings Park | Burlington 42°28′38″N 71°11′48″W / 42.47717°N 71.1968°W / 42.47717; -71.1968 (Mary Cummings Park) | Middlessex | 1927 | 216 acres (87 ha) | The park is owned by the City of Boston and managed by the Trustees.[3] |
| DeCordova Sculpture Park and Museum | Lincoln 42°25′52″N 71°18′41″W / 42.43108°N 71.31143°W / 42.43108; -71.31143 (DeCordova Sculpture Park and Museum) | Middlesex | 2019 | 30 acres (12 ha) | Outdoor sculpture park and museum building operated by a separate organization until 2019.[4] |
| Dexter Drumlin | Lancaster 42°26′56″N 71°41′14″W / 42.4489°N 71.6872°W / 42.4489; -71.6872 (Dexter Drumlin) | Worcester | 1999 | 38 acres (15 ha) | |
| Dinosaur Footprints | Holyoke 42°14′30″N 72°37′24″W / 42.2417°N 72.6233°W / 42.2417; -72.6233 (Dinosaur Footprints) | Hampden | 1935 | 8 acres (3.2 ha) | |
| Doane's Falls | Royalston 42°38′56″N 72°12′00″W / 42.649°N 72.200°W / 42.649; -72.200 (Doane's Falls) | Worcester | 1959 | 173 acres (70 ha) | |
| Doyle Reservation | Leominster 42°32′53″N 71°46′27″W / 42.5481°N 71.7742°W / 42.5481; -71.7742 (Doyle Reservation) | Worcester | 1981 | 50 acres (20 ha) | |
| Dry Hill | New Marlborough 42°08′05″N 73°13′36″W / 42.1347°N 73.2267°W / 42.1347; -73.2267 (Dry Hill) | Berkshire | 2000 | 206 acres (83 ha) | |
| Dunes' Edge Campground | Provincetown 42°03′45″N 70°11′10″W / 42.062431°N 70.186234°W / 42.062431; -70.186234 (Dunes’ Edge Campground) | Barnstable | 2013 | 17 acres (6.9 ha) | |
| East Over Reservation | Rochester 41°44′48″N 70°48′30″W / 41.7467°N 70.8083°W / 41.7467; -70.8083 (East Over Reservation) | Plymouth | 2005 | 75 acres (30 ha) | |
| Elliott Laurel | Phillipston 42°29′40″N 72°10′31″W / 42.4944°N 72.1753°W / 42.4944; -72.1753 (Elliott Laurel) | Worcester | 1941 | 33 acres (13 ha) | |
| Farandnear | Shirley 42°34′01″N 71°39′20″W / 42.56702°N 71.65564°W / 42.56702; -71.65564 (Farandnear) | Middlesex | 2011 | 89 acres (36 ha) | |
| The FARM Institute | Edgartown 41°21′42″N 70°31′03″W / 41.3617°N 70.5174°W / 41.3617; -70.5174 (The FARM Institute) | Dukes | Managed since 2016 | 162 acres (66 ha) | |
| Field Farm | Williamstown 42°39′58″N 73°15′40″W / 42.6661°N 73.2611°W / 42.6661; -73.2611 (Field Farm) | Berkshire | 1984 | 316 acres (128 ha) | Wikimedia Commons has media related to Field Farm. |
| Fork Factory Brook | Medfield 42°12′35″N 71°16′28″W / 42.2097°N 71.2745°W / 42.2097; -71.2745 (Fork Factory Brook) | Norfolk | 1966 | 135 acres (55 ha) | |
| Fruitlands Museum | Harvard 42°29′37″N 71°36′47″W / 42.49361°N 71.61306°W / 42.49361; -71.61306 (Fruitlands Museum) | Worcester | 2016 | 210 acres (85 ha) | Fruitlands, a privately owned museum that opened in 1914, was acquired by the Trustees in 2016.[5] Wikimedia Commons has media related to Fruitlands. |
| Gerry Island | Marblehead 42°30′38″N 70°50′33″W / 42.5106°N 70.84263°W / 42.5106; -70.84263 (Gerry Island) | Essex | 2018 | 1.5 acres (0.61 ha) | |
| Glendale Falls | Middlefield 42°21′03″N 72°57′58″W / 42.3508°N 72.9661°W / 42.3508; -72.9661 (Glendale Falls) | Hampshire | 1964 | 1.5 acres (0.61 ha) | |
| Goose Pond Reservation | Lee 42°16′53″N 73°11′39″W / 42.2815°N 73.1941°W / 42.2815; -73.1941 (Goose Pond Reservation) | Berkshire | 1986 | 112 acres (45 ha) | |
| Greenwood Farm | Ipswich 42°41′36″N 70°49′00″W / 42.6933°N 70.8167°W / 42.6933; -70.8167 (Greenwood Farm) | Essex | 1975 | 216 acres (87 ha) | |
| Halibut Point Reservation | Rockport 42°41′28″N 70°37′44″W / 42.6911°N 70.6289°W / 42.6911; -70.6289 (Halibut Point Reservation) | Essex | 1934 | 12 acres (4.9 ha) | Adjacent to Halibut Point State Park |
| Hamlin Reservation | Ipswich 42°40′10″N 70°48′36″W / 42.6694°N 70.81°W / 42.6694; -70.81 (Hamlin Reservation) | Essex | 1993 | 135 acres (55 ha) | |
| Allen C. Haskell Public Gardens | New Bedford 41°39′18″N 70°56′46″W / 41.655°N 70.946°W / 41.655; -70.946 (Allen C. Haskell Public Gardens) | Bristol | 2013 | 6 acres (2.4 ha) | |
| Holmes Reservation | Plymouth 41°58′09″N 70°40′43″W / 41.9692°N 70.6786°W / 41.9692; -70.6786 (Holmes Reservation) | Plymouth | 1944 | 26 acres (11 ha) | |
| Governor Hutchinson's Field | Milton 42°15′56″N 71°03′55″W / 42.2655°N 71.0652°W / 42.2655; -71.0652 (Governor Hutchinson's Field) | Norfolk | 1898 | 10 acres (4.0 ha) | |
| Jacobs Hill | Royalston 42°40′31″N 72°12′10″W / 42.6752°N 72.2028°W / 42.6752; -72.2028 (Jacobs Hill) | Worcester | 1975 | 173 acres (70 ha) | |
| Jewell Hill | Ashby 42°38′13″N 71°51′28″W / 42.6370°N 71.85786°W / 42.6370; -71.85786 (Jewell Hill) | Middlesex | 2020 | 296 acres (120 ha) | |
| Land of Providence | Holyoke 42°09′56″N 72°37′57″W / 42.16565°N 72.6325°W / 42.16565; -72.6325 (Land of Providence) | Hampden | 2009 | 25 acres (10 ha) | |
| Little Tom Mountain | Holyoke 42°14′57″N 72°38′00″W / 42.2491°N 72.6332°W / 42.2491; -72.6332 (Little Tom Mountain) | Hampden | 2002 | 72 acres (29 ha) | |
| Long Hill | Beverly 42°35′07″N 70°50′37″W / 42.5852°N 70.8437°W / 42.5852; -70.8437 (Long Hill) | Essex | 1979 | 114 acres (46 ha) | |
| Long Point Wildlife Refuge | West Tisbury 41°21′38″N 70°38′00″W / 41.3606°N 70.6333°W / 41.3606; -70.6333 (Long Point Wildlife Refuge) | Dukes | 1979 | 632 acres (256 ha) | |
| Lowell Holly | Mashpee / Sandwich 41°40′04″N 70°28′35″W / 41.6677°N 70.4764°W / 41.6677; -70.4764 (Lowell Holly) | Barnstable | 1942 | 135 acres (55 ha) | |
| Lucy Stone Home Site | West Brookfield 42°15′27″N 72°11′18″W / 42.2576°N 72.1884°W / 42.2576; -72.1884 (Lucy Stone Home Site) | Worcester | 2002 | 61 acres (25 ha) | |
| Lyman Reserve | Bourne / Plymouth / Wareham 41°45′50″N 70°37′53″W / 41.7639°N 70.6315°W / 41.7639; -70.6315 (Lyman Reserve) | Plymouth/ Barnstable | 2001 | 210 acres (85 ha) | |
| Malcolm Preserve | Carlisle 42°30′55″N 71°20′36″W / 42.5153°N 71.3433°W / 42.5153; -71.3433 (Malcolm Preserve) | Middlesex | 1998 | 11 acres (4.5 ha) | |
| Mashpee River Reservation | Mashpee 41°37′22″N 70°28′51″W / 41.6228°N 70.4808°W / 41.6228; -70.4808 (Mashpee River Reservation) | Barnstable | 1959 | 248 acres (100 ha) | |
| McLennan Reservation | Otis / Tyringham 42°13′17″N 73°10′29″W / 42.2214°N 73.1747°W / 42.2214; -73.1747 (McLennan Reservation) | Berkshire | 1976 | 594 acres (240 ha) | |
| Medfield Meadow Lots | Medfield 42°12′11″N 71°20′36″W / 42.2031°N 71.3433°W / 42.2031; -71.3433 (Medfield Meadow Lots) | Norfolk | 1968 | 16 acres (6.5 ha) | |
| Medfield Rhododendrons | Medfield 42°10′35″N 71°18′20″W / 42.1764°N 71.3055°W / 42.1764; -71.3055 (Medfield Rhododendrons) | Norfolk | 1934 | 196 acres (79 ha) | |
| Menemsha Hills | Chilmark 41°22′14″N 70°45′05″W / 41.3706°N 70.7514°W / 41.3706; -70.7514 (Menemsha Hills) | Dukes | 1966 | 211 acres (85 ha) | |
| Millborn Farm | Millis 42°11′56″N 71°20′47″W / 42.19893°N 71.346333°W / 42.19893; -71.346333 (Millborn Farm) | Norfolk | 2024 | 195 acres (79 ha) | Not yet open to the public[6] |
| Misery Islands | Salem 42°32′50″N 70°47′53″W / 42.5473°N 70.798°W / 42.5473; -70.798 (Misery Islands) | Essex | 1935 | 87 acres (35 ha) | |
| Mission House | Stockbridge 42°17′00″N 73°18′57″W / 42.2832°N 73.3159°W / 42.2832; -73.3159 (Mission House) | Berkshire | 1948 | 0.5 acres (0.20 ha) | |
| The Monoliths | Manchester-by-the-Sea 42°35′53″N 70°46′01″W / 42.5981°N 70.7669°W / 42.5981; -70.7669 (Agassiz Rock) | Essex | 1957 | 116 acres (47 ha) | Two dramatic examples of glacial erratics; formerly known as Agassiz Rock. |
| Monument Mountain | Great Barrington 42°14′50″N 73°20′27″W / 42.2473°N 73.3407°W / 42.2473; -73.3407 (Monument Mountain) | Berkshire | 1899 | 503 acres (204 ha) | |
| Moose Hill Farm | Sharon 42°07′39″N 71°12′37″W / 42.1275°N 71.2104°W / 42.1275; -71.2104 (Moose Hill Farm) | Norfolk | 2005 | 347 acres (140 ha) | |
| Moraine Farm | Beverly 42°35′11″N 70°53′55″W / 42.5863°N 70.8986°W / 42.5863; -70.8986 (Moraine Farm) | Essex | 2010 | 78 acres (32 ha) | This property was first opened to the public in June 2024.[7] |
| Mount Ann Park | Gloucester 42°36′48″N 70°43′13″W / 42.6134°N 70.7203°W / 42.6134; -70.7203 (Mount Ann Park) | Essex | 1897 | 87 acres (35 ha) | This property has had no public access since the construction of Route 128.[8] |
| Mount Warner | North Hadley 42°22′47″N 72°34′40″W / 42.3797°N 72.5777°W / 42.3797; -72.5777 (Mount Warner) | Hampshire | 1986 | 156 acres (63 ha) | |
| Mountain Meadow Preserve | Williamstown / Pownal, VT 42°44′17″N 73°12′25″W / 42.738°N 73.207°W / 42.738; -73.207 (Mountain Meadow Preserve) | Berkshire/ Bennington | 1998 | 176 acres (71 ha) | |
| Mytoi | Edgartown 41°22′33″N 70°27′31″W / 41.3758°N 70.4586°W / 41.3758; -70.4586 (Mytoi) | Dukes | 1976 | 14 acres (5.7 ha) | |
| Naumkeag | Stockbridge 42°17′23″N 73°18′57″W / 42.2897°N 73.3159°W / 42.2897; -73.3159 (Naumkeag) | Berkshire | 1959 | 48 acres (19 ha) | Wikimedia Commons has media related to Naumkeag. |
| Noanet Woodlands | Dover 42°14′49″N 71°16′08″W / 42.247°N 71.269°W / 42.247; -71.269 (Noanet Woodlands) | Norfolk | 1984 | 695 acres (281 ha) | |
| Noon Hill | Medfield 42°09′29″N 71°18′22″W / 42.158°N 71.306°W / 42.158; -71.306 (Noon Hill) | Norfolk | 1959 | 204 acres (83 ha) | |
| Norris Reservation | Norwell 42°09′35″N 70°47′27″W / 42.1596°N 70.7909°W / 42.1596; -70.7909 (Norris Reservation) | Plymouth | 1970 | 129 acres (52 ha) | |
| North Common Meadow | Petersham 42°29′40″N 72°10′31″W / 42.4944°N 72.1753°W / 42.4944; -72.1753 (North Common Meadow) | Worcester | 1975 | 25 acres (10 ha) | |
| Notchview | Windsor 42°30′19″N 73°02′12″W / 42.5053°N 73.0367°W / 42.5053; -73.0367 (Notchview) | Berkshire | 1965 | 3,108 acres (1,258 ha) | |
| Old Manse | Concord 42°28′06″N 71°20′58″W / 42.4683°N 71.3494°W / 42.4683; -71.3494 (Old Manse) | Middlesex | 1939 | 9 acres (3.6 ha) | |
| Old Town Hill | Newbury 42°46′08″N 70°51′25″W / 42.769°N 70.857°W / 42.769; -70.857 (Old Town Hill) | Essex | 1952 | 531 acres (215 ha) | |
| Peaked Mountain | Monson 42°02′48″N 72°20′23″W / 42.0467°N 72.3397°W / 42.0467; -72.3397 (Peaked Mountain) | Hampden | 1999 | 296 acres (120 ha) | |
| Pegan Hill | Dover / Natick 42°14′53″N 71°18′14″W / 42.2480°N 71.3038°W / 42.2480; -71.3038 (Pegan Hill) | Norfolk / Middlesex | 1956 | 32 acres (13 ha) | |
| Peters Reservation | Dover 42°14′16″N 71°19′36″W / 42.2378°N 71.3267°W / 42.2378; -71.3267 (Peters Reservation) | Norfolk | 1988 | 97 acres (39 ha) | |
| Petticoat Hill | Williamsburg 42°22′54″N 72°44′41″W / 42.3817°N 72.7447°W / 42.3817; -72.7447 (Petticoat Hill) | Hampshire | 1905 | 60 acres (24 ha) | |
| Pierce Reservation | Milton 42°15′58″N 71°03′46″W / 42.2660°N 71.0628°W / 42.2660; -71.0628 (Pierce Reservation) | Norfolk | 1957 | 4 acres (1.6 ha) | |
| Pine and Hemlock Knoll | Wenham 42°36′58″N 70°54′04″W / 42.616°N 70.901°W / 42.616; -70.901 (Pine and Hemlock Knoll) | Essex | 1936 | 14 acres (5.7 ha) | |
| Powisset Farm | Dover 42°13′30″N 71°15′36″W / 42.225°N 71.260°W / 42.225; -71.260 (Powisset Farm) | Norfolk | 1985 | 124 acres (50 ha) | |
| Questing | New Marlborough 42°07′19″N 73°15′06″W / 42.1219°N 73.2518°W / 42.1219; -73.2518 (Questing) | Berkshire | 1996 | 438 acres (177 ha) | |
| Quinebaug Woods | Holland 42°04′11″N 72°09′22″W / 42.0696°N 72.156°W / 42.0696; -72.156 (Quinebaug Woods) | Hampden | 2001 | 36 acres (15 ha) | |
| Ravenswood Park | Gloucester 42°35′40″N 70°41′43″W / 42.5944°N 70.6953°W / 42.5944; -70.6953 (Ravenswood Park) | Essex | 1993 | 600 acres (240 ha) | |
| Redemption Rock | Princeton 42°30′24″N 71°52′11″W / 42.5067°N 71.8697°W / 42.5067; -71.8697 (Redemption Rock) | Worcester | 1953 | 0.25 acres (0.10 ha) | |
| Rock House Reservation | West Brookfield 42°16′11″N 72°11′50″W / 42.2697°N 72.1972°W / 42.2697; -72.1972 (Rock House Reservation) | Worcester | 1993 | 135 acres (55 ha) | |
| Rocky Narrows | Sherborn 42°13′33″N 71°21′15″W / 42.2259°N 71.3542°W / 42.2259; -71.3542 (Rocky Narrows) | Middlesex | 1897 | 227 acres (92 ha) | |
| Rocky Woods | Medfield 42°12′34″N 71°16′34″W / 42.2095°N 71.2762°W / 42.2095; -71.2762 (Rocky Woods) | Norfolk | 1942 | 491 acres (199 ha) | |
| Royalston Falls | Royalston 42°42′52″N 72°14′43″W / 42.7144°N 72.2453°W / 42.7144; -72.2453 (Royalston Falls) | Worcester | 1951 | 217 acres (88 ha) | |
| Shattuck Reservation | Medfield 42°09′53″N 71°19′07″W / 42.1648°N 71.3185°W / 42.1648; -71.3185 (Shattuck Reservation) | Norfolk | 1970 | 245 acres (99 ha) | |
| Signal Hill | Canton 42°11′06″N 71°09′32″W / 42.185°N 71.159°W / 42.185; -71.159 (Signal Hill) | Norfolk | 2005 | 150 acres (61 ha) | |
| Slocum's River Reserve | Dartmouth 41°33′07″N 71°00′33″W / 41.5519°N 71.0092°W / 41.5519; -71.0092 (Slocum's River Reserve) | Bristol | 2000 | 47 acres (19 ha) | |
| Stavros Reservation | Essex 42°39′03″N 70°47′12″W / 42.6508°N 70.7868°W / 42.6508; -70.7868 (Stavros Reservation) | Essex | 1982 | 74 acres (30 ha) | |
| The Stevens-Coolidge Place | North Andover 42°40′53″N 71°07′05″W / 42.6814°N 71.1181°W / 42.6814; -71.1181 (The Stevens-Coolidge Place) | Essex | 1962 | 91 acres (37 ha) | |
| Swift River Reservation | Petersham 42°26′48″N 72°10′51″W / 42.4467°N 72.1808°W / 42.4467; -72.1808 (Swift River Reservation) | Worcester | 1983 | 439 acres (178 ha) | |
| Tantiusques | Sturbridge 42°03′26″N 72°07′52″W / 42.0572°N 72.1311°W / 42.0572; -72.1311 (Tantiusques) | Worcester | 1962 | 57 acres (23 ha) | |
| Tully Lake Campground | Royalston 42°38′41″N 72°12′57″W / 42.6446°N 72.2157°W / 42.6446; -72.2157 (Tully Lake Campground) | Worcester | Managed since 1999[9] | 200 acres (81 ha) | The campground is owned by the United States Army Corps of Engineers and managed by the Trustees.[10] Wikimedia Commons has media related to Tully Lake. |
| Two Mile Farm | Marshfield 42°07′12″N 70°46′00″W / 42.1199°N 70.7666°W / 42.1199; -70.7666 (Two Mile Farm) | Plymouth | 1993 | 68 acres (28 ha) | |
| Tyringham Cobble | Tyringham 42°14′42″N 73°12′33″W / 42.245°N 73.2092°W / 42.245; -73.2092 (Tyringham Cobble) | Berkshire | 1963 | 206 acres (83 ha) | |
| Ward Reservation | Andover / North Andover 42°38′28″N 71°06′21″W / 42.6411°N 71.1058°W / 42.6411; -71.1058 (Ward Reservation) | Essex | 1940 | 695 acres (281 ha) | |
| Wasque | Edgartown 41°21′05″N 70°27′28″W / 41.3514°N 70.4578°W / 41.3514; -70.4578 (Wasque) | Dukes | 1967 | 200 acres (81 ha) | |
| Weir Hill | North Andover 42°41′37″N 71°06′15″W / 42.6936°N 71.1042°W / 42.6936; -71.1042 (Weir Hill) | Essex | 1968 | 194 acres (79 ha) | Wikimedia Commons has media related to Weir Hill. |
| Weir River Farm | Hingham 42°14′24″N 70°51′13″W / 42.24°N 70.8536°W / 42.24; -70.8536 (Weir River Farm) | Plymouth | 1999 | 75 acres (30 ha) | |
| Westport Town Farm | Westport 41°34′49″N 71°04′47″W / 41.5804°N 71.0798°W / 41.5804; -71.0798 (Westport Town Farm) | Bristol | managed since 2007 | 40 acres (16 ha) | The property is owned by the Town of Westport and managed by the Trustees.[11] |
| Whitney and Thayer Woods | Cohasset / Hingham 42°13′54″N 70°50′23″W / 42.2317°N 70.8397°W / 42.2317; -70.8397 (Whitney and Thayer Woods) | Norfolk/ Plymouth | 1933 | 824 acres (333 ha) | |
| World's End | Hingham 42°16′N 70°53′W / 42.27°N 70.88°W / 42.27; -70.88 (World's End) | Plymouth | 1967 | 251 acres (102 ha) | |