Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Westborough Town Hall | Building | 91 | Worcester | 42 16 09 N | 071 36 44 W |
| Westbrook | Populated Place | 55 | Hampshire | 42 24 47 N | 072 37 45 W |
| Westbrook Village | Populated Place | 55 | Norfolk | 42 18 00 N | 071 09 13 W |
| Westchester | Populated Place | 235 | Worcester | 42 18 00 N | 071 49 43 W |
| Westdale | Populated Place | 24 | Plymouth | 42 01 13 N | 070 58 58 W |
| Westdale Post Office (historical) | Post Office | 32 | Plymouth | 42 01 15 N | 070 59 07 W |
| Westdale Station (historical) | Locale | 27 | Plymouth | 42 01 15 N | 070 58 53 W |
| Westecch Industrial Park | Locale | 46 | Middlesex | 42 39 38 N | 071 25 41 W |
| Westend Pond | Lake | -7 | Dukes | 41 24 50 N | 070 56 43 W |
| Westend Pond | Lake | 2 | Dukes | 41 27 45 N | 070 47 43 W |
| Westerly Round Rock | Island | 2 | Norfolk | 42 15 40 N | 070 47 41 W |
| Westerly Water Pollution Control Facility | Locale | 74 | Middlesex | 42 20 27 N | 071 36 50 W |
| Western Avenue Baptist Church | Church | 8 | Middlesex | 42 21 54 N | 071 06 46 W |
| Western Avenue Bridge | Bridge | -4 | Middlesex | 42 21 41 N | 071 07 01 W |
| Western Avenue Bridge | Bridge | 3 | Suffolk | 42 21 54 N | 071 07 00 W |
| Western Avenue Shopping Center | Locale | 7 | Suffolk | 42 21 46 N | 071 08 19 W |
| Western Canal | Canal | 31 | Middlesex | 42 38 45 N | 071 18 43 W |
| Western Canal | Canal | 31 | Middlesex | 42 38 43 N | 071 19 01 W |
| Western Canal | Canal | 20 | Middlesex | 42 39 07 N | 071 18 46 W |
| Western Channel | Channel | 0 | Suffolk | 42 26 36 N | 070 57 58 W |
| Western Channel | Gut | -3 | Norfolk | 42 15 45 N | 070 47 18 W |
| Western Harbor | Harbor | 1 | Essex | 42 36 30 N | 070 40 23 W |
| Western Mass Electric Dam | Dam | 69 | Hampden | 42 09 24 N | 072 28 58 W |
| Western Massachusetts Regional Library System | Building | 37 | Hampshire | 42 22 19 N | 072 35 50 W |
| Western New England College | School | 62 | Hampden | 42 06 55 N | 072 31 11 W |
| Western Point | Cape | 1 | Plymouth | 41 59 40 N | 070 38 13 W |
| Western School of Theology | School | 12 | Middlesex | 42 22 36 N | 071 07 26 W |
| Western Somerville Junior High School | School | 12 | Middlesex | 42 24 04 N | 071 07 31 W |
| Western Way | Gut | 0 | Suffolk | 42 19 10 N | 070 59 28 W |
| Westfield | Populated Place | 44 | Hampden | 42 07 30 N | 072 44 58 W |
| Westfield Alliance Church | Church | 59 | Hampden | 42 07 41 N | 072 46 37 W |
| Westfield Assembly of God Church | Church | 40 | Hampden | 42 08 05 N | 072 44 12 W |
| Westfield Brook | Stream | | Berkshire | 42 29 33 N | 072 58 23 W |
| Westfield City Hall | Building | 48 | Hampden | 42 07 15 N | 072 45 14 W |
| Westfield Evangelical Free Church | Church | 77 | Hampden | 42 05 23 N | 072 45 46 W |
| Westfield High School | School | 47 | Hampden | 42 07 28 N | 072 44 48 W |
| Westfield High School | School | 57 | Hampden | 42 07 25 N | 072 45 44 W |
| Westfield Junior High School | School | 47 | Hampden | 42 06 45 N | 072 45 04 W |
| Westfield Middle School | School | 51 | Hampden | 42 06 48 N | 072 45 05 W |
| Westfield Mountain | Summit | 90 | Hampden | 42 08 15 N | 072 49 58 W |
| Westfield Municipal Building | Building | 54 | Hampden | 42 07 14 N | 072 45 17 W |
| Westfield Reservoir | Reservoir | 282 | Hampden | 42 11 24 N | 072 48 43 W |
| Westfield Reservoir Dam | Dam | 291 | Hampden | 42 11 24 N | 072 48 43 W |
| Westfield River | Stream | | Hampden | 42 05 03 N | 072 35 08 W |
| Westfield River Paper Company Dam | Dam | 87 | Hampden | 42 11 18 N | 072 50 58 W |
| Westfield River Reservoir | Reservoir | 36 | Hampden | 42 05 54 N | 072 38 52 W |
| Westfield River Reservoir | Reservoir | 89 | Hampden | 42 09 42 N | 072 49 34 W |
| Westfield River Reservoir | Reservoir | 80 | Hampden | 42 10 00 N | 072 49 34 W |
| Westfield River Reservoir | Reservoir | 84 | Hampden | 42 11 18 N | 072 50 58 W |
| Westfield River Reservoir | Reservoir | 103 | Hampden | 42 13 18 N | 072 51 34 W |
| Westfield Shops | Locale | 44 | Hampden | 42 06 45 N | 072 43 28 W |
| Westfield Shops Shopping Center | Locale | 43 | Hampden | 42 06 43 N | 072 43 28 W |
| Westfield Sportsmen Club Dam | Dam | 73 | Hampden | 42 09 00 N | 072 45 52 W |
| Westfield State College | School | 81 | Hampden | 42 07 50 N | 072 47 43 W |
| Westfield State Sanatorium | Hospital | 69 | Hampden | 42 06 37 N | 072 42 02 W |
| Westfield Vocational High School | School | 53 | Hampden | 42 07 28 N | 072 45 42 W |
| Westfield Vocational Technical High School | School | 50 | Hampden | 42 07 32 N | 072 45 41 W |
| Westford | Populated Place | 127 | Middlesex | 42 34 45 N | 071 26 16 W |
| Westford Academy | School | 75 | Middlesex | 42 35 20 N | 071 27 53 W |
| Westford Bible Church | Church | 63 | Middlesex | 42 35 38 N | 071 27 57 W |
| Westford Depot Dam | Dam | 55 | Middlesex | 42 35 48 N | 071 26 04 W |
| Westford Hill | Summit | 97 | Middlesex | 42 35 40 N | 071 25 23 W |
| Westford Regency Heliport | Airport | 79 | Middlesex | 42 33 47 N | 071 25 51 W |
| Westford Station | Populated Place | 52 | Middlesex | 42 35 49 N | 071 26 07 W |
| Westford Town Common | Park | 125 | Middlesex | 42 34 52 N | 071 26 19 W |
| Westford United Methodist Church | Church | 73 | Middlesex | 42 35 03 N | 071 27 01 W |
| Westgate Mall | Locale | 52 | Plymouth | 42 05 44 N | 071 03 11 W |
| Westgate Park | Populated Place | 34 | Bristol | 41 43 15 N | 070 56 23 W |
| Westgate Plaza | Locale | 40 | Hampden | 42 06 47 N | 072 43 31 W |
| Westgate Plaza Shopping Center | Locale | 40 | Hampden | 42 06 47 N | 072 43 50 W |
| Westgate Shopping Center | Locale | 41 | Hampden | 42 06 50 N | 072 43 22 W |
| Westgate Shopping Center | Locale | 57 | Plymouth | 42 05 42 N | 071 03 10 W |
| Westgorough High School | School | 96 | Worcester | 42 15 53 N | 071 37 06 W |
| Westhampton | Populated Place | 190 | Hampshire | 42 18 10 N | 072 46 28 W |
| Westhampton Town Hall | Building | 211 | Hampshire | 42 18 15 N | 072 46 31 W |
| Westlands | Populated Place | 45 | Middlesex | 42 36 55 N | 071 20 28 W |
| Westlands Elementary School | School | 46 | Middlesex | 42 36 44 N | 071 20 29 W |
| Westlawn Cemetery | Cape | 212 | Berkshire | 42 42 50 N | 073 12 48 W |
| Westlawn Cemetery | Cemetery | 39 | Middlesex | 42 37 00 N | 071 18 42 W |
| Westlawn Cemetery | Cemetery | 71 | Middlesex | 42 34 15 N | 071 28 00 W |
| Westlawn Cemetery | Cemetery | 85 | Middlesex | 42 32 30 N | 071 29 53 W |
| Westmeadow Plaza | Locale | 86 | Worcester | 42 16 56 N | 071 38 00 W |
| Westmeadow Plaza Shopping Center | Locale | 87 | Worcester | 42 16 54 N | 071 36 33 W |
| Westminster | Populated Place | 328 | Worcester | 42 32 45 N | 071 54 38 W |
| Westminster Country Club | Locale | 346 | Worcester | 42 32 35 N | 071 55 51 W |
| Westminster Depot Post Office (historical) | Post Office | 231 | Worcester | 42 33 36 N | 071 52 31 W |
| Westminster Elementary School | School | 331 | Worcester | 42 32 33 N | 071 54 33 W |
| Westminster Historical Society Building | Building | 333 | Worcester | 42 32 48 N | 071 54 45 W |
| Westminster Historical Society Library | Building | 333 | Worcester | 42 32 48 N | 071 54 45 W |
| Westminster Reservoir | Reservoir | 252 | Worcester | 42 35 30 N | 071 54 34 W |
| Westminster Reservoir Dam | Dam | 252 | Worcester | 42 35 30 N | 071 54 34 W |
| Westminster State Forest | Park | 352 | Worcester | 42 31 10 N | 071 56 48 W |
| Westminster Town Hall | Building | 314 | Worcester | 42 33 00 N | 071 54 28 W |
| Westminster Village-Academy Hill Historic District | Park | 323 | Worcester | 42 32 37 N | 071 54 33 W |
| Weston | Populated Place | 61 | Middlesex | 42 22 00 N | 071 18 11 W |
| Weston Brook | Stream | | Berkshire | 42 29 17 N | 073 07 23 W |
| Weston Brook | Stream | | Hampshire | 42 16 10 N | 072 27 36 W |
| Weston Central Cemetery | Cemetery | 65 | Middlesex | 42 21 57 N | 071 18 26 W |
| Weston Church | Church | 90 | Middlesex | 42 23 45 N | 071 17 08 W |
| Weston College | School | 66 | Middlesex | 42 22 58 N | 071 19 14 W |
| Weston Congregational Church | Church | 63 | Middlesex | 42 21 13 N | 071 17 06 W |
| Weston Field | Park | 203 | Berkshire | 42 42 25 N | 073 12 14 W |
| Weston Golf Club | Locale | 72 | Middlesex | 42 21 40 N | 071 17 13 W |
| Weston High School | School | 67 | Middlesex | 42 20 20 N | 071 18 14 W |
| Weston Jesuit School | School | 12 | Middlesex | 42 22 36 N | 071 07 31 W |
| Weston Jesuit School Library | Building | 12 | Middlesex | 42 22 36 N | 071 07 31 W |
| Weston Junior High School | School | 68 | Middlesex | 42 20 19 N | 071 18 05 W |
| Weston Junoir High School | School | 69 | Middlesex | 42 21 42 N | 071 17 41 W |
| Weston Middle School | School | 67 | Middlesex | 42 20 21 N | 071 18 07 W |
| Weston Mountain | Summit | 685 | Berkshire | 42 30 55 N | 073 06 58 W |