Category:National Register of Historic Places in Massachusetts by county

• Houses on the National Register of Historic Places in Massachusetts by county‎ (10 C)

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• Lists of National Register of Historic Places in Massachusetts by county‎ (15 P)

B

• National Register of Historic Places in Barnstable County, Massachusetts‎ (4 C, 98 P)
• National Register of Historic Places in Berkshire County, Massachusetts‎ (1 C, 143 P)
• National Register of Historic Places in Bristol County, Massachusetts‎ (5 C, 89 P)

C

• National Register of Historic Places in Cambridge County, Massachusetts‎ (2 P)

D

• National Register of Historic Places in Dukes County, Massachusetts‎ (22 P)

E

• National Register of Historic Places in Essex County, Massachusetts‎ (8 C, 146 P)

F

• National Register of Historic Places in Franklin County, Massachusetts‎ (65 P)

H

• National Register of Historic Places in Hampden County, Massachusetts‎ (2 C, 63 P)
• National Register of Historic Places in Hampshire County, Massachusetts‎ (86 P)

M

• National Register of Historic Places in Middlesex County, Massachusetts‎ (14 C, 195 P)

N

• National Register of Historic Places in Nantucket, Massachusetts‎ (8 P)
• National Register of Historic Places in Norfolk County, Massachusetts‎ (5 C, 97 P)

P

• National Register of Historic Places in Plymouth County, Massachusetts‎ (2 C, 143 P)

S

• National Register of Historic Places in Suffolk County, Massachusetts‎ (4 C, 17 P)

W

• National Register of Historic Places in Worcester County, Massachusetts‎ (6 C, 230 P)