Map of Maine's counties

There are approximately 1,600 properties and districts listed on the National Register of Historic Places in the U.S. State of Maine. Each of the state's 16 counties has more than forty listings on the National Register.

          This National Park Service list is complete through NPS recent listings posted February 23, 2024.[1]

Current listings by county

The following are approximate tallies of current listings by county. These counts are based on entries in the National Register Information Database as of April 24, 2008[2] and new weekly listings posted since then on the National Register of Historic Places web site.[3] There are frequent additions to the listings and occasional delistings and the counts here are approximate and not official. New entries are added to the official Register on a weekly basis.[4] Also, the counts in this table exclude boundary increase and decrease listings which only modify the area covered by an existing property or district, although carrying a separate National Register reference number.

Grace Bailey (schooner), in Knox County
County # of Sites
1 Androscoggin 108
2 Aroostook 57
3.1 Cumberland: Portland 95
3.2 Cumberland: Other 149
3.3 Cumberland: Total 244
4 Franklin 47
5 Hancock 131
6 Kennebec 135
7 Knox 97
8 Lincoln 104
9 Oxford 100
10 Penobscot 109
11 Piscataquis 59
12 Sagadahoc 62
13 Somerset 59
14 Waldo 67
15 Washington 101
16 York 183
(duplicates) (8)[5]
Total: 1,655

See also


  1. ^ National Park Service, United States Department of the Interior, "National Register of Historic Places: Weekly List Actions", retrieved February 23, 2024.
  2. ^ "National Register Information System". National Register of Historic Places. National Park Service. April 24, 2008.
  3. ^ "National Register of Historic Places: Weekly List Actions". National Park Service. Retrieved January 2, 2009.
  4. ^ Weekly List Actions, National Register of Historic Places website
  5. ^ The following sites are listed in multiple counties: Arnold Trail to Quebec (Franklin, Kennebec, Sagadahoc, and Somerset), Georges River Canal (Knox and Waldo), Porter-Parsonfield Bridge (Oxford and York), Ryefield Bridge (Oxford and Cumberland), Whitney Farm (Knox and Waldo), and Shaker Village (Androscoggin and Cumberland).