# National Register of Historic Places listings in Mason County, Washington

This list presents the full set of buildings, structures, objects, sites, or districts designated on the National Register of Historic Places in Mason County, Washington, and offers brief descriptive information about each of them. The National Register recognizes places of national, state, or local historic significance across the United States. Out of over 90,000 National Register sites nationwide, Washington is home to approximately 1,500, and 18 of those are found in Mason County.
This National Park Service list is complete through NPS recent listings posted February 21, 2025.

## Current listings

| | Name on the Register | Image | Date listed | Location | City or town | Description |
| 1 | Big Creek Archeological Site-45MS100 | Upload image | October 13, 1999 (#99001219) | Address Restricted | Hoodsport | |
| 2 | Cushman Hydroelectric Project Historic District | Cushman Hydroelectric Project Historic District | February 2, 2015 (#14001244) | 21451 N. U.S. 101 47°22′19″N 123°09′44″W﻿ / ﻿47.372020°N 123.162130°W﻿ / 47.372020; -123.162130﻿ (Cushman Hydroelectric Project Historic District) | Hoodsport | |
| 3 | Cushman No. 1 Hydroelectric Power Plant | Cushman No. 1 Hydroelectric Power Plant More images | December 15, 1988 (#88002759) | South end of Lake Cushman 47°25′23″N 123°13′21″W﻿ / ﻿47.423063°N 123.222377°W﻿ / 47.423063; -123.222377﻿ (Cushman No. 1 Hydroelectric Power Plant) | Hoodsport | |
| 4 | Cushman No. 2 Hydroelectric Power Plant | Cushman No. 2 Hydroelectric Power Plant More images | December 15, 1988 (#88002757) | Skokomish River 47°22′59″N 123°10′42″W﻿ / ﻿47.383056°N 123.178333°W﻿ / 47.383056; -123.178333﻿ (Cushman No. 2 Hydroelectric Power Plant) | Hoodsport | |
| 5 | Ebenezer Congregational Church | Ebenezer Congregational Church More images | September 13, 2018 (#100002940) | 18500 WA 3 47°23′03″N 122°49′43″W﻿ / ﻿47.3841°N 122.8287°W﻿ / 47.3841; -122.8287﻿ (Ebenezer Congregational Church) | Allyn | |
| 6 | Goldsborough Creek Bridge | Goldsborough Creek Bridge | July 16, 1982 (#82004264) | WA 3 47°12′34″N 123°05′57″W﻿ / ﻿47.209444°N 123.099167°W﻿ / 47.209444; -123.099167﻿ (Goldsborough Creek Bridge) | Shelton | Historic Bridges and Tunnels in Washington TR |
| 7 | Harstine Island Community Hall | Harstine Island Community Hall More images | March 16, 1989 (#89000212) | North Island Dr. and Hartstene Island Dr. 47°16′35″N 122°53′10″W﻿ / ﻿47.276389°N 122.886111°W﻿ / 47.276389; -122.886111﻿ (Harstine Island Community Hall) | Harstine Island | |
| 8 | High Steel Bridge | High Steel Bridge More images | July 16, 1982 (#82004265) | Spans Skokomish South Fork 47°22′05″N 123°16′44″W﻿ / ﻿47.368056°N 123.278889°W﻿ / 47.368056; -123.278889﻿ (High Steel Bridge) | Shelton | Historic Bridges and Tunnels in Washington TR |
| 9 | Malaney–O'Neill House | Malaney–O'Neill House | January 23, 2013 (#12001222) | 1570 E. Agate Bay Road 47°14′49″N 123°00′46″W﻿ / ﻿47.246814°N 123.012868°W﻿ / 47.246814; -123.012868﻿ (Malaney–O'Neill House) | Shelton vicinity | |
| 10 | Mason County Courthouse | Mason County Courthouse More images | January 9, 2013 (#12001160) | 419 N. 4th St. 47°12′57″N 123°06′13″W﻿ / ﻿47.215939°N 123.103741°W﻿ / 47.215939; -123.103741﻿ (Mason County Courthouse) | Shelton | |
| 11 | North Hamma Hamma River Bridge | North Hamma Hamma River Bridge More images | July 16, 1982 (#82004262) | Spans North Hamma Hamma River 47°32′23″N 123°02′33″W﻿ / ﻿47.539722°N 123.0425°W﻿ / 47.539722; -123.0425﻿ (North Hamma Hamma River Bridge) | Eldon | Historic Bridges and Tunnels in Washington TR |
| 12 | Shelton Public Library and Town Hall | Shelton Public Library and Town Hall More images | July 14, 1983 (#83003348) | 5th St. and Railroad Ave. 47°12′48″N 123°06′11″W﻿ / ﻿47.213333°N 123.103056°W﻿ / 47.213333; -123.103056﻿ (Shelton Public Library and Town Hall) | Shelton | |
| 13 | Schafer State Park | Schafer State Park More images | May 10, 2010 (#10000255) | 1365 W Schafer Park Rd. 47°05′59″N 123°28′21″W﻿ / ﻿47.099614°N 123.472461°W﻿ / 47.099614; -123.472461﻿ (Schafer State Park) | Elma | |
| 14 | Simpson Logging Company Locomotive No. 7 and Peninsular Railway Caboose No. 700 | Simpson Logging Company Locomotive No. 7 and Peninsular Railway Caboose No. 700 More images | January 12, 1984 (#84003532) | 3rd and Railroad Aves. 47°12′47″N 123°06′03″W﻿ / ﻿47.213056°N 123.100833°W﻿ / 47.213056; -123.100833﻿ (Simpson Logging Company Locomotive No. 7 and Peninsular Railway Caboose No. 700) | Shelton | |
| 15 | South Hamma Hamma River Bridge | South Hamma Hamma River Bridge More images | July 16, 1982 (#82004263) | Spans South Hamma Hamma River 47°32′11″N 123°02′28″W﻿ / ﻿47.536389°N 123.041111°W﻿ / 47.536389; -123.041111﻿ (South Hamma Hamma River Bridge) | Eldon | Historic Bridges and Tunnels in Washington TR |
| 16 | taba das | taba das | February 16, 2005 (#05000066) | Address Restricted | Potlatch | |
| 17 | Twanoh State Park | Twanoh State Park More images | September 10, 2014 (#14000614) | 1290 E. WA 106 47°22′27″N 122°58′25″W﻿ / ﻿47.3741°N 122.9735°W﻿ / 47.3741; -122.9735﻿ (Twanoh State Park) | Union | |
| 18 | Vance Creek Bridge | Vance Creek Bridge More images | July 16, 1982 (#82004266) | Northwest of Shelton 47°20′06″N 123°19′10″W﻿ / ﻿47.335°N 123.319444°W﻿ / 47.335; -123.319444﻿ (Vance Creek Bridge) | Shelton | Historic Bridges and Tunnels in Washington TR |