The Mother of All Counties

The Lewis County Historical Society and Museum celebrates the storied history of Lewis County, Washington. Founded on December 21, 1845, Lewis County once stretched at one point from the Cowlitz River to the south and north to Sitka, Alaska. Come celebrate our rural heritage of the hop fields and timber industry to the Chehalis and Cowlitz Native American tribes.

Discover the History of Lewis County

Join us in preserving history

Historical Society Membership

Become a member of the Lewis County Historical Museum family with a museum membership! Your membership to the Historical Society family helps support historical preservation, education, and digitization programs throughout the Museum.

Visit our ho model RR

Come on down to the Lewis County Historical Museum to see our ever expanding HO model RR layout. This has been a labor of love by the Lewis County Model RR Club. It depicts Lewis County’s major rail stops during the 1970’s.

ho Model Train layout

Visit our Historic Archives

Historical Society Research Library

The research library holds countless archives and records chronicling the entire history of Lewis County.

Watch the trains go by

View live streaming of the trains that travel by the Lewis County Historical Museum. Brought to you by Virtual Railfan.

24/7 Live Feed

Mark your calendars for The Chehalis Flying Saucer Party, Sept 22nd & 23rd. Click here for more info.