Lewis County, Washington

Lewis County profile, demographic data, and geographic information.

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF

Government Unit	Unit Type	Jurisdiction Role	Contact / Address
COUNTY OF LEWIS GUS Population: 87,049 (2024) ID: 176799	County	Official County Government	Contact: BUDGET DIRECTOR 351 NW NORTH ST, CHEHALIS WA 98532-1926
CITY OF CENTRALIA GUS Population: 19,061 (2024) ID: 114634	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 609, CENTRALIA WA 98531-0609
CITY OF CHEHALIS GUS Population: 7,717 (2024) ID: 136116	Municipal	Municipal Government Within County	Contact: DIRECTOR OF COMMUNITY DEVELOPMENT 350 N MARKET BLVD, CHEHALIS WA 98532-2620
CITY OF WINLOCK GUS Population: 2,515 (2024) ID: 136118	Municipal	Municipal Government Within County	Contact: CLERK/TREASURER PO BOX 777, WINLOCK WA 98596-0777
TOWN OF NAPAVINE GUS Population: 2,155 (2024) ID: 114636	Municipal	Municipal Government Within County	Contact: CITY CLERK PO BOX 810, NAPAVINE WA 98565-0810
CITY OF MORTON GUS Population: 1,089 (2024) ID: 194188	Municipal	Municipal Government Within County	Contact: MAYOR PO BOX 1089, MORTON WA 98356-1089
CITY OF MOSSYROCK GUS Population: 803 (2024) ID: 176850	Municipal	Municipal Government Within County	Contact: CLERK TREASURER PO BOX 96, MOSSYROCK WA 98564-0096
CITY OF TOLEDO GUS Population: 767 (2024) ID: 209734	Municipal	Municipal Government Within County	Contact: CITY CLERK TREASURER PO BOX 236, TOLEDO WA 98591-0236
CITY OF VADER GUS Population: 690 (2024) ID: 176851	Municipal	Municipal Government Within County	Contact: CITY CLERK/TREASURER PO BOX 189, VADER WA 98593-0189
TOWN OF PE ELL GUS Population: 671 (2024) ID: 136117	Municipal	Municipal Government Within County	Contact: CLERK/TREASURER PO BOX 215, PE ELL WA 98572-0215