Lewis County, Washington Demographics 2026

Name: Lewis County, Washington Demographics
Creator: U.S. Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Lewis County, Washington has a population of 85,154, the 16th most populous county in Washington. The median household income is $74,796 and the median home value is $385,800. The poverty rate is 12.2%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Lewis County Quick Facts

Population 85,154

Median Household Income $74,796

Median Home Value $385,800

Poverty Rate 12.2%

Unemployment Rate 5.3%

Median Age 42.2 years

Homeownership Rate 75.8%

Affordability Ratio 5.2x

Bachelor's Degree+ 21.5%

High School Graduation 91.3%

Cities/Places 13

Population 85,154 16th of 39

Median Income $74,796 24% lower than state

Poverty Rate 12.2%

Unemployment 5.3%

How Lewis County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric	2019–2023	2020–2024	Change
Population	83,925	85,154	+1.5%
Median household income	$69,690	$74,796	+7.3%
Median home value	$341,500	$385,800	+13.0%

Median Household Income

Lewis

$74,796

$98,141

National

$80,734

Median Home Value

Lewis

$385,800

$564,600

National

$332,700

Economy & Housing

Household Income Distribution

Under $25K 14.7%

$25K-$50K 19.6%

$50K-$100K 29.9%

$100K+ 35.9%

Detailed income brackets

Under $10K

4.3%

$10K-$15K

3.2%

$15K-$20K

4.1%

$20K-$25K

3.1%

$25K-$30K

4.2%

$30K-$35K

4.4%

$35K-$40K

4.4%

$40K-$45K

3.8%

$45K-$50K

2.8%

$50K-$60K

6.5%

$60K-$75K

9.4%

$75K-$100K

14.0%

$100K-$125K

11.6%

$125K-$150K

7.7%

$150K-$200K

8.8%

$200K+

7.7%

Employment

5.3% Unemployment Rate State: 5.1%|National: 5.2%

55.8% Labor Force Participation

Housing Overview

Owner 75.8%

Renter 24.2%

Affordability Index Expensive

5.2x home value to income ratio

Median gross rent $1,097/mo 17.6% of median household income annually

People & Demographics

Age Distribution

Under 18

21.6%

18-34

19.0%

35-54

24.1%

55-74

26.6%

75+

8.6%

Race & Ethnicity

Diversity Index

Low Diversity

A less diverse community where one racial or ethnic group represents a large majority.

State average: 56 | National average: 61

Education

Educational Attainment (Adults 25+)

Cities & Places in Lewis County

City	Population	Median Income	Poverty	Home Value
Centralia	18,830	$56,219	19.6%	$318,200
Chehalis	7,587	$73,702	15.0%	$372,900
Napavine	2,158	$104,148	6.0%	$419,100
Winlock	2,140	$80,451	14.9%	$361,700
Fords Prairie	1,823	$55,608	15.7%	$368,000
Morton	1,206	$57,813	13.7%	$300,900
Mossyrock	875	$53,333	25.3%	$280,400
Onalaska	848	N/A	11.9%	$423,700
Vader	745	$64,688	18.8%	$317,200
Toledo	542	$47,292	14.8%	$333,700
Pe Ell	538	$62,679	11.9%	$321,800
Packwood	99	N/A	20.2%	N/A
Mineral	7	N/A	71.4%	N/A

Explore Washington Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Lewis County is located in Washington with a total population of 85,154. It is the 16th most populous county out of 39 in Washington. The county encompasses 13 Census-designated places.

Age Demographics

The median age in Lewis County is 42.2 years. This is 10% higher than the state median of 38.3 years.

Economy, Income & Housing

The median household income in Lewis County is $74,796. This is 24% lower than the state median of $98,141. It is also 7% lower than the national median of $80,734. The poverty rate stands at 12.2%. This is 23% higher than the state poverty rate of 9.9%. The unemployment rate is 5.3%. This is 5% higher than the state rate of 5.1%. The median home value is $385,800. Housing costs are 32% lower than the state median of $564,600. The home-value-to-income ratio is 5.2x. 75.8% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 63.8%.

Race & Ethnicity

The largest racial or ethnic group in Lewis County is White (non-Hispanic), making up 79.9% of the population. Hispanic or Latino residents account for 11.5%. The Black or African American population (0.7%) is well below the state average of 3.9%. The Asian population (1.1%) is well below the state average of 9.7%.

Education

21.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 46% lower than the state rate of 39.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.3%.

Data Sources & Methodology

All figures for Lewis County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Washington and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Lewis County, Washington?

Lewis County has a population of 85,154, making it the 16th most populous county in Washington.

What is the median income in Lewis County?

The median household income in Lewis County is $74,796 with a poverty rate of 12.2%.

How many cities are in Lewis County, Washington?

Lewis County contains 13 Census-designated places.