Lewis County, WA demographics:
population, income, and more

Total population
85,154
1.5% year-over-year change
Median household income
$74,796/yr
7.3% year-over-year change
Housing units
36,512
1.3% year-over-year change

Lewis County population

How many people live in Lewis County

Lewis County is home to 85,154 residents, according to the most recent Census data. Gender-wise, 50.3% of Lewis County locals are male, and 49.7% are female.

Total population
85,154
1.5% year-over-year change
Gender ratio
Male
50.3%
42,839
Female
49.7%
42,315
Value Percent YoY change
Male 42,839 50.3% 1.3%
Female 42,315 49.7% 1.6%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Lewis County is 42, with the population distributed as follows: about 17.9% are children under 15, then 10.8% are in the 15 to 24 age group. Adults between 25 and 44 make up 24.5% of the population, while another 25.5% fall into the 45 to 64 bracket. Finally, around 21.4% are 65 or older.

Median age
42.2
Age breakdown
Under 15
17.9%
15 to 24
10.8%
25 to 44
24.5%
45 to 64
25.5%
Over 65
21.4%
Value Percent YoY change
Under 15 15,209 17.9% 1.5%
15 to 24 9,154 10.8% 1.2%
25 to 44 20,890 24.5% 2.6%
45 to 64 21,690 25.5% -0.3%
Over 65 18,211 21.4% 2.4%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Lewis County, 93.4% of the population are US-born citizens, while 3.6% have gained naturalized citizenship. At the same time, 2.9% of residents are non-citizens. As for race, 82.2% of locals are Caucasian, 0.8% are African American and 1.2% have Asian roots. Another 1.4% are Indigenous American, 0.2% are Pacific Islanders, while 3.2% identify as another race. There’s also a share of 10.9% that includes residents with two or more races.

Citizenship
U.S.-born citizens
93.4%
Non-U.S.-born citizens
3.6%
Non-citizens
2.9%
Value Percent YoY change
U.S.-born citizens 79,573 93.4% 1.2%
Non-U.S.-born citizens 3,086 3.6% 12.0%
Non-citizens 2,495 2.9% -1.5%
Racial breakdown
White
82.2%
Black or African American
0.8%
American Indian and Alaska Native
1.4%
Asian
1.2%
Native Hawaiian and other Pacific Islander
0.2%
Two or more races
10.9%
Other
3.2%
Value Percent
White 70,016 82.2%
Black or African American 713 0.8%
American Indian and Alaska Native 1,203 1.4%
Asian 1,011 1.2%
Native Hawaiian and other Pacific Islander 199 0.2%
Two or more races 9,250 10.9%
Other 2,762 3.2%

Households in Lewis County

A peek inside Lewis County households

Lewis County has 32,916 households, with an average of 3 members in each. Of these, 67.1% are families, while the remaining 32.9% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
32,916
1.9% year-over-year change
Average people per household
3
Non-family households
10,819
Family households
22,097
Value Percent YoY change
Non-family households 10,819 32.9% 1.0%
Family households 22,097 67.1% 2.3%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Lewis County

The housing landscape of Lewis County

Lewis County's housing consists of 36,512 units, with 71.8% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 1.8% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 14.7% of the housing landscape.

Housing units
36,512
1.3% year-over-year change
Housing types
Value Percent
1 unit, detached 26,202 71.8%
1 unit, attached 648 1.8%
2 units 515 1.4%
3 or 4 units 1,057 2.9%
5 to 9 units 635 1.7%
10 to 19 units 387 1.1%
20 to 49 units 817 2.2%
50 or more units 626 1.7%
Mobile home 5,379 14.7%
Boat, RV, van, etc. 246 0.7%
Homes built since 2020
796
83.8% year-over-year change

The age of buildings in Lewis County

In Lewis County, the median construction year is 1980. About 16% of homes were built before the 1940s, with another 4.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 13.2% of homes were added from 2000 to 2009, 7.2% between 2010 and 2019, and 2.2% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 5,842 16% -3.1%
Built between 1940 and 1949 1,663 4.6% -1.3%
Built between 1950 and 1959 2,126 5.8% -5.5%
Built between 1960 and 1969 2,670 7.3% 3.6%
Built between 1970 and 1979 5,945 16.3% -0.3%
Built between 1980 and 1989 3,970 10.9% -0.1%
Built between 1990 and 1999 6,021 16.5% 0.6%
Built between 2000 and 2009 4,836 13.2% 5.0%
Built between 2010 and 2019 2,643 7.2% 4.5%
Built in 2020 or later 796 2.2% 83.8%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Lewis County occupancy rates

Out of the 32,916 occupied housing units in Lewis County, 75.8% are owner-occupied, while 24.2% are lived in by tenants. Meanwhile, 9.8% of all homes on the local market sit vacant.

Occupied housing units
32,916
1.9% year-over-year change
Occupancy breakdown
Renter occupied
7,978
Owner occupied
24,938
Value Percent YoY
change
Renter occupied 7,978 24.2% -4.4%
Owner occupied 24,938 75.8% 4.1%
Unoccupied housing units
9.8%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Lewis County housing costs

Housing costs in Lewis County come to a median of $1,172 per month, while tenants specifically pay a median gross rent of $1,097.

Median housing costs per month
$1,172/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Lewis County
$1,097/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Lewis County

Lewis County education at a glance

About 38.4% of the population in Lewis County went to high school, while 26.1% pursued college studies. Another 12.2% earned an associate degree and 13.4% hold a bachelor’s. Meanwhile, 6.6% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 2,221 3.3% 2.8%
High school diploma 25,607 38.4% -2.0%
College diploma 17,397 26.1% -1.8%
Associate degree 8,174 12.2% 9.3%
Bachelor's degree 8,907 13.4% 8.4%
Graduate degree 4,425 6.6% 8.7%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Lewis County

How much people earn in Lewis County

The average annual household income in Lewis County was $92,194 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +6.5% change from the previous year. At the same time, the median income stood at $74,796, reflecting a +7.3% shift over the same period.

Average household income in Lewis County
$92,194/year
6.5% year-over-year change
Median household income in Lewis County
$74,796/year
7.3% year-over-year change

Lewis County income by age

In Lewis County, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $87,983. Those with someone between 45 and 64 in charge, often well established professionally, earn $94,776 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $41,386, while those led by someone over 65, many of whom may be retired, have about $48,705 in earnings. Overall, 88% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $41,386 -13.8%
25 - 44 $87,983 8.6%
45 - 64 $94,776 11.4%
Over 65 $48,705 -1.4%
Above poverty level
73,074
Below poverty level
9,934
Value Percent YoY
change
Above poverty level 73,074 88% 2.3%
Below poverty level 9,934 12% -4.9%

Employment in Lewis County

Workforce and job types in Lewis County

The job market in Lewis County is powered by 36,294 working residents, spread across a range of industries and roles. 69.2% of the working population are employed in professional or administrative positions, while 30.8% are in hands-on or service-based jobs. Also, 9.7% run their own businesses, 63.8% are employed by private companies, and 19.5% work in the public sector.

Workforce demographics

Working population
36,294
2.9% year-over-year change
White collar
25,116
Blue collar
11,178
Value Percent YoY change
White collar 25,116 69.2% 3.9%
Blue collar 11,178 30.8% 0.8%
Employer type
Self employees
9.7%
Private companies
63.8%
Governmental workers
19.5%
Not for profit companies
7.1%
Value Percent YoY change
Self employees 3,520 9.7% -13.3%
Private companies 23,136 63.8% 4.3%
Governmental workers 7,074 19.5% 3.3%
Not for profit companies 2,564 7.1% 17.0%
Unemployment rate
5.3%
-7.9% year-over-year change

Available workforce

The unemployment rate in Lewis County stands at 5.3%, representing the share of the workforce currently without a job and actively looking for one.

For renters, the unemployment rate helps paint a picture of job security and financial stability in the area. Rates around 4% to 5% are considered typical. A lower-than-average rate might suggest strong job prospects and a thriving local economy, while a higher rate could hint at fewer opportunities—both useful to consider when planning a move.

Transportation in Lewis County

How people get around in Lewis County

Commuting methods vary: 85.3% of residents travel by personal vehicle and 2.7% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 29,714 85.3% 2.5%
Taxicab 33 0.1% N/A
Bus or trolleybus 158 0.4% 10.5%
Subway or elevated 9 0% N/A
Railroad 7 0% -30.0%
Ferryboat 18 0% 5.9%
Motorcycle 151 0.4% 29.1%
Bicycle 18 0% -25.0%
Walk 934 2.7% -27.1%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Lewis County by zipcode?

Zipcode Population Number of households Median income Average income
98336 981 378 $67,632 $72,138
98377 2,527 1,090 $56,167 $77,396
98355 702 181 $102,438 $110,469
98356 2,172 962 $60,060 $71,623
98361 457 236 $0 $94,563
98531 27,337 11,123 $63,406 $78,974
98532 27,135 9,931 $89,910 $108,308
98533 890 355 $39,208 $65,857
98538 460 166 $105,000 $153,320
98542 625 230 $52,963 $54,194

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FAQs about Lewis County demographics 

What is the total population of Lewis County?

Lewis County has a total population of 85,154 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by +1.5% compared to a year ago.

What is the gender ratio in Lewis County?

The gender ratio in Lewis County is as follows:
  • 50.3% males (42,839 residents)
  • 49.7% females (42,315 residents)

What is the median age in Lewis County?

The median age in Lewis County is 42.2.

What is the age distribution of the population in Lewis County?

The age distribution in Lewis County is as follows:
  • Under 15: 17.9% (15,209 residents)
  • Ages 15-24: 10.8% (9,154 residents)
  • Ages 25-44: 24.5% (20,890 residents)
  • Ages 45-64: 25.5% (21,690 residents)
  • Over 65: 21.4% (18,211 residents)

What is the racial and ethnic makeup of Lewis County?

The racial and ethnic makeup of Lewis County is as follows:
  • White: 82.2% (70,016 residents)
  • Black or African American: 0.8% (713 residents)
  • American Indian and Alaska Native: 1.4% (1,203 residents)
  • Asian: 1.2% (1,011 residents)
  • Native Hawaiian and Other Pacific Islander: 0.2% (199 residents)
  • Two or More Races: 10.9% (9,250 residents)
  • Other: 3.2% (2,762 residents)

What percentage of the population in Lewis County are U.S.-born citizens?

U.S.-born citizens represent 93.4% of the population in Lewis County.

How many housing units are there in Lewis County?

There are 36,512 housing units in Lewis County, reflecting a +1.3% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Lewis County and what is the average household size?

Lewis County has a total of 32,916 households, with an average of 3 people in each.

What is the median household income in Lewis County?

Lewis County has a median household income of $74,796, representing a +7.3% shift from the previous year, according to the U.S. Census Bureau.

What is the employment rate and job market overview for Lewis County?

The employment rate is 94.7% in Lewis County, with a workforce of 36,294 residents. Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 69.2% (25,116 residents)
  • Blue-collar workers: 30.8% (11,178 residents)

Places of employment:
  • Self-employed: 9.7% (3,520 residents)
  • Private companies: 63.8% (23,136 residents)
  • Governmental workers: 19.5% (7,074 residents)
  • Not-for-profit companies: 7.1% (2,564 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025