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Washington ZIP Codes
Cowlitz County
Ryderwood, WA
98581
98581 ZIP Code — Ryderwood, WA
Cowlitz County, Washington
ZIP code 98581 is located in
Ryderwood ,
Washington ,
within Cowlitz County .
It covers approximately 29.16 square miles and serves a population of
425 residents.
This is a standard ZIP code in the Pacific (PT) timezone,
served by area code 360/564 .
About ZIP code 98581
The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $169,200.
Median household income is $41,250. The poverty rate of 6% is below the national average. 97% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is production, transportation, and material moving, with manufacturing as the leading industry.
Educational attainment is near the national average, with 28% of residents holding a bachelor's degree or higher.
Health indicators show elevated rates of diabetes (16%) compared to national benchmarks.
Notable community characteristics include a notable veteran presence at 19% of civilians, above the national average of 7%; and disability rates above the national average at 41%.
Overall, ZIP code 98581 reflects a community defined by a strong veteran community, high homeownership, and a significant Social Security-dependent population.
98581 ZIP code map
View map of 98581
Cities in ZIP code 98581
Below are the cities the US Postal Service accepts for ZIP code 98581. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
425
Population density
15 / sq mi
State FIPS
53
County FIPS
015
Geography
Land area
29.16 sq mi
Water area
0.00 sq mi
Latitude
46.3297
Longitude
-123.0975
Timezone
Pacific (PT)
Area code
360/564
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
75.4%
43.2%
31.7%
$50k – $100k
24.6%
32.8%
30.6%
$100k – $200k
0.0%
19.8%
27.1%
Over $200k
0.0%
4.2%
10.6%
Demographics & statistics
$41,250
Median household income
$169,200
Median home value
28.0%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 0 0.0%
18 and over 425 100.0%
65 and over 379 89.2%
Median age 72.2 years
Race & ethnicity
Group Count %
White 409 93%
Hispanic or Latino 15 3.4%
Other race 15 3.4%
Two or more races 1 0.2%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
75.4%
43.2%
31.7%
$50k – $100k
24.6%
32.8%
30.6%
$100k – $200k
0.0%
19.8%
27.1%
Over $200k
0.0%
4.2%
10.6%
Range % of households
$10k–$15k 5.6%
$15k–$25k 17.9%
$25k–$35k 21.1%
$35k–$50k 15.5%
$50k–$75k 8.4%
$75k–$100k 25.5%
$100k–$150k 6.0%
Median income $41,250
Housing
Housing overview
Metric Value
Median home value $169,200
Median rent / month $0
Owner occupied 100.0%
Renter occupied 0.0%
Vacant 0.0%
Single-family detached 95.2%
Large apartment buildings 0.0%
Mobile homes 4.8%
Median rooms 5.0
Avg household size (owned) 1.69
Year built
Era %
2020 or later 0.0%
2010–2019 0.0%
2000–2009 4.4%
1990–1999 21.1%
1980–1989 0.0%
1970–1979 0.0%
1960–1969 0.0%
1950–1959 0.0%
1940–1949 10.8%
1939 or earlier 63.7%
Bedrooms
Size % of units
No bedroom (studio) 0.0%
1 bedroom 14.3%
2 bedrooms 47.8%
3 bedrooms 31.5%
4 bedrooms 6.4%
5+ bedrooms 0.0%
Vehicles per household
Vehicles % of households
No vehicle 0.0%
1 vehicle 50.6%
2 vehicles 25.1%
3 or more 24.3%
Heating fuel
Fuel type %
Electricity 84.5%
Wood 4.8%
Households & families
Household type Count %
Married-couple family 144 57.4%
Cohabiting couple 0 0.0%
Male householder, no spouse 0 0.0%
Female householder, no spouse 107 42.6%
Households with children under 18 0 0.0%
Households with seniors (65+) 243 96.8%
Average household size 1.69
Marital status
Status Male Female
Never married 8.6% 0.0%
Married 91.4% 57.2%
Separated 0.0% 0.0%
Widowed 0.0% 12.0%
Divorced 0.0% 30.8%
Education
Less than 9th grade
10.6%
Some college, no degree
28.9%
Graduate / professional
4.9%
Metric %
HS diploma or higher 81.6%
Bachelor's or higher 28.0%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 0 0.0%
Kindergarten 0 0.0%
Elementary school 0 0.0%
High school 0 0.0%
College / grad school 0 0.0%
Employment
Industry of employment
Education & healthcare
22.0%
Transportation & utilities
11.9%
Arts, food & hospitality
11.9%
Occupation
Category %
Management, business & arts 37.3%
Service 11.9%
Sales & office 11.9%
Natural resources & construction 0.0%
Production & transportation 39.0%
Employment type
Type %
Private sector 88.1%
Government 0.0%
Self-employed 11.9%
Unpaid family workers 0.0%
Commute
Method %
Drive alone 84.7%
Carpool 0.0%
Public transit 0.0%
Walk 0.0%
Work from home 15.3%
Other means 0.0%
Avg commute (minutes) 0.0
Poverty
Married-couple families
9.0%
Female-led households
0.0%
Income support
Source % of households
Social Security 97.2%
Retirement income 75.7%
Supplemental Security 0.4%
Cash public assistance 0.0%
Food stamps / SNAP 0.0%
Health indicators
Condition %
Obesity 34.1%
High blood pressure 54.0%
High cholesterol 47.2%
Diabetes 15.9%
Heart disease 14.0%
Stroke 5.9%
Asthma 10.9%
Arthritis 47.7%
Kidney disease 5.4%
Pulmonary disease 11.9%
Cancer 15.0%
Behavior / access %
Smoking 12.9%
Binge drinking 8.4%
No physical activity 23.2%
Less than 7 hrs sleep 30.8%
Depression 25.1%
Fair or poor health 19.1%
Poor mental health 10.5%
Poor physical health 14.5%
No health insurance 7.9%
Visited doctor (checkup) 82.5%
Visited dentist 69.2%
Cholesterol screening 96.7%
Teeth loss 11.8%
Veterans & disability
Veterans Count %
Civilian veterans 79 18.6%
Disability %
Any disability 40.9%
Under 18 0.0%
18–64 years 15.2%
65 and over 44.1%
Health insurance coverage
Type %
Private insurance 65.6%
Public insurance 91.3%
No insurance 5.2%
Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 425 100.0%
Spanish 0 0.0%
Other Indo-European 0 0.0%
Asian & Pacific Islander 0 0.0%
Other languages 0 0.0%
Place of birth & citizenship
Origin Count %
Native born (US) 425 100.0%
Born in same state 410 96.5%
Born in different state 31 7.3%
Foreign born 15 3.5%
Naturalized citizen 0 0.0%
Not a US citizen 0 0.0%
Ancestry
Ancestry Count %
French 140 32.9%
Italian 52 12.2%
Arab 48 11.3%
Ancestry Count %
Polish 37 8.7%
English 35 8.2%
Norwegian 7 1.6%
Technology access
Metric % of households
Computer access 59.1%
Internet access 56.6%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 98581
What city is ZIP code 98581 in?
ZIP code 98581 is primarily assigned to Ryderwood, Washington.
What county is ZIP code 98581 in?
ZIP code 98581 falls within Cowlitz County, Washington.
Does ZIP code 98581 have an older population?
89% of residents in ZIP code 98581 are 65 or older, above the national average of ~17%.
Does ZIP code 98581 have a large retiree population?
97% of households in ZIP code 98581 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 98581 have a large veteran population?
19% of civilians in ZIP code 98581 are veterans, above the national average of ~7%.
What is the typical home value in ZIP code 98581?
The median home value in ZIP code 98581 is $169,200.
What timezone is ZIP code 98581 in?
ZIP code 98581 observes the PST timezone.
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