Postal Codes

98611 ZIP Code

Advertisement

English Español

ZIP code 98611 covers Castle Rock, Washington, with a population of about 9,367 and a median household income of $81,630.

Population
9,36769 per square mile
Median age
44.15.4 points above the US average
Median household income
$81,63014% below the Washington median
Poverty rate
7.1%5.3 points below the US average
Typical home value
$487,160up 14.9% in five years
Median rent
$1,34820% below the Washington median
Degree or higher
13.7%21.3 points below the US average
Homeownership
82.2%17.2 points above the US average
Time zone
Pacific UTC-08:00observes daylight saving time
Businesses
160

Where 98611 is

Castle Rock, Washington — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population9,367
Median age44.1
Family households70.8%
Born outside the US1.4%
Speaks a language other than English at home2.5%
White (non-Hispanic)86.6%
Black (non-Hispanic)0.1%
Asian (non-Hispanic)0.6%
Hispanic or Latino2.8%
Veterans12.1%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$81,630
Income per person$36,560
Poverty rate7.1%
Households on SNAP or cash assistance19.4%

Household income distribution

Under $10k4.5%
$10–15k1.0%
$15–20k3.7%
$20–25k3.6%
$25–30k4.3%
$30–35k3.8%
$35–40k2.7%
$40–45k2.0%
$45–50k1.9%
$50–60k5.8%
$60–75k9.8%
$75–100k19.3%
$100–125k12.8%
$125–150k8.0%
$150–200k6.5%
$200k or more10.3%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed5,050
Mean adjusted gross income$78,415
Returns declaring $200,000 or more5.1%
Returns, under $25k23.4%
Returns, $25k–$50k21.6%
Returns, $50k–$75k15.4%
Returns, $75k–$100k12.7%
Returns, $100k–$200k21.8%
Returns, $200k or more5.1%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$382,000
Median gross rent$1,348
Rent as a share of household income27.4%
Owner-occupied82.2%
Vacant homes5.7%
Median year built1983

What the homes are

Detached house73.7%
Attached house0%
2 to 4 units3.7%
5 to 19 units0.6%
20 or more units4.1%
Mobile home17.1%
Boat, RV or van0.8%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$487,160as of 2026-07
Typical home value, 1 yearup 1.1%
Typical home value, 5 yearsup 14.9%
Typical home value, 10 yearsup 113.8%
Typical home value since 2000
200920172026$487,160$170,970

$193,402 in 2009 to $487,160 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.8%
Bachelor's degree or higher13.7%
High school diploma or higher91.7%
Works from home7%
Drives to work alone84.9%
Takes public transport0.3%
Commutes 45 minutes or more18.2%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity39.7% 6.3 pts above the national average of 33.4%
Diagnosed diabetes11.5% 0.5 pts below the national average of 12%
Currently smokes12.9% same as the national average of 13.2%
High blood pressure36.7% 2.6 pts above the national average of 34.1%
Fair or poor general health19.8% 0.5 pts below the national average of 20.3%
No health insurance (18–64)7.4% 3.9 pts below the national average of 11.3%
Depression27.2% 5.3 pts above the national average of 21.9%
No leisure-time physical activity21.4% 4 pts below the national average of 25.4%
Arthritis35.3% 10.2 pts above the national average of 25.1%
Binge drinking15.8% same as the national average of 16%
Taking blood pressure medication74.5% same as the national average of 74.7%
Cancer (non-skin)10.6% 2.9 pts above the national average of 7.7%
Current asthma12.4% 2 pts above the national average of 10.4%
Coronary heart disease7.5% 1.3 pts above the national average of 6.2%
Routine check-up in past year73.1% 3.6 pts below the national average of 76.7%
Cholesterol screening85% 0.9 pts below the national average of 85.9%
Cognitive disability15.2% same as the national average of 14.8%
Colorectal screening69.1% 4.8 pts above the national average of 64.3%
COPD7.5% 0.9 pts above the national average of 6.6%
Visited a dentist60.7% 0.6 pts below the national average of 61.3%
Any disability33.3% 2.6 pts above the national average of 30.7%
Hearing disability8.7% 2 pts above the national average of 6.7%
High cholesterol36% same as the national average of 36.2%
Independent living disability8.4% same as the national average of 8.4%
Mammography use75.7% same as the national average of 75.9%
Poor mental health (14+ days)18% 1.2 pts above the national average of 16.8%
Mobility disability14.8% 0.8 pts above the national average of 14%
Poor physical health (14+ days)15.6% 2.1 pts above the national average of 13.5%
Self-care disability4% same as the national average of 4%
Sleeps under 7 hours35.3% 1.1 pts below the national average of 36.4%
Stroke3.9% 0.5 pts above the national average of 3.4%
All natural teeth lost11.3% 1.7 pts below the national average of 13%
Vision disability4.7% 0.9 pts below the national average of 5.6%
Business and employment

Census ZIP Code Business Patterns 2022

Business establishments160
People employed859
Annual payroll$36,805,000
Advertisement
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 78.8% of US census tracts
FEMA ratingRelatively Low to Relatively High across the 6 census tracts this ZIP code covers
Expected annual loss75.7 out of 100
Community resilience47 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Volcanic activity99.5Very High at its worst in this ZIP code
Landslide89.6Relatively Moderate at its worst in this ZIP code
River flooding89.2Very High at its worst in this ZIP code
Earthquake84.6Relatively High at its worst in this ZIP code
Heat wave81.9Relatively High at its worst in this ZIP code
Wildfire77.7Relatively Low at its worst in this ZIP code
Cold wave66Relatively High at its worst in this ZIP code
Winter weather46.3Relatively Moderate at its worst in this ZIP code
Strong wind40.5Relatively Low at its worst in this ZIP code
Hail25.1Very Low at its worst in this ZIP code
Tornado19.3Very Low at its worst in this ZIP code
Lightning18.1Relatively Low at its worst in this ZIP code
Coastal flooding17.9Relatively Moderate at its worst in this ZIP code
Avalanche11.4Very Low at its worst in this ZIP code
Ice storm8.5Very Low at its worst in this ZIP code
Compared with Washington and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPWashingtonUnited States
Median household income$81,630$94,952$78,538
Income per person$36,560$51,493$43,289
Poverty rate7.1%9.9%12.4%
Median home value$382,000$519,800$303,400
Median gross rent$1,348$1,682$1,348
Homeownership82.2%63.9%65%
Bachelor's degree or higher13.7%38.8%35%
Unemployment rate3.8%5%5.2%
Works from home7%17.7%13.5%
Born outside the US1.4%15.1%13.9%
Median age44.138.238.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationLONGVIEW, WA US14.2 km away
Rain in a year48 in

Average high and low by month

January47.7°F / 35.1°F6.53 in rain
February52°F / 34.7°F4.81 in rain
March56.9°F / 37.5°F4.91 in rain
April62.1°F / 40.4°F4.08 in rain
May68.8°F / 45.3°F3.11 in rain
June72.9°F / 49.5°F2.03 in rain
July79.3°F / 53.4°F0.63 in rain
August80.4°F / 53.3°F0.97 in rain
September75.7°F / 49.6°F2.29 in rain
October64°F / 44.1°F4.38 in rain
November53°F / 38.6°F7.24 in rain
December46.6°F / 34.8°F7.14 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 4 school districts, so the address decides which one, not the ZIP code.

Castle Rock School District76.2% of this ZIP code's land area
Toutle Lake School District11.2% of this ZIP code's land area
Kelso School District8.7% of this ZIP code's land area
Longview Public Schools3.9% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability30more vulnerable than 30% of US census tracts
Socioeconomic status35more vulnerable than 35% of US census tracts
Household characteristics36more vulnerable than 36% of US census tracts
Racial and ethnic minority status14more vulnerable than 14% of US census tracts
Housing type and transport38more vulnerable than 38% of US census tracts
Walkability4.7 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

98645 Silverlake, WA12.2 km away
98593 Vader, WA13.8 km away
98626 Kelso, WA14.6 km away
98632 Longview, WA14.6 km away
98581 Ryderwood, WA14.6 km away
98591 Toledo, WA19.1 km away
98649 Toutle, WA20.5 km away
98609 Carrolls, WA23.3 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Cowlitz County100% of this ZIP code's land area
Time zonePacific (UTC-08:00 standard)
Daylight saving timeObserved
Land area136.12 sq mi
Water area1.47 sq mi
Population density69 people per sq mi
Latitude, longitude46.2783, -122.9139

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

Advertisement