ZIP code
98611
Castle Rock, WA
98611 covers Castle Rock in Cowlitz County, with 9,367 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 98611. Methodology
ZIP code map of 98611
About ZIP code 98611
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 98611. Not ACS. Methodology
People in 98611
Race
- White8,956
- Black or African American31
- American Indian or Alaska Native182
- Asian61
- Native Hawaiian and Pacific Islander27
- Other race154
- Two or more races754
Hispanic or Latino (any race): 465
Age
- Under 101,090
- 10 to 191,285
- 20 to 29925
- 30 to 391,138
- 40 to 491,179
- 50 to 591,401
- 60 to 691,603
- 70 to 791,087
- 80 and older457
Income and housing in 98611
Education
- High school graduate91.7%
- Bachelor's degree13.7%
- Graduate degree6.5%
Places covering 98611
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Castle Rock24.1%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Cowlitz County100.0%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
75.9% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 98611
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 8,592 | |
| 2006 | 8,369 | |
| 2007 | 9,201 | |
| 2008 | 8,547 | |
| 2009 | 8,470 | |
| 2010 | 8,696 | |
| 2011 | 9,295 | 8,477 |
| 2012 | 9,529 | 8,370 |
| 2013 | 10,402 | 8,410 |
| 2014 | 10,021 | 8,410 |
| 2015 | 10,082 | 8,540 |
| 2016 | 10,174 | 8,820 |
| 2017 | 9,944 | 9,070 |
| 2018 | 9,365 | 9,210 |
| 2019 | 9,421 | 9,740 |
| 2020 | 8,803 | 9,830 |
| 2021 | 9,478 | 9,750 |
| 2022 | 9,341 | 9,930 |
| 2023 | 9,367 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 98611
12 nearest ZIP centroids (any distance)
- 98645Silverlake7.0 miPop 2,195 · Income $102,664
- 98593Vader8.5 miPop 1,676 · Income $57,341
- 98581Ryderwood8.8 miPop 383 · Income $37,039
- 98632Longview10.4 miPop 50,845 · Income $64,705
- 98626Kelso11.0 miPop 26,948 · Income $70,058
- 98591Toledo12.0 miPop 3,769 · Income $80,278
- 98596Winlock13.2 miPop 7,276 · Income $75,750
- 98609Carrolls16.2 miPop 0 · Income —
- 98538Curtis17.0 miPop 333 · Income $83,750
- 98649Toutle17.6 miPop 980 · Income $57,167
- 98542Ethel17.8 miPop 686 · Income $61,818
- 98612Cathlamet18.8 miPop 3,325 · Income $59,157
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 98611, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
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ZIP code 98611 FAQ
- What city is ZIP code 98611 in?
- 98611 is in Castle Rock, WA.
- What county is 98611 in?
- 98611 is in Cowlitz County.
- What is the median household income in 98611?
- The median household income in 98611 is $81,630.
- Which ZIP codes are near 98611?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 98611.