| ZIP Code | 98611 |
|---|---|
| City | Castle Rock |
| State | Washington (WA) |
| County | Cowlitz County |
| Area Code | 360/564 |
| Elevation | 617 ft |
| Latitude | 46.305145 |
|---|---|
| Longitude | -122.900687 |
| Timezone | Los Angeles (DST) |
| FIPS | 53015 |
| ZIP Type | Standard |
| Status | Active |
Race & Ethnicity
Age Breakdown
Key Indicators
| Median Age | 44.1 yrs |
|---|---|
| Avg Household Size | 2.68 |
| Below Poverty | 7.0% ▼ 30% below avg |
| College Grads | 27.7% ▼ 29% below avg |
| Unemployment | 3.8% ▼ 22% below avg |
| No HS Diploma | 26 (0.4%) |
| HS Graduate | 2,204 (35.3%) |
| Some College | 1,037 (16.6%) |
| Associates | 1,252 (20%) |
| Bachelors | 868 (13.9%) |
| Graduate Degree | 862 (13.8%) |
Education
Housing Tenure
Home Value Distribution
Financials
| Median HH Income | $81,630 ≈ Avg ↑ 23% since 2019 |
|---|---|
| Median Home Value | $382,000 ▲ 37% above avg ↑ 61% since 2019 |
| Home/Income Ratio | 4.7x (nat avg ~3.5x) |
| Median Rent | $1,348/mo ↑ 50% since 2019 |
| Total Units | 3,687 |
| Vacant Units | 211 |
| Avg HH Size | 2.68 |
Income Distribution
How People Get to Work
Commute Time
Year Built
Summary
| Total Units | 3,687 |
|---|---|
| Vacant | 211 |
| Owner Occupied | 82.2% |
| Renter Occupied | 17.8% |
| Avg HH Size | 2.68 |
ZIP code 98611 is located in Castle Rock, Washington, within Cowlitz County. With a population of 9,367, this is a lightly populated ZIP code with a middle-aged community — the median age is 44.1 years. Economically, 98611 is a middle-income ZIP code: the median household income of $81,630 is near the national average.
Real estate in ZIP code 98611 represents a mid-range housing market. The median home value of $382,000 is above the national average. Renters can expect to pay around $1,348 per month in median rent. Homeownership is strong here — 82.2% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 61% since 2019.
The population of 98611 is primarily White (86.58%). Residents are moderately educated — 27.7% hold a bachelor's degree or higher, which is below the national average. Poverty affects a relatively small share of residents at 7.0%. Household income has grown by 23% since 2019.
The unemployment rate in 98611 stands at 3.8%, which is below the national average. As in most parts of the country, driving alone is the dominant commute mode at 85%.
Overall, ZIP code 98611 in Castle Rock, WA is characterized as middle-income, moderately educated, a middle-aged community, and predominantly owner-occupied. With 9,367 residents, a median household income of $81,630, and a median home value of $382,000, it offers a clear picture of life in this part of Washington.