ZIP codes
10
Cowlitz County, WA Demographics & ZIP Codes
Cowlitz County, Washington demographics and median household income by ZIP code — 10 ZIP codes — population 115,695 — avg. income $78,341 — avg. home value $369,167. Compare income, housing, and ZIP-level data on US5.
Population
115,695
Median household income (avg.)
$78,341
104% of U.S. median
Average home value
$369,167
106% of U.S. median
Average rent
$918
79% of U.S. median
Cowlitz County demographics
Cowlitz County, Washington covers 10 ZIP codes, with a combined ZIP-area population of about 115,695.
Median household income in Cowlitz County
The average median household income across ZIP codes in Cowlitz County, Washington is about $78,341 — about 10% below the WA ZIP average ($87,083), and about 4% above the U.S. median ($75,149).
Among ZIPs with income data, 98625 (Kalama) is near the top at about $118,536, while 98581 (Ryderwood) is near the bottom at about $37,039.
Housing in Cowlitz County
For housing in Cowlitz County, Washington, the average median home value is about $369,167 and the average median rent is about $918.
The most populous ZIP is 98632 (Longview) with about 50,845 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Cowlitz County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 98632 | Longview | Cowlitz County | WA | 50,845 | $64,705 | $355,200 |
| 98626 | Kelso | Cowlitz County | WA | 26,948 | $70,058 | $339,800 |
| 98674 | Woodland | Cowlitz County | WA | 16,765 | $96,081 | $481,100 |
| 98611 | Castle Rock | Cowlitz County | WA | 9,367 | $81,630 | $382,000 |
| 98625 | Kalama | Cowlitz County | WA | 7,020 | $118,536 | $442,000 |
| 98645 | — | Cowlitz County | WA | 2,195 | $102,664 | $467,000 |
| 98603 | — | Cowlitz County | WA | 1,192 | $77,188 | $368,800 |
| 98649 | — | Cowlitz County | WA | 980 | $57,167 | $286,600 |
| 98581 | Ryderwood | Cowlitz County | WA | 383 | $37,039 | $200,000 |
| 98609 | — | Cowlitz County | WA | — | — | — |
Frequently asked questions
What are the demographics of Cowlitz County?
Cowlitz County, Washington has a combined ZIP-area population of about 115,695 across 10 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Cowlitz County?
The average median household income across ZIP codes in Cowlitz County, Washington is about $78,341, about 10% below the state ZIP average ($87,083), and about 4% above the U.S. median ($75,149). Average median home value is about $369,167. Among ZIPs with data, 98625 (Kalama) is near the top ($118,536) and 98581 (Ryderwood) is near the bottom ($37,039).
How many ZIP codes are in Cowlitz County?
Cowlitz County, Washington includes 10 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Cowlitz County?
This page lists ZIP codes in Cowlitz County, Washington with population, median household income, and home value. Select a ZIP for a full demographics profile.