| ZIP Codes: | 11 ZIP Codes (11 Standard, 0 PO Box, 0 Unique) [See All] |
| Area Codes: | 360 / 564 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:14:15 PM |
| Population: | 117,032 [See All] |
| FIPS: | 53015 |
| CBSA: | Longview-Kelso, WA |
| Land Area: | 1,495 sq mi |
| Water Area: | 32 sq mi |
| Coordinates: | 46.1749, -122.6995 |
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117,032 residents live across 11 ZIPs covering 1,495 sq mi, served by 11 distinct USPS-recognized cities.
Population moved from 104,574 to 117,032 from 2014 to 2024 — a +11.9% change. 8 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 98625 (Kalama, $116,435 median) and poorest ZIP 98632 (Longview, $66,305) are 23.2 miles apart — a 1.8× income gap across local geography.
Median home values vary 1.5× across this county — from $368,900 in 98626 (Kelso) to $538,000 in 98674 (Woodland).
Density varies 134× across the county — from 3 people/sq mi in 98649 (Toutle) to 355 in 98632 (Longview).
Educational attainment ranges from 14.6% bachelor's+ in 98649 (Toutle) to 37.5% in 98645 (Silverlake) — the breadth of educational profiles across the area.
Within Washington, this is the #12 most populous of 39 counties and ranks #19 for median household income with the #21 fastest decade growth .
Weighted by population, the typical household earns about $78,268 across the county — reflecting what a typical resident sees, not a simple ZIP average.
17.5% of adults age 25+ hold a bachelor's degree or higher (14,237 of 81,382 reporting).
11 Standard delivery, 0 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 98632 | Longview | Standard | 50,635 | $66,305 | 142.6 | 4.1% |
| 98626 | Kelso | Standard | 26,892 | $75,528 | 187.1 | 10.4% |
| 98674 | Woodland | Standard | 17,525 | $94,245 | 93.1 | 56.8% |
| 98611 | Castle Rock | Standard | 9,302 | $86,322 | 128.2 | -7.2% |
| 98625 | Kalama | Standard | 7,655 | $116,435 | 83.8 | 16.2% |
| 98645 | Silverlake | Standard | 2,216 | $101,429 | 21.4 | 85.8% |
| 98603 | Ariel | Standard | 1,267 | $78,281 | 266.1 | 25.1% |
| 98649 | Toutle | Standard | 929 | $73,750 | 349.9 | -21.4% |
| 98581 | Ryderwood | Standard | 419 | $43,009 | 37.3 | 94.0% |
| 98616 | Cougar | Standard | 192 | — | 185.0 | 3.2% |
| 98609 | Carrolls | Standard | 0 | — | 0.1 | — |