Zip Code 98626
Kelso, Washington — Cowlitz County
📍 ZIP code 98626 is in Kelso, Cowlitz County, Washington.
ZIP code 98626 is located in Kelso, Cowlitz County, Washington. It is a zip code in the Pacific (PST/PDT) Time Zone with an estimated population of 26,948. The area code for ZIP code 98626 is 360.
Quick Answer
Zip code 98626 is in Kelso, Washington (Cowlitz County). It has a population of 26,948, median household income of $70,058, and median home value of $339,800.
Population
26,948
Income
$70,058
Home Value
$339,800
Climate
79°F / 35°F
About Zip Code 98626
Zip code 98626 is located in Kelso, Washington, within Cowlitz County. Home to approximately 26,948 residents, this area sits at an elevation of 290 ft and falls within the Pacific (PST/PDT) timezone. The local area code is 360.
The median household income is $70,058 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $339,800, and the cost of living index is 104 (4% above the national average of 100).
Summers average a high of 79°F while winters drop to 35°F. The area receives about 48 in of rain and 6 in of snow annually. The zip code covers 136.5 square miles of land area and 0.8 square miles of water.
Key Statistics
26,948
$70,058
$339,800
Pacific (PST/PDT)
360
290 ft
136.5 sq mi
40.4
10,642
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Compare With Nearby Zip Codes
| Metric | 98626 | 98625 | 98611 | 98645 | 97048 | 98632 |
|---|---|---|---|---|---|---|
| City | Kelso, WA | Kalama, WA | Castle Rock, WA | Toutle, WA | Rainier, OR | Longview, WA |
| Population | 26,948 | 7,020 | 9,367 | 2,195 | 7,096 | 50,845 |
| Median Income | $70,058 | $118,536 | $81,630 | $102,664 | $74,453 | $64,705 |
| Home Value | $339,800 | $442,000 | $382,000 | $467,000 | $364,300 | $355,200 |
| Cost of Living | 104 | 145 | 119 | 142 | 109 | 101 |
| Median Age | 40.4 | 50.9 | 44.1 | 52.7 | 48.2 | 39.8 |
Cost of Living
100 = National Average. Kelso's cost of living is 4% above the national average.
vs. State Avg
Above
Affordability
Moderate
Income-to-Home
4.9x
Demographics
Zip code 98626 has a population of 26,948 people with a median age of 40.4. There are 10,642 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Kelso (98626) population trend from 2010 to 2024
↑ 89.2%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
79°F
35°F
48 in
6 in
Kelso experiences mild summers with average highs around 79°F. Winters are mild with lows averaging 35°F. The area receives about 6 in of snow per year.
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Housing & Economy
Median Home Value
$339,800
Median Household Income
$70,058
With 10,642 housing units across 136.5 square miles, 98626 has a housing density of 78 units per square mile. The home price-to-income ratio is 4.9x.
Location & Geography
Latitude
46.1722°
Longitude
-122.7735°
Land Area
136.5 sq mi
Water Area
0.8 sq mi
Nearby Zip Codes
Zip codes closest to 98626 (Kelso, WA) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 98626's $70,058. A way to compare Kelso to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 98626 (Kelso, WA). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Kelso, Washington?
Kelso, Washington uses zip code 98626.
What county is zip code 98626 in?
Zip code 98626 is located in Cowlitz County, Washington.
What is the population of zip code 98626?
The population of zip code 98626 is 26,948 with a median age of 40.4.
Is 98626 in Kelso, Washington?
Yes, zip code 98626 is in Kelso, Cowlitz County, Washington. The area code is 360.
Frequently Asked Questions
What city is zip code 98626 in?
Zip code 98626 is in Kelso, Washington. It is part of Cowlitz County and uses the Pacific (PST/PDT) timezone.
What is zip code 98626?
Zip code 98626 is a U.S. postal code in Kelso, Washington (Cowlitz County). It has a population of 26,948 and covers 136.5 square miles.
What is the population of zip code 98626?
The population of zip code 98626 (Kelso, WA) is 26,948 with a median age of 40.4. There are approximately 10,642 housing units in this area.
What is the median income in zip code 98626?
The median household income in zip code 98626 (Kelso, WA) is $70,058 per year. The cost of living index is 104 (100 = national average).
What is the average home price in zip code 98626?
The median home value in zip code 98626 (Kelso, WA) is $339,800. The cost of living index is 104 compared to the national average of 100.
What county is zip code 98626 in?
Zip code 98626 is located in Cowlitz County, Washington. The primary city is Kelso.
What is the area code for zip code 98626?
Zip code 98626 in Kelso, WA uses area code 360. It is located in the Pacific (PST/PDT) timezone.
Is zip code 98626 a good place to live?
Zip code 98626 (Kelso, WA) has a cost of living index of 104 (100 = national average), a median household income of $70,058, and median home values of $339,800. The median age is 40.4. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 98626?
The cost of living index for zip code 98626 (Kelso, WA) is 104, where 100 represents the national average. This area is above the national average. Median home value: $339,800.
What schools serve zip code 98626?
Zip code 98626 in Kelso, Washington is served by the local school district of Cowlitz County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.