Residential delivery area · Washington
ZIP Code 98645: Silverlake, WA
ZIP code 98645 uses the postal name Silverlake, Washington and lies entirely in Cowlitz County (Census 2020 ZIP-county file). About 2,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $101,429 (Census Bureau, ACS 2020-2024). Its land lies outside any incorporated or census-designated place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Silverlake · its only residential ZIP
- County
- Cowlitz County
- Metro area
- Longview-Kelso, WA
- House district
- WA-3 119th Congress
- State
- Washington
- Time zone
- Pacific
- Land area
- 15.2 sq mi · 146 people per sq mi
Where is ZIP code 98645?
98645 centers on 46.332°, -122.760° and covers 15.2 square miles of land plus 2.5 of water. It borders 2 ZIP codes: 98611, 98649.
The map draws ZIP code areas only. For the streets inside 98645, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 98645 compare with the rest of Cowlitz County?
| Measure | 98645 | In Cowlitz County | In WA |
|---|---|---|---|
| People (ACS 2020-2024) | 2,216 | 7th of 12 | 357th of 605 |
| Median household income | $101k | 3rd of 7 | 130th of 363 |
| Median home value | $510k | not ranked | not ranked |
98645's median home value is not ranked: its 90% margin of error (±$139,610) is more than a quarter of the figure ($509,500). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
Its median household income is higher than in 82% of U.S. residential ZIP codes, and it is denser than 59% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 98645?
The 2020 Census counted 1,811 people in 98645; the ACS, which samples households over 2020-2024, estimates 2,216. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 2,216±456 (90% margin)
- 2020 Census count
- 1,811
- Households
- 876
- Median age
- 52.0
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 98645?
Of the 2,216 people the ACS estimates in 98645, 18.3% are under 18 and 35.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.1%), then Other or two or more (10.1%).
- Under 1818.3%
- 18 to 6446.1%
- 65 and older35.6%
- White, not Hispanic85.1%
- Other or two or more10.1%
- Hispanic or Latino3.8%
- Asian, not Hispanic1.0%
- Black, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 98645 earn?
Median household income is $101,429 (ACS 2020-2024), the 3rd highest of the 7 ranked ZIP codes in Cowlitz County.
- Median household income
- $101,429±$23,760
- Income per person
- $50,854
- Below the poverty line
- 9.7%
- Unemployed (of the labor force)
- 5.1%
- Adults 25+ with a bachelor's degree
- 37.5%
- Adjusted gross income per tax return, 2022
- $82,511750 returns; wages 66% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 98645?
FHFA's house price index for 98645, built from repeat sales and appraisals of the same homes, rose 149% from 2015 to 2025 and rose 40% from 2020 to 2025, and moved −7.1% in 2025.
- Median home value (owners' estimate)
- $509,500
- Median gross rent
- –
- Homes owned by their occupants
- 95.7%
- Housing units
- 925
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 98645?
17 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction3
- Accommodation and food services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 98645?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 98611 | Castle Rock | 9,302 | $86k | 7.0 mi |
| 98649 | Toutle | 929 | $74k | 10.9 mi |
| 98591 | Toledo | 3,965 | $79k | 7.7 mi (near) |
| 98626 | Kelso | 26,892 | $76k | 11.1 mi (near) |
| 98593 | Vader | 1,541 | $84k | 12.9 mi (near) |
| 98542 | Ethel | 625 | $53k | 14.0 mi (near) |
| 98596 | Winlock | 6,950 | $80k | 14.4 mi (near) |
| 98582 | Salkum | 438 | $89k | 14.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.