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Cowlitz County · Washington

ZIP code 98645

Population, income, housing costs and the sales tax rate charged on purchases inside ZIP 98645 — Census 2019-2023 ACS 5-year, no modelled estimates.
Population
2,195

ZCTA residents

Median income
$102,664

Household, past 12 months

Median home
$467,000

Owner-occupied value

Sales tax
6.5%

Washington state rate

Quick answer

ZIP 98645 sits in Cowlitz County, Washington and is home to 2,195 people. Median household income is $102,664, the median home is worth $467,000 and median gross rent is $782. 93.8% of households own their home, and purchases are taxed at 6.5% (Washington state rate).

County
Cowlitz County

FIPS 53015

State
Washington (WA)

605 ZIPs covered

Area codes
Not published

No NANPA match for this ZIP

Metro area
Outside covered metros

Rate jurisdiction used for tax

The numbers for 98645

American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.

Population
2,195ZIP 98645 residents
Median household income
$102,664Past 12 months, inflation adjusted
Median home value
$467,000Owner-occupied units
Median gross rent
$782Rent plus utilities, monthly
Median age
52.7 yrsAll residents
Homeownership rate
93.8%Owner-occupied households

ZIP 98645 in context

How this area compares with national benchmarks.

ZIP 98645 is a small town in Cowlitz County, Washington, with 2,195 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #357 of 605 ranked by population — larger than 41% of them. The median age here is 52.7 years against 39.1 nationally, a markedly older profile that usually tracks retirees staying put and younger households leaving for work. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in ZIP 98645 earn a median of $102,664 a year, 30.7% above the national figure of $78,538. Household income here is measured before tax and pooled across everyone at the address, which is why it reads higher than typical individual earnings in the same area. Poverty reaches 7.4% of residents here, below the 12.4% national rate.

The typical owner-occupied home in ZIP 98645 is valued at $467,000, 53.9% above the national figure, while median gross rent runs $782 a month, 44.4% below the national figure, or roughly $9,384 across a full year. A household on the local median income would put about 9.1% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 4.5×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 93.8% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

A median age of 52.7 puts ZIP 98645 well into retirement-weighted territory, which pulls median household income down even where household wealth is high, because retirement draws are counted differently from wages.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

Reading ZIP 98645 in context

How 98645 sits inside Cowlitz County and Washington.

ZIP 98645 is tabulated inside Cowlitz County, Washington, one of 10 ZIP areas the Census publishes for that county and 605 across Washington. Fewer than 2,500 people are counted here, so the ZIP behaves like a village delivery route rather than a neighbourhood. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 98645 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 98645 reports a median household income of $102,664, 33% above the $77,188 county median, and 27% above the $80,861 typical WA ZIP. Owner-occupied homes are valued at a median of $467,000, 27% above the county figure and 11% above the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $782 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Washington charges 6.5% statewide, and local governments overlapping 98645 may add county, city or special-district levies on top. We publish the state floor for this ZIP rather than guessing a combined figure, because ZIP boundaries and taxing-district boundaries were drawn for different purposes and do not line up.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 98645 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.

Sales tax in 98645

What a purchase inside this ZIP costs at checkout.

Rate applied
6.5%State base rate only
Tax on $100
$7Rounded to the dollar
Tax on $1,000
$65Before any exemptions

Washington levies 6.5% statewide, and counties, cities and special districts inside this ZIP can add their own local rate on top. Check the county page for the local component before you quote a price.

Affordability in this ZIP

Derived from the Census medians above — indicative, not an offer.

Rent burden
9%Median rent ÷ median income
Price-to-income
4.5×Home value ÷ household income
Est. mortgage
$2,423/mo20% down, 30-yr at 6.75%
Poverty rate
7.4%Residents below poverty line

A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.

How 98645 compares

ZIP 98645 against the median ZIP in Cowlitz County and across Washington.

MeasureZIP 98645County medianState medianvs state
Median household income$102,664$77,188$80,861+27%
Median home value$467,000$368,800$421,200+11%
Median gross rent$782$1,142$1,305-40%
Population2,1954,6084,632-53%

Medians are computed across the 10 ZIP areas in Cowlitz County and the 605 ZIP areas in Washington.

Statewide rank

Where this ZIP places among all 605 Washington ZIP areas.

Income

richer than 75% of 556 state ZIPs

#137
Home value

above 60% of 548 state ZIPs

#219
Population

larger than 41% of 605 state ZIPs

#357

Comparable ZIP codes

Washington ZIP areas with almost the same household income.

ZIPCountyIncomeHome valueRent
98047King County$102,723$431,300$1,728
98208Snohomish County$102,546$641,300$1,859
98373Pierce County$102,791$517,600$1,823
98270Snohomish County$102,258$540,000$1,845
98023King County$101,960$545,600$1,875
98686Clark County$101,866$546,100$1,836

Nearby ZIP codes

Other ZIP codes filed under Cowlitz County.

Adjacent ZIP Codes

Other ZIP codes in Cowlitz County, Washington.

ZIP 98645 questions

Common questions about this ZIP code.

Where is ZIP code 98645?
ZIP 98645 lies mostly in Cowlitz County, Washington. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
What sales tax do I pay in 98645?
Washington charges 6.5% statewide, plus any county, city or district rate that applies locally.
Is 98645 expensive to live in?
Median rent runs $782 a month, about 9% of median household income, and the median home is worth $467,000 — +11% against the typical Washington ZIP.
Is a ZCTA the same as a postal ZIP code?
Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.

Related pages for this area.

Sources & transparency

Every figure on this page is a published estimate for ZIP Code Tabulation Area 98645, except the affordability ratios and mortgage estimate, which we derive from those medians and label as estimates.

Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.