Property Tax in Cowlitz County, Washington

What the Cowlitz County numbers mean

The median is the midpoint of the county's actual bills: half of Cowlitz County homeowners pay more than $2,988 a year and half pay less. The exact bill for any one home depends on its assessed value, exemptions, and which school, municipal and special districts cover it.

Set against the median home value of $367,400, the median bill works out to a derived effective rate of 0.81%. That rate is an estimate computed from the two medians — no county publishes a rate calculated this way — but it adjusts for home prices, which makes comparisons between counties more meaningful.

Cowlitz County by the numbers

*Estimate derived from Census medians (tax ÷ value), not an official rate.

Cowlitz County at a glance

• Median tax rank in Washington: #18 of 39 counties
• Median home value rank in Washington: #22 of 39
• Population rank in Washington: #12 of 39 (111,539 residents)
• Population density rank: #12 of 39 (98 people per square mile)
• Land area rank in Washington: #28 of 39 (1,141 sq mi, 1.7% of the combined county land area)
• Median tax as a monthly figure: $249; per $1,000 of home value: $0.81

How Cowlitz County compares

Of the 39 Washington counties with published data, 17 have a higher median property tax bill than Cowlitz County's $2,988, putting the county at #18 in the state. Its bill is about 31% lower than the state median of $4,361 and about the same as the national median of $2,969.

Rates and values pull in opposite directions: an expensive housing market can produce big bills at ordinary rates. Here the derived rate is 0.81%, versus 0.98% derived nationally, and the median home value ranks #22 within Washington.

Some extra context for Cowlitz County: the median bill works out to about $249 a month, and the derived rate equals roughly $813 of tax per $100,000 of home value. The county is home to 111,539 people — the #12 most populous county in Washington, spread over 1,141 square miles, a density of about 98 people per square mile. Its median home value, $367,400, ranks #22 among the state's 39 counties with data.

Zooming out: of 3133 counties nationwide with published Census figures, only 442 record a higher median tax bill than Cowlitz County — it sits in the top 14% nationally. The county holds roughly 1.4% of Washington's people. Its homes are worth less than the state norm (median $367,400 versus $519,800), and a decade at the derived rate of 0.81% adds up to about 8.13% of the median home's value in tax. The cheapest county in the state, Garfield County, medians $1,306 — $1,682 less than Cowlitz County per year.

Counties nearest Cowlitz County in the Washington ranking

Cowlitz County and its population peers

For a like-for-like sense of scale, compare Cowlitz County with its national population peers: the counties nearest to its 111,539 residents, listed in the table below with their own Census medians. Of the 9 counties in that group, Cowlitz County's median bill of $2,988 is #3 of 9.

The closest population match is Hardin County, Kentucky (111,452 residents), where the median real estate tax paid is $1,451 on a median home value of $205,900 — $1,537 more than Cowlitz County pays.

Inside Washington itself, the counties closest to Cowlitz County in population are Benton County (210,224 residents, median tax $2,910 on a median value of $369,400); Skagit County (130,407 residents, median tax $4,008 on a median value of $486,200); Grant County (100,428 residents, median tax $2,268 on a median value of $275,700); Franklin County (97,676 residents, median tax $2,638 on a median value of $345,700). Same state, same broad tax framework — yet the median bills still differ, because assessed values and the mix of county, municipal and school-district rates are set locally.

How the tax is worked out

Think of the final bill as three ingredients: the assessed value of the property, the exemptions subtracted from it, and the combined rate of every district the property sits in. Cowlitz County's medians imply a derived rate of 0.81%; applied illustratively, a $400,000 home would owe about $3,252 a year, or around $271 a month spread evenly. Individual properties depart from the illustration in both directions.

Illustrative bills in Cowlitz County at the derived rate

The derived rate of 0.81% is only an estimate built from medians, but applying it to different home values gives a sense of scale for Cowlitz County — and a quick way to compare with the state derived rate of 0.84% and the US figure of 0.98%:

Illustration only: real bills are computed from the assessed value, exemptions, and the combined rates of the property's actual taxing districts.

Checking your assessment in Cowlitz County

If your bill looks wrong, work through these steps:

1. Get your property record card from the assessor and check the basics — living area, lot size, bedrooms, condition, and any exemptions you should have.
2. Compare your assessed value with recent sale prices of similar homes in Cowlitz County.
3. Talk to the assessor's office informally first; clear errors are often fixed without a hearing.
4. If needed, file a formal appeal with the local review board before the deadline on your assessment notice, with your evidence attached.
5. Keep paying the bill as issued while the appeal runs, unless your notice says otherwise — unpaid taxes accrue penalties regardless of an appeal.

More Washington counties

• Grant County, WA — $2,268
• Franklin County, WA — $2,638
• Skagit County, WA — $4,008
• Island County, WA — $3,765
• Lewis County, WA — $2,433
• Chelan County, WA — $3,235

Frequently asked questions