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County tax profile · 2026 · Census ACS + IRS data

Property Tax & Income in Gilliam County, Oregon

Gilliam County has an effective property tax rate of 1.01%. On the median home value of $189,300, that's roughly $1,904 per year. Median household income is $66,917.

Effective Property Tax Rate1
1.01%
median tax $1,904 ÷ median home $189,300
Median Home Value1
$189,300
owner-occupied
Median Household Income1
$66,917
per-capita $37,790
Est. Annual Tax on Median Home1
$1,904
at 1.01% effective rate

What you'll pay, at a glance

Property taxes are the largest local tax most homeowners pay. The effective rate measures the real tax bill as a share of home value — a more useful number than the nominal “mill rate,” because assessment practices vary county to county.

MetricGilliam CountyOregon (state context)
Effective property tax rate11.01%0.75%
Median home value1$189,300—
State income tax3top rate 9.90%top rate 9.90%
State sales tax30.00% combined0.00% combined

How this is calculated

The effective property tax rate is the median real-estate tax bill divided by the median home value — both for owner-occupied homes, from the U.S. Census Bureau's American Community Survey (ACS 5-year estimates)1. Median income is also from the ACS1. Federal and state income-tax figures use IRS2 and Tax Foundation3 data.

About Gilliam County, OR

Buying a home in Gilliam County means weighing a lower sticker price against a higher tax rate. The median home value here sits at $189,300, and the resulting annual property tax bill comes to about $1,904. That works out to an effective rate of 1.006%, which ranks first among Oregon's 36 counties and sits above the statewide median of 0.746% as well as the national figure of 0.794%. Even so, the actual dollars involved stay contained because prices are low. Households earning the median income of $66,917 would devote roughly 2.8% of that to property taxes. Condon, the county seat, anchors a trio of communities that also includes Arlington and Ione. For a buyer, the tradeoff is straightforward: a comparatively cheap house paired with one of the state's heaviest tax rates.

Frequently asked questions

What is the property tax rate in Gilliam County, OR?
The effective rate is 1.01% — meaning the median tax bill equals about 1.01% of the median home value.
How much are property taxes on a median home?
On the median home ($189,300), the estimated annual bill is about $1,904.
Is Gilliam County's rate high or low?
Compare it to the state median of 0.75% and the national average near 1.1%.
How does the effective rate differ from my mill rate?
A mill rate is the nominal levy per $1,000 of assessed value. The effective rate reflects what you actually pay after exemptions and assessments — it's the median tax bill as a share of median home value, so it better predicts your real cost.
Will a reassessment raise my tax bill?
Not necessarily. If your home's assessed value rises, your bill can go up, but only if the mill rate and exemptions stay flat. Contact the Gilliam County assessor's office to review your current assessment.
Can I appeal my property tax assessment?
Yes. Most counties allow an appeal when you believe the assessed value exceeds the market value. File with the Gilliam County assessor within the local deadline, typically with comparable sales as evidence.
Sources
[1] U.S. Census Bureau — ACS 5-Year (2023) — Median home value (B25077), median real-estate taxes (B25103), median household income (B19013), per-capita income (B19301).
[2] IRS — Statistics of Income — County income, AGI, and real-estate taxes paid.
[3] Tax Foundation — State income, sales, corporate, and estate/inheritance tax rates.