Property Tax in Twin Falls County, Idaho
Homeowners in Twin Falls County, Idaho pay a median of $1,951 a year in real estate taxes, on a median home value of $292,700. Those are the Census Bureau's published medians for the county (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023) — the typical bill and the typical home value for owner-occupied households.
What the Twin Falls County numbers mean
The median is the midpoint of the county's actual bills: half of Twin Falls County homeowners pay more than $1,951 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 $292,700, the median bill works out to a derived effective rate of 0.67%. 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.
Twin Falls County by the numbers
| Measure | Twin Falls County | Idaho | United States |
|---|---|---|---|
| Median real estate taxes paid | $1,951 | $2,006 | $2,969 |
| Median home value | $292,700 | $376,000 | $303,400 |
| Derived effective rate* | 0.67% | 0.53% | 0.98% |
| Median tax per month | $163 | $167 | $247 |
*Estimate derived from Census medians (tax ÷ value), not an official rate.
Twin Falls County at a glance
- Median tax rank in Idaho: #8 of 44 counties
- Median home value rank in Idaho: #19 of 44
- Population rank in Idaho: #5 of 44 (92,121 residents)
- Population density rank: #9 of 44 (48 people per square mile)
- Land area rank in Idaho: #13 of 44 (1,921 sq mi, 2.3% of the combined county land area)
- Median tax as a monthly figure: $163; per $1,000 of home value: $0.67
How Twin Falls County compares
Set against its state, Twin Falls County's median bill of $1,951 is about the same as the Idaho median ($2,006). Against the country as a whole it is about 34% lower than the US median ($2,969). That places the county #8 of 44 Idaho counties ranked by median taxes paid.
Remember what drives the ranking: bills follow home values as much as rates. Twin Falls County's median home, at $292,700, ranks #19 by value in Idaho, while its derived rate of 0.67% compares with a derived US figure of 0.98%.
Some extra context for Twin Falls County: the median bill works out to about $163 a month, and the derived rate equals roughly $667 of tax per $100,000 of home value. The county is home to 92,121 people — the #5 most populous county in Idaho, spread over 1,921 square miles, a density of about 48 people per square mile. Its median home value, $292,700, ranks #19 among the state's 44 counties with data.
Nationally, Twin Falls County's median bill of $1,951 ranks #1104 of 3133 counties with published data — inside the top 35% of counties by tax paid. The county accounts for about 4.9% of Idaho's population, its median home value is about 22% below the state median, and at the derived rate the median home would hand over roughly 6.67% of its value in tax across a decade. Within the state, the distance from Twin Falls County to the most expensive county, Ada County ($2,643), is $692 a year.
Counties nearest Twin Falls County in the Idaho ranking
| County | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|
| Teton County, ID | $2,065 | $595,900 | 0.35% |
| Canyon County, ID | $1,996 | $350,300 | 0.57% |
| Bannock County, ID | $1,918 | $267,200 | 0.72% |
| Madison County, ID | $1,813 | $365,000 | 0.50% |
Twin Falls County and its population peers
For a like-for-like sense of scale, compare Twin Falls County with its national population peers: the counties nearest to its 92,121 residents, listed in the table below with their own Census medians. Of the 9 counties in that group, Twin Falls County's median bill of $1,951 is #5 of 9.
| County | Population | Median tax paid | Median home value | Derived rate* |
|---|---|---|---|---|
| St. Clair County, AL | 92,903 | $666 | $218,500 | 0.30% |
| Tuscarawas County, OH | 92,585 | $1,910 | $176,800 | 1.08% |
| Ozaukee County, WI | 92,345 | $4,629 | $368,900 | 1.25% |
| Bowie County, TX | 92,321 | $2,091 | $161,300 | 1.30% |
| Grafton County, NH | 91,759 | $5,624 | $298,500 | 1.88% |
| Rockingham County, NC | 91,585 | $1,230 | $156,000 | 0.79% |
| Victoria County, TX | 91,281 | $2,941 | $197,600 | 1.49% |
| Christian County, MO | 91,229 | $1,878 | $249,700 | 0.75% |
The closest population match is Bowie County, Texas (92,321 residents), where the median real estate tax paid is $2,091 on a median home value of $161,300 — $140 less than Twin Falls County pays.
Twin Falls County's nearest population neighbours within Idaho are Kootenai County (177,736 residents, median tax $2,203 on a median value of $467,400); Bonneville County (127,056 residents, median tax $1,811 on a median value of $327,000); Bannock County (88,457 residents, median tax $1,918 on a median value of $267,200); Madison County (53,578 residents, median tax $1,813 on a median value of $365,000). Comparing them is a reminder that even inside one state's rules, the bill follows local home values and local district rates more than anything decided at the state level.
How the tax is worked out
The bill is built in stages. First the assessor puts a market value on the property. Exemptions — a homestead exemption above all — then reduce the taxable amount. Finally the combined local rate is applied. To see the scale: at the county's derived rate of 0.67%, each $100,000 of value corresponds to about $667 of tax a year, and a $400,000 home to roughly $2,668. Real bills use the official assessment and district rates, not this derived figure, so treat the example as a sense of scale only.
Illustrative bills in Twin Falls County at the derived rate
The derived rate of 0.67% is only an estimate built from medians, but applying it to different home values gives a sense of scale for Twin Falls County — and a quick way to compare with the state derived rate of 0.53% and the US figure of 0.98%:
| Home value | Illustrative tax / year | Per month |
|---|---|---|
| $150,000 | $1,000 | $83 |
| $250,000 | $1,668 | $139 |
| $350,000 | $2,334 | $195 |
| $500,000 | $3,335 | $278 |
| $750,000 | $5,002 | $417 |
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 Twin Falls County
Believe your assessment is too high? The practical order of attack is: obtain your record card and audit it line by line; collect comparable recent sales in Twin Falls County; ask the assessor's office to correct anything plainly wrong; and, if the value still seems off, lodge a formal appeal ahead of the deadline printed on your assessment notice. Windows are short — often 30 to 90 days — and late appeals are usually rejected outright, however strong the case.
More Idaho counties
Frequently asked questions
What is the median property tax in Twin Falls County, Idaho?
The median real estate tax paid in Twin Falls County, Idaho is $1,951 per year, on a median home value of $292,700 (US Census Bureau, American Community Survey (ACS) 5-year estimates, 2023).
What is the effective property tax rate in Twin Falls County, Idaho?
On a derived basis, 0.67%: the county's median tax bill of $1,951 divided by its median home value of $292,700. Because it is calculated from two survey medians, read it as a comparison estimate rather than an official rate.
How does Twin Falls County compare with the rest of Idaho?
Twin Falls County ranks #8 of 44 Idaho counties with published data by median taxes paid. Its median bill of $1,951 is about the same as the Idaho median of $2,006.
How are property taxes calculated in Twin Falls County, Idaho?
Three steps produce the bill: an assessment of market value by the local assessor, a reduction for exemptions you qualify for (a homestead exemption is the common one), and multiplication by the combined rates of the county, municipality, school district and any special districts covering the property. The median result in Twin Falls County is $1,951 of tax on a $292,700 median home value.
Can I appeal my property tax assessment in Twin Falls County, Idaho?
Yes. Request your property record card from the Twin Falls County assessor's office and check it for errors, then compare your assessed value with recent sales of similar homes. If it still looks too high, file a formal appeal with the local review board named on your assessment notice before the deadline printed on the notice — windows are short, often 30 to 90 days.