Jefferson County · Idaho
ZIP code 83431
- Population
- 1,066
- Median income
- $81,667
- Median home
- $238,600
- Sales tax
- 6%
ZCTA residents
Household, past 12 months
Owner-occupied value
Idaho state rate
Quick answer
ZIP 83431 sits in Jefferson County, Idaho and is home to 1,066 people. Median household income is $81,667, the median home is worth $238,600 and median gross rent is $800. 80.8% of households own their home, and purchases are taxed at 6% (Idaho state rate).
- County
- Jefferson County
- State
- Idaho (ID)
- Area codes
- Not published
- Metro area
- Outside covered metros
FIPS 16051
280 ZIPs covered
No NANPA match for this ZIP
Rate jurisdiction used for tax
The numbers for 83431
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 1,066ZIP 83431 residents
- Median household income
- $81,667Past 12 months, inflation adjusted
- Median home value
- $238,600Owner-occupied units
- Median gross rent
- $800Rent plus utilities, monthly
- Median age
- 36.7 yrsAll residents
- Homeownership rate
- 80.8%Owner-occupied households
Sales tax in 83431
What a purchase inside this ZIP costs at checkout.
Idaho levies 6% 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.
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 83431 compares
ZIP 83431 against the median ZIP in Jefferson County and across Idaho.
| Measure | ZIP 83431 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $81,667 | $81,667 | $68,377 | +19% |
| Median home value | $238,600 | $222,400 | $296,900 | -20% |
| Median gross rent | $800 | $1,098 | $940 | -15% |
| Population | 1,066 | 1,239 | 1,358 | -22% |
Medians are computed across the 7 ZIP areas in Jefferson County and the 280 ZIP areas in Idaho.
Statewide rank
Where this ZIP places among all 280 Idaho ZIP areas.
- Income
- #56
- Home value
- #183
- Population
- #153
richer than 78% of 250 state ZIPs
above 27% of 249 state ZIPs
larger than 45% of 280 state ZIPs
Comparable ZIP codes
Idaho ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Jefferson County.
ZIP 83431 questions
Common questions about this ZIP code.
- Where is ZIP code 83431?
- ZIP 83431 lies mostly in Jefferson County, Idaho. 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 83431?
- Idaho charges 6% statewide, plus any county, city or district rate that applies locally.
- Is 83431 expensive to live in?
- Median rent runs $800 a month, about 12% of median household income, and the median home is worth $238,600 — -20% against the typical Idaho 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.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Idaho State Tax Commission — Sales tax rates and local add-ons
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.