States › Idaho › Boundary County › ZIP 83847
ZIP code
ZIP 83847
FHFA notes: The FHFA HPI is a broad measure of the movement of single-family house prices. The FHFA HPI is a weighted, repeat-sales index, meaning that it measures average price changes in repeat sales or refinancings on the same properties. FHFA describes its ZIP code indexes as developmental: they may be revised as new data arrive or methods change, and the index does not give a dollar value for any home.
ZIP code 83847 is in Boundary County, Idaho. FHFA's index for it begins in 2013; through 2025 it stands at 257, meaning prices in repeat sales of the same homes are up +157.0% since 2013.
Over the ten years to 2025 the index rose +139.8%, about +9.1% a year: below Boundary County (+151.4%), below Idaho (+149.0%) and well above the national index (+85.0%).
Building activity is measured at county level: Boundary County authorised 43 housing units in the 12 months to August 2026, 3.1 per 1,000 residents, 40% of them single-family.
Same span, five levels
| Change in the FHFA index | ZIP 83847 | Boundary County | Metro area | Idaho | United States |
|---|---|---|---|---|---|
| 1 year (2024–2025) | — | +1.7% | — | +2.3% | +2.8% |
| 5 years (2020–2025) | +60.3% | +62.7% | — | +56.6% | +47.0% |
| 10 years (2015–2025) | +139.8% | +151.4% | — | +149.0% | +85.0% |
| 20 years (2005–2025) | — | +175.8% | — | +170.1% | +79.1% |
| Since 2000 | — | +277.8% | — | +266.3% | +158.3% |
| Since 2013 | +157.0% | +171.0% | — | +181.5% | +105.1% |
| 10-year annualised | +9.1% | +9.7% | — | +9.6% | +6.3% |
| 20-year annualised | — | +5.2% | — | +5.1% | +3.0% |
Every column uses FHFA's annual all-transactions index family and the same start and end years, so the figures are directly comparable. A dash means the level has no index for that span.
Decade by decade
| Decade | Change | United States | |
|---|---|---|---|
| 2020s so far (2020–2025) | +60.3% | +47.0% |
FHFA reports each index with a value of 100 in its base period, the first year the area has enough transactions (2013 here). A decade's change is the index at the end of the decade divided by the index at the start, so it does not depend on the base year; the United States column covers the same years. Decades before 2013 are not shown.
Peak-to-low declines
Falls of 5% or more from a previous high in the annual index, and the year the earlier peak was regained.
No decline of 5% or more from a peak appears in the annual index for this area.
Building permits in Boundary County
Permits are reported by county and by permit-issuing place, not by ZIP code. Housing units authorised in Boundary County, latest 12 months.
Housing units authorised in Boundary County by month, Sep 2025 to Aug 2026single-family2+ unit buildings
Full permit history and every city in Boundary County
Other ZIP codes in Boundary County
Ranked by ten-year change in the FHFA index; ZIP 83847 ranks 3 of 3 with an index through 2025.
| ZIP | 1 year | 10 years | Since 2000 | Index through |
|---|---|---|---|---|
| 83805 | +2.2% | +156.8% | +284.4% | 2025 |
| 83845 | −3.1% | +150.2% | — | 2025 |
All 3 ZIP codes in Boundary County
Questions and answers
How much have home values in ZIP 83847 risen over 10 years?
The FHFA house price index for 83847 rose +139.8% between 2015 and 2025, about +9.1% a year compounded. Over five years the change was +60.3% and over one year —.
How does 83847 compare with Boundary County?
Over the same ten years to 2025, Boundary County rose +151.4%, Idaho +149.0% and the United States +85.0%, against +139.8% for the ZIP. Among 3 ZIP codes in the county with an index through 2025, 83847 ranks 3 by ten-year change.
What happened to prices in 83847 after 2007?
The index for 83847 starts in 2013, after the 2007–2009 recession, so it does not record that period.
How many homes are being built in 83847?
Building permits are published by place and county, not by ZIP. Boundary County authorised 43 housing units in the 12 months to August 2026, −8.5% on the previous 12 months. The county page lists permits by month and by city.
Where does the index for this ZIP come from?
From the Federal Housing Finance Agency's annual five-digit ZIP code house price index (all-transactions), last updated March 31, 2026. FHFA labels the ZIP-level indexes developmental: they are calibrated on appraisal values and sales prices for mortgages bought or guaranteed by Fannie Mae and Freddie Mac, and may be revised. The index tracks price changes for the same homes over time; it does not give a dollar value for any home.
Provenance
Index: Federal Housing Finance Agency, annual house price index for five-digit ZIP codes (all-transactions, developmental), last updated March 31, 2026, values 2013–2025, public domain. County, state and national comparison series are FHFA's annual indexes for those levels from the same release. ZIP to county assignment uses the Census Bureau's 2020 ZCTA-to-county relationship file (largest land share); county to metro uses OMB's July 2023 delineations. Permits: Census Bureau Building Permits Survey through August 2026. Errors in processing are corrected at the next build; see corrections. FHFA HPI datasets.