Idaho

Washington County

ZIP 83645

10,866 residents65 permits TTM$53,608 median HHI3 ZIP codesUpdated April 16, 2026
Investor first look

Median home value

$250,300

ACS 5-Year

Cap rate proxy

4.4%

FMR × 0.65 ÷ Home Value

Rent-to-income

20.6%

HUD FMR ÷ ACS HHI

Net migration

+1.70%

IRS SOI

Permits (TTM)

65

Census BPS

Climate risk

30.3

FEMA NRI (0–100)

ZIP 83645

Median home value

$250,300

Gross yield

5.4%

Cap rate

4.4%

Rent gap

18.5%

Affordability

P/I: 4.7R/I:

Section 8 detail

SAFMR: $1,127Rent: $919Gap: 22.6%
ZIP code breakdown3 ZIP codes

Numbers repeat across most ZIPs in this county

ZIP-level home-value data isn't published for rural areas. Federal sources (Census ACS, HUD non-metro FMR) are available at the county level only, so home-value, cap-rate, and rent-gap numbers use the county estimate for every ZIP in the county.

ZIPMedian home valueRent (FMR 2BR)Gross yieldCap rateRent gap
83610$250,300county est.$1,1275.4%4.4%18.5%
83645$250,300county est.$1,1275.4%4.4%18.5%
83672$359,580$1,1273.8%3.1%18.5%

Sort by any column. Click a ZIP for detail. Rent gap: green = HUD FMR above market rent.

Demographics

Owner-occupied

73.3%

Census ACS

Vacancy rate

10.8%

Census ACS

Bachelor's degree +

19.0%

Census ACS

Rent burdened

42.0%

Census ACS (>30% income)

Median age

44.6

Census ACS

Data sources
U.S. Census Bureau — American Community Survey 5-Year Estimates
U.S. Census Bureau — Building Permits Survey
U.S. Department of Housing and Urban Development — Fair Market Rents / Small Area Fair Market Rents (SAFMR)
Internal Revenue Service — Statistics of Income Migration Data
FEMA — National Risk Index
Last updated: April 16, 2026