Washington ZIP codes — Washington County, Idaho

Washington County is a mid-size town in Idaho, with 10,866 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates. The median age here is 44.6 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in Washington County earn a median of $53,608 a year, 31.7% below the national figure of $78,538. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 15.3% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Washington County is valued at $250,300, 17.5% below the national figure, while median gross rent runs $919 a month, 34.6% below the national figure, or roughly $11,028 across a full year. A household on the local median income would put about 20.6% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 4.7×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 73.3% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.