Boundary ZIP codes — Boundary County, Idaho

Boundary County is a mid-size town in Idaho, with 12,695 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates. The median age here is 42.8 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 Boundary County earn a median of $62,438 a year, 20.5% below the national figure of $78,538. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 17.2% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Boundary County is valued at $344,100, 13.4% above the national figure, while median gross rent runs $867 a month, 38.3% below the national figure, or roughly $10,404 across a full year. A household on the local median income would put about 16.7% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 5.5×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 78% 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.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. 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.