Gem ZIP codes — Gem County, Idaho

Gem County is a mid-size town in Idaho, with 19,854 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 Gem County earn a median of $66,245 a year, 15.7% below the national figure of $78,538. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 10.4% of residents here, below the 12.4% national rate.

The typical owner-occupied home in Gem County is valued at $367,300, 21.1% above the national figure, while median gross rent runs $887 a month, 36.9% below the national figure, or roughly $10,644 across a full year. A household on the local median income would put about 16.1% 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. 76.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

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.