Ammon, ID population, income and ZIP codes

Ammon city is a mid-size town in Idaho, with 18,496 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #15 of 236 ranked by population — larger than 94% of them. The median age here is 32.5 years against 39.1 nationally, a distinctly younger profile, typical of places with students, military posts or a fast-growing family population. 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 Ammon city earn a median of $84,154 a year, 7.2% above the national figure of $78,538 and 32% above the $63,864 median for the 100 Idaho cities we cover. 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 5.3% of residents here, less than half the 12.4% national rate.

The typical owner-occupied home in Ammon city is valued at $336,500, 10.9% above the national figure and 24% above the $271,500 peer median, while median gross rent runs $1,175 a month, 16.4% below the national figure, or roughly $14,100 across a full year. A household on the local median income would put about 16.8% 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 4×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 70.4% 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.

All values below were released by the Census for this exact geography, with no gap-filling on our side. 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.