ZIP Code 83321 — Castleford city, ID Demographics & Data

ZIP code 83321 covers Castleford, ID in Twin Falls County with a population of about 424.

At a glance, the area shows median age of 40.6 versus a U.S. median of about 38.9.

It sits in telephone area codes 208, 986; U.S. House district ID-2; the TWIN FALLS media market.

Median household income in ZIP 83321 is about $54,861 — about 27% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 9.6%; unemployment rate near 2.2%; 31.5% of adults with a bachelor’s degree or higher (about 2.2 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Agriculture, Manufacturing, and Healthcare; about 10.3% of workers reporting work-from-home (about 4.9 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $200,000 — about 43% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $716 (about 38% below the U.S. median rent ($1,163)), and owner-occupancy near 64.9% (roughly in line with the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 83321 in Castleford, ID, a household would need roughly $55,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,285. That is roughly in line with the local median household income ($54,861). Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Castleford city, ID as Relatively Low (composite score 46.9), which is near the middle of the national distribution. The strongest component scores on US5 are wildfire (94.0) and flood (51.1). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Castleford city, ID show little to no average snow and around 10.7 inches of annual precipitation.

IRS migration statistics show a net inflow of about 28 for ZIP 83321 (Castleford city, ID) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.