ZIP Code 83431 — Lewisville city, ID Demographics & Data

ZIP code 83431 covers Lewisville, ID in Jefferson County with a population of about 1,066.

At a glance, the area shows median age of 36.7 versus a U.S. median of about 38.9.

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

Median household income in ZIP 83431 is about $81,667 — about 9% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 12.7%; unemployment rate near 6.0%; 20.9% of adults with a bachelor’s degree or higher (about 12.8 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Education, Agriculture, and Professional services; about 5.3% of workers reporting work-from-home (about 9.9 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 $238,600 — about 31% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $600 (about 48% below the U.S. median rent ($1,163)), and owner-occupancy near 80.8% (about 15.4 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 83431 in Lewisville, ID, a household would need roughly $66,000 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 $1,533. That sits below the local median household income ($81,667), suggesting the typical household income is closer to a workable buy-in level under these assumptions. 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 Lewisville city, ID as Very Low (composite score 40.1), which is near the middle of the national distribution. The strongest component scores on US5 are wildfire (62.5) and flood (37.1). 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 Lewisville city, ID show little to no average snow and around 13.5 inches of annual precipitation.

IRS migration statistics show a net inflow of about 70 for ZIP 83431 (Lewisville 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.