ZIP Code 03809 — Alton CDP, NH Demographics & Data

ZIP code 03809 covers Alton, NH in Belknap County with a population of about 3,684.

At a glance, the area shows median age of 54.3 versus a U.S. median of about 38.9.

It sits in telephone area code 603; U.S. House district NH-1; the BOSTON (MANCHESTER) media market.

Median household income in ZIP 03809 is about $92,278 — about 23% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 4.3%; unemployment rate near 2.9%; 31.8% of adults with a bachelor’s degree or higher (about 1.9 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Education, Retail trade, and Healthcare; about 9.0% of workers reporting work-from-home (about 6.2 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 $331,900 — about 5% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $616 (about 47% below the U.S. median rent ($1,163)), and owner-occupancy near 89.0% (about 23.6 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 03809 in Alton, NH, a household would need roughly $91,000 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 $2,132. That is roughly in line with the local median household income ($92,278). 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 Alton CDP, NH as Relatively Low (composite score 57.4), which is near the middle of the national distribution. The strongest component scores on US5 are hurricane (78.4) and flood (70.3). 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 Alton CDP, NH show little to no average snow and around 45.6 inches of annual precipitation.

IRS migration statistics show a net inflow of about 173 for ZIP 03809 (Alton CDP, NH) 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.