ZIP Code 04421 — Castine CDP, ME Demographics & Data

ZIP code 04421 covers Castine, ME in Hancock County with a population of about 1,222.

At a glance, the area shows median age of 21.0 versus a U.S. median of about 38.9.

It sits in telephone area code 207; U.S. House district ME-2; the BANGOR media market.

Castine, ME sits in a university / college context (near maine maritime academy (1.4 mi)). Expect stronger interest in student housing, rentals, walkability, transit, and a younger adult age mix versus typical suburban ZIPs.

Median household income in ZIP 04421 is about $111,500 — about 48% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 9.3%; unemployment rate near 2.1%; 75.6% of adults with a bachelor’s degree or higher (about 41.9 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Education, Healthcare, and Food services; about 12.7% of workers reporting work-from-home (about 2.5 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 $557,700 — about 60% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,016 (about 13% below the U.S. median rent ($1,163)), and owner-occupancy near 81.5% (about 16.1 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 04421 in Castine, ME, a household would need roughly $154,000 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 $3,583. That is about 38% above the local median household income ($111,500), so the median earner would likely stretch or need a larger down payment. 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 Castine CDP, ME as Relatively Low (composite score 55.0), which is near the middle of the national distribution. The strongest component scores on US5 are hurricane (87.8) and flood (45.2). 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 Castine CDP, ME show little to no average snow and around 48.8 inches of annual precipitation.

IRS migration statistics show a net inflow of about 55 for ZIP 04421 (Castine CDP, ME) 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.