ZIP Code 94511 — Bethel Island CDP, CA Demographics & Data

ZIP code 94511 covers Bethel Island, CA in Contra Costa County with a population of about 2,144.

At a glance, the area shows median age of 54.5 versus a U.S. median of about 38.9.

It sits in telephone area code 925; U.S. House district CA-10; the SAN FRANCISCO - OAK - SAN JOSE media market.

Median household income in ZIP 94511 is about $78,393 — about 4% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 29.8%; unemployment rate near 31.1%; 21.6% of adults with a bachelor’s degree or higher (about 12.1 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Construction, Food services, and Wholesale trade; about 10.1% of workers reporting work-from-home (about 5.1 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 $549,500 — about 58% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,215 (about 4% above the U.S. median rent ($1,163)), and owner-occupancy near 71.8% (about 6.4 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 94511 in Bethel Island, CA, a household would need roughly $151,000 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 $3,530. That is about 93% above the local median household income ($78,393), 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 Bethel Island CDP, CA as Very High (composite score 99.5), which is among the highest nationally. The strongest component scores on US5 are flood (99.5) and wildfire (97.6). 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 Bethel Island CDP, CA show little to no average snow and around 12.6 inches of annual precipitation.

IRS migration statistics show a net inflow of about 106 for ZIP 94511 (Bethel Island CDP, CA) 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.