ZIP Code 48079 — St. Clair city, MI Demographics & Data

ZIP code 48079 covers St. Clair, MI in St. Clair County with a population of about 12,683.

At a glance, the area shows median age of 44.6 versus a U.S. median of about 38.9.

It sits in telephone area code 810; U.S. House district MI-9; the DETROIT media market.

Median household income in ZIP 48079 is about $80,313 — about 7% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 7.0%; unemployment rate near 4.8%; 25.3% of adults with a bachelor’s degree or higher (about 8.4 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Manufacturing, Healthcare, and Construction; about 8.5% of workers reporting work-from-home (about 6.7 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 $276,600 — about 21% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $937 (about 19% below the U.S. median rent ($1,163)), and owner-occupancy near 82.2% (about 16.8 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 48079 in St. Clair, MI, a household would need roughly $76,000 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 $1,777. That is roughly in line with the local median household income ($80,313). 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 St. Clair city, MI as Relatively Moderate (composite score 82.0), which is elevated versus much of the country. The strongest component scores on US5 are flood (85.9) and hurricane (35.8). 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 St. Clair city, MI show little to no average snow and around 34.9 inches of annual precipitation.

IRS migration statistics show a net inflow of about 496 for ZIP 48079 (St. Clair city, MI) 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.