ZIP Code 63031 — Florissant city, MO Demographics & Data

ZIP code 63031 covers Florissant, MO in St. Louis County with a population of about 50,258.

At a glance, the area shows median age of 38.1 (near the U.S. median).

It sits in telephone area codes 314, 557; U.S. House district MO-1; the ST. LOUIS media market.

Median household income in ZIP 63031 is about $71,783 — about 4% below the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 10.3%; unemployment rate near 5.7%; 28.0% of adults with a bachelor’s degree or higher (about 5.7 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Healthcare, Retail trade, and Manufacturing; about 12.5% of workers reporting work-from-home (about 2.7 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 $144,500 — about 58% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,080 (about 7% below the U.S. median rent ($1,163)), and owner-occupancy near 71.5% (about 6.1 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 63031 in Florissant, MO, a household would need roughly $40,000 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 $928. That sits below the local median household income ($71,783), 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 Florissant city, MO as Relatively High (composite score 98.7), which is among the highest nationally. The strongest component scores on US5 are flood (97.0) and hurricane (32.1). 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 Florissant city, MO show little to no average snow and around 41.7 inches of annual precipitation.

IRS migration statistics show a net inflow of about 2,272 for ZIP 63031 (Florissant city, MO) 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.