ZIP Code 20879 — Flower Hill CDP, MD Demographics & Data

ZIP code 20879 covers Flower Hill, MD in Montgomery County with a population of about 26,120.

At a glance, the area shows median age of 36.3 versus a U.S. median of about 38.9.

It sits in telephone area codes 227, 240, 301; U.S. House district MD-8; the WASHINGTON, DC (HAGRSTWN) media market.

Median household income in ZIP 20879 is about $105,109 — about 40% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 6.6%; unemployment rate near 6.4%; 41.6% of adults with a bachelor’s degree or higher (about 7.9 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Healthcare, and Retail trade; about 13.2% of workers reporting work-from-home (about 2.0 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 $433,500 — about 25% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,760 (about 51% above the U.S. median rent ($1,163)), and owner-occupancy near 70.8% (about 5.4 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 20879 in Flower Hill, MD, a household would need roughly $119,000 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 $2,785. That is roughly in line with the local median household income ($105,109). 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 Flower Hill CDP, MD as Relatively Moderate (composite score 91.7), which is among the highest nationally. The strongest component scores on US5 are flood (93.7) and hurricane (91.8). 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 Flower Hill CDP, MD show little to no average snow and around 41.3 inches of annual precipitation.

IRS migration statistics show a net inflow of about 1,535 for ZIP 20879 (Flower Hill CDP, MD) 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.