ZIP Code 20121 — Bull Run CDP, VA Demographics & Data

ZIP code 20121 covers Bull Run, VA in Fairfax County with a population of about 27,507.

At a glance, the area shows median age of 35.5 versus a U.S. median of about 38.9.

It sits in telephone area codes 571, 703; U.S. House district VA-10; the WASHINGTON, DC (HAGRSTWN) media market.

Median household income in ZIP 20121 is about $133,024 — about 77% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 6.2%; unemployment rate near 3.6%; 53.0% of adults with a bachelor’s degree or higher (about 19.3 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Education, and Retail trade; about 19.1% of workers reporting work-from-home (about 3.9 points above 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 $488,200 — about 40% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,077 (about 79% above the U.S. median rent ($1,163)), and owner-occupancy near 71.0% (about 5.6 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 20121 in Bull Run, VA, a household would need roughly $134,000 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 $3,136. That is roughly in line with the local median household income ($133,024). 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 Bull Run CDP, VA as Very Low (composite score 5.3), which is relatively lower than many U.S. communities. The strongest component scores on US5 are hurricane (62.2) and flood (13.5). 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 Bull Run CDP, VA show little to no average snow.

IRS migration statistics show a net inflow of about 1,552 for ZIP 20121 (Bull Run CDP, VA) 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.