ZIP Code 21133 — Randallstown CDP, MD Demographics & Data

ZIP code 21133 covers Randallstown, MD in Baltimore County with a population of about 31,847.

At a glance, the area shows median age of 47.5 versus a U.S. median of about 38.9.

It sits in telephone area codes 410, 443, 667; U.S. House district MD-2; the BALTIMORE media market.

Median household income in ZIP 21133 is about $84,248 — about 12% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 8.8%; unemployment rate near 7.2%; 34.6% of adults with a bachelor’s degree or higher (roughly in line with the national share (33.7%)).

Labor and commute patterns include leading industry context around Healthcare, Public administration, and Transportation; about 11.3% of workers reporting work-from-home (about 3.9 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 $302,000 — about 13% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,312 (about 13% above the U.S. median rent ($1,163)), and owner-occupancy near 69.1% (about 3.7 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 21133 in Randallstown, MD, a household would need roughly $83,000 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 $1,940. That is roughly in line with the local median household income ($84,248). 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 Randallstown CDP, MD as Relatively High (composite score 95.0), which is among the highest nationally. The strongest component scores on US5 are flood (94.3) and hurricane (92.3). 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 Randallstown CDP, MD show little to no average snow.

IRS migration statistics show a net inflow of about 1,871 for ZIP 21133 (Randallstown 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.