ZIP Code 21840 — Nanticoke CDP, MD Demographics & Data

ZIP code 21840 covers Nanticoke, MD in Wicomico County with a population of about 573.

At a glance, the area shows median age of 48.5 versus a U.S. median of about 38.9.

It sits in telephone area codes 410, 443, 667; U.S. House district MD-1; the SALISBURY media market.

Nanticoke, MD reads as a military / base-oriented community on US5’s intent model (elevated veteran share (23.9%) and/or base-related place names). Service members and families often look up Basic Allowance for Housing (BAH) rates, on-base mail (PSC / P.O. Box) addresses, and nearby ZIP demographics when relocating.

US5 shows 2026 DoD BAH locality rates for this ZIP’s Military Housing Area on this page (pay grade × with/without dependents). Treat the table as a planning reference and confirm entitlement with your finance office or the official DTMO BAH lookup.

Median household income in ZIP 21840 is about $120,324 — about 60% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 0.0%; unemployment rate near 19.7%; 17.6% of adults with a bachelor’s degree or higher (about 16.1 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Construction, Manufacturing, and Healthcare; a mean commute of about 180.0 minutes (U.S. average near 26.8).

Housing tenure and rents show owner-occupancy near 78.2% (about 12.8 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for Nanticoke CDP, MD as Relatively Low (composite score 60.8), which is near the middle of the national distribution. The strongest component scores on US5 are hurricane (91.6) and wildfire (80.9). 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 Nanticoke CDP, MD show little to no average snow.

IRS migration statistics show a net inflow of about 34 for ZIP 21840 (Nanticoke 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.