NOTE: Gray indicates insufficient data or a suppressed estimate.
The D.C. urban core exhibits the smallest average household sizes in the metro area, with zip codes in and around downtown Washington falling below 1.8 persons per household, reflecting the concentration of single-occupant apartments and young professionals. A pronounced ring of larger households (3.0–3.5+) extends through the outer suburban corridors, particularly in the northwestern Montgomery County area, parts of Prince William County south of Manassas, and scattered zip codes in eastern Prince George's County near and beyond Bowie. Notable high-density pockets of yellow (3.5+) appear in specific zip codes in the upper northeast corner of the metro and along the southern fringe, likely corresponding to areas with larger immigrant families or multi-generational housing arrangements.
Data: U.S. Census Bureau, 2023 ACS
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