District of Columbia, DC

The USDA Economic Research Service Food Access Research Atlas flags 120 of District of Columbia's 168 census tracts as low-access, covering 384,917 residents of a 671K total population. That translates to a county-wide low food access share of 57.4%, which measures how many people live more than one mile from the nearest supermarket in urban settings or more than ten miles in rural settings. Because District of Columbia classifies tracts using the same distance thresholds the USDA applies nationwide, District of Columbia's figure is directly comparable to peer counties and to the state benchmark.

The food desert signal strengthens when distance is stacked with income. In District of Columbia, 86,548 residents are flagged as low-income and more than one mile from a supermarket (the urban threshold), while 28,849 meet the low-income, ten-mile rural threshold. Those overlapping conditions are the precise combination the USDA uses to designate a food desert tract. Layered context includes a median household income of $101,722, a poverty rate of 15.1%, and SNAP participation covering 40,036 households — roughly 12.7% of the county — drawn from the Census Bureau American Community Survey five-year estimates.

Transportation is the hidden variable behind most food access gaps. About 35.7% of District of Columbia households report no vehicle available, meaning any measured distance to a supermarket translates into a real trip on foot, by transit, or by asking for a ride. Group quarters residents — 4.3% of the population — are counted separately because their food access patterns follow an institution rather than a household. With more than 30% of District of Columbia in a low-access area, the county sits well above the national median and warrants closer review of supermarket siting, SNAP outreach, and transit connections.