ZIP code 21742

ZIP 21742 is a small city in Washington County, Maryland, with 35,114 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #64 of 477 ranked by population — larger than 86% of them. The median age here is 41.3 years against 39.1 nationally, a slightly older profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in ZIP 21742 earn a median of $80,533 a year, 2.5% above the national figure of $78,538. Median household income counts every pre-tax dollar arriving at an address — wages, self-employment, Social Security, pensions, interest and public assistance — for everyone living there, so multi-earner households pull the figure up even where individual pay is modest. Poverty reaches 11.3% of residents here, below the 12.4% national rate.

The typical owner-occupied home in ZIP 21742 is valued at $280,100, 7.7% below the national figure, while median gross rent runs $1,267 a month, 9.9% below the national figure, or roughly $15,204 across a full year. A household on the local median income would put about 18.9% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 3.5×, against roughly 3.9× nationally, so buying is easier here than in the average US market. 66.6% of occupied homes are owner-occupied versus 65% nationally, so the market leans toward owners. Gross rent folds in the utilities a tenant pays separately, so it is closer to the real monthly outlay than a headline rent figure.

No figure on this page is estimated by us; each one comes straight from the published ACS tables for this area. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

ZIP 21742 is tabulated inside Washington County, Maryland, one of 18 ZIP areas the Census publishes for that county and 477 across Maryland. This is a dense urban ZIP, where a single postal boundary can hold more residents than an entire rural county. County assignment on this page follows the largest share of the ZIP's land area, which matters where a delivery route crosses a county line: mail addressed to 21742 can be handled by a post office in a neighbouring county even though the tabulation area is filed here.

Against its own county, 21742 reports a median household income of $80,533, 4% below the $83,542 county median, and 23% below the $104,338 typical MD ZIP. Owner-occupied homes are valued at a median of $280,100, close to the county figure and 30% below the statewide ZIP median. Rent is reported gross — the contract amount plus tenant-paid utilities — at $1,267 a month, which is why it reads higher than the advertised rent on a listing for the same unit.

Maryland charges 6% statewide, and no local sales tax is layered on top, so the state rate is the full amount collected in 21742.

Everything above comes from the Census Bureau American Community Survey 2019-2023 ACS 5-year estimates for this ZIP Code Tabulation Area, with sales tax rates traced to the state revenue agency. Five-year estimates pool sixty months of responses, so they are stable enough to compare 21742 with its neighbours but always trail the current year, and any value the Census suppressed for sample size is shown as unpublished rather than filled in with a model.