Washington Grove, Maryland Demographics & Population 2026

A note before these figures: with a population of 577, Washington Grove's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

Washington Grove is a small community located in Maryland, within Montgomery County. The total population is 577. It ranks as the 373rd most populous out of 527 Census-designated places in Maryland.

Age Demographics

The median age in Washington Grove is 62.2 years. This is 58% higher than the state median of 39.4 years. Only 10.9% of residents are under 18, indicating fewer families with children. 14.6% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The median household income in Washington Grove is $134,583. This is 30% higher than the state median of $103,678. It is also 67% higher than the national median of $80,734. The poverty rate stands at 3.5%. This is 63% lower than the state poverty rate of 9.4%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 3.8%. This is 23% lower than the state rate of 4.9%. The median home value is $612,700. Housing costs are 46% higher than the state median of $419,900. The home-value-to-income ratio is 4.6x. 99.7% of occupied housing units are owner-occupied. This homeownership rate is 47% higher than the state average of 67.6%.

Race & Ethnicity

The largest racial or ethnic group in Washington Grove is White (non-Hispanic), making up 83.9% of the population. Asian residents account for 4.7%. The White (non-Hispanic) population is significantly higher than the state average (83.9% vs 46.6%). The Black or African American population (1.0%) is well below the state average of 28.9%. The Hispanic or Latino population (4.3%) is well below the state average of 12.5%.

Education

77.7% of residents aged 25 and older hold a bachelor's degree or higher. This places Washington Grove in the top 10% of all cities in the state for educational attainment. This is 79% higher than the state rate of 43.5%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 99.4%. Notably, 39.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Washington Grove, Maryland is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Maryland state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 527 Census-designated places in Maryland. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.