Oak Grove (Washington County), Tennessee Demographics & Population 2026

Population Overview

Oak Grove (Washington County) is a small community located in Tennessee, within Washington County. The total population is 4,626. It ranks as the 122nd most populous out of 502 Census-designated places in Tennessee.

Age Demographics

The median age in Oak Grove (Washington County) is 47.0 years. This is 21% higher than the state median of 38.9 years.

Economy, Income & Housing

The median household income in Oak Grove (Washington County) is $72,143. This is 4% higher than the state median of $69,595. It is also 11% lower than the national median of $80,734. The poverty rate stands at 7.0%. This is 49% lower than the state poverty rate of 13.8%. The unemployment rate is 7.4%. This is 58% higher than the state rate of 4.7%. The median home value is $260,600. Housing costs are 9% lower than the state median of $286,700. The home-value-to-income ratio is 3.6x. 63.7% of occupied housing units are owner-occupied. This homeownership rate is 5% lower than the state average of 66.9%.

Race & Ethnicity

Oak Grove (Washington County) has a predominantly White (non-Hispanic) population, comprising 91.5% of all residents. Black or African American residents account for 3.3%. The Black or African American population (3.3%) is well below the state average of 15.4%. The Hispanic or Latino population (1.2%) is well below the state average of 7.4%.

Education

35.5% of residents aged 25 and older hold a bachelor's degree or higher. This is 14% higher than the state rate of 31.1%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 93.7%. Notably, 15.3% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Oak Grove (Washington County), Tennessee 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 Tennessee state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 502 Census-designated places in Tennessee. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.