Jefferson County, Oklahoma Demographics 2026

Population Overview

Jefferson County is located in Oklahoma with a total population of 5,377. It is the 68th most populous county out of 77 in Oklahoma. The county encompasses 8 Census-designated places.

Age Demographics

The median age in Jefferson County is 41.2 years. This is 12% higher than the state median of 36.9 years.

Economy, Income & Housing

The median household income in Jefferson County is $48,750. This is 23% lower than the state median of $63,603. It is also 38% lower than the national median of $78,538. The poverty rate stands at 22.8%. This is 49% higher than the state poverty rate of 15.3%. With more than one in five residents living below the poverty line, economic hardship is a significant challenge for the community. The unemployment rate is 4.1%. This is 16% lower than the state rate of 4.9%. The median home value is $77,500. Housing costs are 58% lower than the state median of $185,900. With a home-value-to-income ratio of just 1.6x, Jefferson County is one of the most affordable housing markets in the area. 72.4% of occupied housing units are owner-occupied. This homeownership rate is 10% higher than the state average of 65.8%.

Race & Ethnicity

The largest racial or ethnic group in Jefferson County is White (non-Hispanic), making up 76.0% of the population. Hispanic or Latino residents account for 10.8%. The Black or African American population (1.4%) is well below the state average of 6.9%. The Asian population (0.1%) is well below the state average of 2.3%.

Education

15.7% of residents aged 25 and older hold a bachelor's degree or higher. This is 43% lower than the state rate of 27.8%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 84.8%.

Data Sources & Methodology

All figures for Jefferson County come from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023), with comparisons drawn against Oklahoma and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.