Knox County, Maine Demographics 2026

Population Overview

Knox County is located in Maine with a total population of 40,860. It is the 10th most populous county out of 16 in Maine. The county encompasses 1 Census-designated place.

Age Demographics

The median age in Knox County is 49.2 years. This is 10% higher than the state median of 44.8 years. 10.9% 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 Knox County is $71,903. This is about average than the state median of $71,773. Compared to the national median of $78,538, household income here is 8% lower. The poverty rate stands at 8.8%. This is 19% lower than the state poverty rate of 10.8%. The unemployment rate is 3.9%. The median home value is $290,800. Housing costs are 9% higher than the state median of $266,400. The home-value-to-income ratio is 4.0x. 78.5% of occupied housing units are owner-occupied. This homeownership rate is 6% higher than the state average of 74.0%.

Race & Ethnicity

Knox County has a predominantly White (non-Hispanic) population, comprising 94.1% of all residents. Hispanic or Latino residents account for 1.8%. The Black or African American population (0.4%) is well below the state average of 1.6%. The Asian population (0.4%) is well below the state average of 1.1%.

Education

39.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 11% higher than the state rate of 35.3%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 94.3%.