Coos County, New Hampshire Demographics 2026

Population Overview

Coos County is located in New Hampshire with a total population of 31,386. It is the 10th most populous county out of 10 in New Hampshire. The county encompasses 1 Census-designated place.

Age Demographics

The median age in Coos County is 49.9 years. This is 16% higher than the state median of 43.2 years. 10.0% 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 Coos County is $58,439. This is 39% lower than the state median of $95,628. Compared to the national median of $78,538, household income here is 26% lower. The poverty rate stands at 12.9%. This is 80% higher than the state poverty rate of 7.2%. The unemployment rate is 4.1%. This is 23% higher than the state rate of 3.4%. The median home value is $169,600. Housing costs are 54% lower than the state median of $367,200. With a home-value-to-income ratio of just 2.9x, Coos County is one of the most affordable housing markets in the area. 74.0% of occupied housing units are owner-occupied. This homeownership rate is 2% higher than the state average of 72.5%.

Race & Ethnicity

Coos County has a predominantly White (non-Hispanic) population, comprising 92.8% of all residents. Hispanic or Latino residents account for 2.3%. The Asian population (0.3%) is well below the state average of 2.6%.

Education

20.2% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 49% lower than the state rate of 39.8%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 89.5%.