Plymouth CDP, Massachusetts Demographics & Population 2026

Population Overview

Plymouth CDP is a small city located in Massachusetts. The total population is 7,852. It ranks as the 93rd most populous out of 248 cities and towns in Massachusetts.

Age Demographics

The median age in Plymouth CDP is 44.6 years. This is 12% higher than the state median of 40.0 years. Only 12.3% of residents are under 18, indicating fewer families with children. 11.3% 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 Plymouth CDP is $72,639. This is 28% lower than the state median of $101,341. Compared to the national median of $78,538, household income here is 8% lower. The poverty rate stands at 8.6%. This is 13% lower than the state poverty rate of 10.0%. The unemployment rate is 5.9%. This is 14% higher than the state rate of 5.1%. The median home value is $426,000. Housing costs are 19% lower than the state median of $525,800. The home-value-to-income ratio is 5.9x. 49.6% of occupied housing units are owner-occupied. This homeownership rate is 21% lower than the state average of 62.6%.

Race & Ethnicity

The largest racial or ethnic group in Plymouth CDP is White (non-Hispanic), making up 80.3% of the population. Hispanic or Latino residents account for 7.7%. The Black or African American population (0.9%) is well below the state average of 6.5%. The Asian population (0.7%) is well below the state average of 7.0%.

Education

38.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 18% lower than the state rate of 46.6%. Nationally, 35.0% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 91.4%. Notably, 15.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Plymouth CDP, Massachusetts is sourced from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates (2019-2023). The ACS collects data from approximately 3.5 million households annually, providing reliable estimates for communities of all sizes. Comparisons are made against Massachusetts state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 248 Census-designated places in Massachusetts. For official data, visit data.census.gov.