Petersham CDP, Massachusetts Demographics & Population 2026

Population Overview

Petersham CDP is a small community located in Massachusetts. The total population is 252. It ranks as the 243rd most populous out of 248 cities and towns in Massachusetts.

Age Demographics

The median age in Petersham CDP is 57.8 years. This is 44% higher than the state median of 40.0 years. Only 7.1% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Petersham CDP is $105,938. This is 5% higher than the state median of $101,341. Compared to the national median of $78,538, household income here is 35% higher. The poverty rate stands at 7.9%. This is 20% lower than the state poverty rate of 10.0%. The unemployment rate is 0.9%. This is 83% lower than the state rate of 5.1%. The median home value is $372,400. Housing costs are 29% lower than the state median of $525,800. The home-value-to-income ratio is 3.5x. 92.0% of occupied housing units are owner-occupied. This homeownership rate is 47% higher than the state average of 62.6%.

Race & Ethnicity

Petersham CDP has a predominantly White (non-Hispanic) population, comprising 92.9% of all residents. Hispanic or Latino residents account for 2.4%. The Hispanic or Latino population (2.4%) is well below the state average of 12.9%.

Education

49.1% of residents aged 25 and older hold a bachelor's degree or higher. This is 5% higher 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 96.0%. Notably, 28.6% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Petersham 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.