Ocean Bluff-Brant Rock, Massachusetts Demographics & Population 2026

Population Overview

Ocean Bluff-Brant Rock is a small community located in Massachusetts, within Plymouth County. The total population is 4,540. It ranks as the 129th most populous out of 248 Census-designated places in Massachusetts.

Age Demographics

The median age in Ocean Bluff-Brant Rock is 57.6 years. This is 44% higher than the state median of 40.0 years. Only 9.5% of residents are under 18, indicating fewer families with children. 10.3% 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 Ocean Bluff-Brant Rock is $119,310. This is 15% higher than the state median of $103,960. It is also 48% higher than the national median of $80,734. The poverty rate stands at 5.3%. This is 47% lower than the state poverty rate of 10.0%. The unemployment rate is 4.1%. This is 21% lower than the state rate of 5.1%. The median home value is $554,000. Housing costs are 1% lower than the state median of $562,100. The home-value-to-income ratio is 4.6x. 82.2% of occupied housing units are owner-occupied. This homeownership rate is 31% higher than the state average of 62.5%.

Race & Ethnicity

Ocean Bluff-Brant Rock has a predominantly White (non-Hispanic) population, comprising 96.4% of all residents. Hispanic or Latino residents account for 0.7%. The Hispanic or Latino population (0.7%) is well below the state average of 13.3%. The Asian population (0.4%) is well below the state average of 7.2%.

Education

36.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 23% lower than the state rate of 47.3%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 97.8%. Notably, 17.4% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Ocean Bluff-Brant Rock, Massachusetts is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. 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. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.