East Rocky Hill, New Jersey Demographics & Population 2026

A note before these figures: with a population of 235, East Rocky Hill's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

East Rocky Hill is a small community located in New Jersey, within Somerset County. The total population is 235. It ranks as the 656th most populous out of 700 Census-designated places in New Jersey.

Age Demographics

The median age in East Rocky Hill is 59.2 years. This is 48% higher than the state median of 40.1 years.

Economy, Income & Housing

The median household income in East Rocky Hill is $211,731. This is 104% higher than the state median of $103,556. It is also 162% higher than the national median of $80,734. The poverty rate stands at 0.9%. This is 91% lower than the state poverty rate of 9.7%. This exceptionally low poverty rate indicates strong economic prosperity across the community. The unemployment rate is 19.6%. This is 211% higher than the state rate of 6.3%. The median home value is $844,800. Housing costs are 86% higher than the state median of $454,400. The home-value-to-income ratio is 4.0x. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 57% higher than the state average of 63.8%.

Race & Ethnicity

East Rocky Hill has a predominantly White (non-Hispanic) population, comprising 87.2% of all residents. Black or African American residents account for 1.3%. The White (non-Hispanic) population is significantly higher than the state average (87.2% vs 50.9%). The Black or African American population (1.3%) is well below the state average of 12.2%. The Hispanic or Latino population (0.4%) is well below the state average of 22.5%. The Asian population (0.4%) is well below the state average of 10.1%.

Education

77.1% of residents aged 25 and older hold a bachelor's degree or higher. This places East Rocky Hill in the top 10% of all cities in the state for educational attainment. This is 77% higher than the state rate of 43.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. No surveyed resident aged 25 or older reported leaving school before earning a high school diploma, though a rate of exactly 100% reflects the limits of a small sample. Notably, 35.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for East Rocky Hill, New Jersey 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 New Jersey state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 700 Census-designated places in New Jersey. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.