Greenwich (Cumberland County), New Jersey Demographics & Population 2026

A note before these figures: with a population of 175, Greenwich (Cumberland County)'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

Greenwich (Cumberland County) is a small community located in New Jersey, within Cumberland County. The total population is 175. It ranks as the 669th most populous out of 700 Census-designated places in New Jersey.

Age Demographics

The median age in Greenwich (Cumberland County) is 40.3 years. This is about the same as the state median of 40.1 years.

Economy, Income & Housing

The median household income in Greenwich (Cumberland County) is $125,000. This is 21% higher than the state median of $103,556. It is also 55% higher than the national median of $80,734. The ACS records no residents below the poverty line in Greenwich (Cumberland County). In a community this small the estimate rests on very few survey responses, so it should be read as an absence of measurement rather than a measured absence of poverty. The unemployment rate is 7.0%. This is 11% higher than the state rate of 6.3%. The median home value is $245,500. Housing costs are 46% lower than the state median of $454,400. With a home-value-to-income ratio of just 2.0x, Greenwich (Cumberland County) is one of the most affordable housing markets in the area. 75.8% of occupied housing units are owner-occupied. This homeownership rate is 19% higher than the state average of 63.8%.

Race & Ethnicity

Greenwich (Cumberland County) has a predominantly White (non-Hispanic) population, comprising 96.6% of all residents. Hispanic or Latino residents account for 2.3%. The White (non-Hispanic) population is significantly higher than the state average (96.6% vs 50.9%). The Hispanic or Latino population (2.3%) is well below the state average of 22.5%.

Education

47.9% of residents aged 25 and older hold a bachelor's degree or higher. This is 10% 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, 23.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Greenwich (Cumberland County), 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.