Marlboro, New Jersey Demographics & Population 2026

A note before these figures: with a population of 76, Marlboro'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

Marlboro is a small community located in New Jersey, within Cumberland County. The total population is 76. It ranks as the 694th most populous out of 700 Census-designated places in New Jersey.

Age Demographics

The median age in Marlboro is 47.4 years. This is 18% higher than the state median of 40.1 years. Only 5.3% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Marlboro is $106,750. This is 3% higher than the state median of $103,556. It is also 32% higher than the national median of $80,734. The poverty rate stands at 6.6%. This is 32% lower than the state poverty rate of 9.7%. The unemployment rate is 8.8%. This is 39% higher than the state rate of 6.3%. The median home value is $225,000. Housing costs are 50% lower than the state median of $454,400. With a home-value-to-income ratio of just 2.1x, Marlboro is one of the most affordable housing markets in the area. 94.3% of occupied housing units are owner-occupied. This homeownership rate is 48% higher than the state average of 63.8%.

Race & Ethnicity

Marlboro has a predominantly White (non-Hispanic) population, comprising 85.5% of all residents. Hispanic or Latino residents account for 7.9%. The White (non-Hispanic) population is significantly higher than the state average (85.5% vs 50.9%). The Hispanic or Latino population (7.9%) is well below the state average of 22.5%.

Education

11.8% of residents aged 25 and older hold a bachelor's degree or higher. This is among the lowest rates in the state, which may correlate with employment and income patterns. This is 73% lower than the state rate of 43.6%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 89.7%.

Data Sources & Methodology

All demographic data for Marlboro, 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.