Grenloch, New Jersey Demographics & Population 2026

A note before these figures: with a population of 666, Grenloch'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

Grenloch is a small community located in New Jersey, within Camden County. The total population is 666. It ranks as the 588th most populous out of 700 Census-designated places in New Jersey.

Age Demographics

The median age in Grenloch is 48.2 years. This is 20% higher than the state median of 40.1 years.

Economy, Income & Housing

The median household income in Grenloch is $148,068. This is 43% higher than the state median of $103,556. It is also 83% higher than the national median of $80,734. The poverty rate stands at 9.6%. This is 1% lower than the state poverty rate of 9.7%. The unemployment rate is 4.5%. This is 29% lower than the state rate of 6.3%. The median home value is $238,000. Housing costs are 48% lower than the state median of $454,400. With a home-value-to-income ratio of just 1.6x, Grenloch is one of the most affordable housing markets in the area. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 57% higher than the state average of 63.8%.

Race & Ethnicity

Grenloch has a predominantly White (non-Hispanic) population, comprising 93.2% of all residents. Asian residents account for 1.8%. The White (non-Hispanic) population is significantly higher than the state average (93.2% vs 50.9%). The Black or African American population (1.2%) is well below the state average of 12.2%. The Asian population (1.8%) is well below the state average of 10.1%.

Education

38.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 12% 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 92.9%. Notably, 16.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Grenloch, 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.