Mount Hermon, New Jersey Demographics & Population 2026

A note before these figures: with a population of 207, Mount Hermon'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

Mount Hermon is a small community located in New Jersey, within Warren County. The total population is 207. It ranks as the 662nd most populous out of 700 Census-designated places in New Jersey.

Age Demographics

The median age in Mount Hermon is 59.0 years. This is 47% higher than the state median of 40.1 years. 25.1% 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 Mount Hermon is $55,417. This is 46% lower than the state median of $103,556. It is also 31% lower than the national median of $80,734. The poverty rate stands at 15.9%. This is 64% higher than the state poverty rate of 9.7%. The survey records no unemployed residents in Mount Hermon, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $405,200. Housing costs are 11% lower than the state median of $454,400. The home-value-to-income ratio of 7.3x suggests that housing affordability is a significant concern for many residents. 100.0% of occupied housing units are owner-occupied. This homeownership rate is 57% higher than the state average of 63.8%.

Race & Ethnicity

The largest racial or ethnic group in Mount Hermon is White (non-Hispanic), making up 83.6% of the population. Black or African American residents account for 11.6%. The White (non-Hispanic) population is significantly higher than the state average (83.6% vs 50.9%). The Hispanic or Latino population (3.9%) is well below the state average of 22.5%.

Education

17.8% 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 59% 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 87.6%.

Data Sources & Methodology

All demographic data for Mount Hermon, 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.