Harmony, New Jersey Demographics & Population 2026

A note before these figures: with a population of 263, Harmony'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

Harmony is a small community located in New Jersey, within Warren County. The total population is 263. It ranks as the 651st most populous out of 700 Census-designated places in New Jersey.

Age Demographics

The median age in Harmony is 49.5 years. This is 23% higher than the state median of 40.1 years. Only 13.7% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Harmony is $59,375. This is 43% lower than the state median of $103,556. It is also 26% lower than the national median of $80,734. The ACS records no residents below the poverty line in Harmony. 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 survey records no unemployed residents in Harmony, which reflects the size of the sample rather than a labor market without joblessness. The median home value is $326,800. Housing costs are 28% lower than the state median of $454,400. The home-value-to-income ratio is 5.5x. 88.7% of occupied housing units are owner-occupied. This homeownership rate is 39% higher than the state average of 63.8%.

Race & Ethnicity

Harmony has a predominantly White (non-Hispanic) population, comprising 95.4% of all residents. The White (non-Hispanic) population is significantly higher than the state average (95.4% vs 50.9%).

Education

17.2% 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 61% 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 96.0%.

Data Sources & Methodology

All demographic data for Harmony, 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.