Upper Stewartsville, New Jersey Demographics & Population 2026

A note before these figures: with a population of 128, Upper Stewartsville'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

Upper Stewartsville is a small community located in New Jersey, within Warren County. The total population is 128. It ranks as the 679th most populous out of 700 Census-designated places in New Jersey.

Age Demographics

The median age in Upper Stewartsville is 56.2 years. This is 40% higher than the state median of 40.1 years. Only 10.9% of residents are under 18, indicating fewer families with children.

Economy, Income & Housing

The median household income in Upper Stewartsville is $250,000+. This is 141% higher than the state median of $103,556. It is also 210% higher than the national median of $80,734. The ACS records no residents below the poverty line in Upper Stewartsville. 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 21.2%. This is 236% higher than the state rate of 6.3%. The median home value is $405,600. Housing costs are 11% lower than the state median of $454,400. With a home-value-to-income ratio of just 1.6x, Upper Stewartsville 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

Every resident counted in Upper Stewartsville was recorded as White (non-Hispanic). A figure of exactly 100.0% reflects a survey sample too small to capture the community's full composition rather than a precise measurement.

Education

83.2% of residents aged 25 and older hold a bachelor's degree or higher. This places Upper Stewartsville in the top 10% of all cities in the state for educational attainment. This is 91% higher 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 83.2%. Notably, 49.5% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for Upper Stewartsville, 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.