Denville, NJ Demographics

Population 16,668 · Census ACS 2020–24

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Median age by neighborhoodHistory and comparison ↓︎
Denville, NJ map of median age by neighborhood
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Population and households in Denville

Household size in Denville

Household size, people per household
PeriodDenvilleNew York areaNew JerseyU.S.
2006–102.622.792.772.68
2010–142.552.852.822.73
2015–192.642.822.782.71
2020–242.742.792.762.65
Change+0.12−0.00−0.01−0.03
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The typical household in Denville holds 2.74 people, slightly more than the U.S. average of 2.65. Since 2006–10, household size has climbed from 2.62, even as the national average fell. Households are largest in the west and smallest in the northeast.

Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).

Median age in Denville

Median age, years
PeriodDenvilleNew York areaNew JerseyU.S.
2006–1044.038.039.137.7
2010–1444.438.740.038.6
2015–1945.439.841.039.6
2020–2443.240.440.940.1
Change−0.8+2.4+1.8+2.3
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Denville skews older than the country: its median age is 43.2, against 40.1 nationally. The median age has edged down from 44.0 in 2006–10, even as the national median rose. Residents skew youngest in the south and oldest in the northeast.

Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).

Single-parent households in Denville

Single-parent households, % of households
PeriodDenvilleNew York areaNew JerseyU.S.
2006–104.3%13.1%11.6%12.3%
2010–147.9%12.8%11.8%12.3%
2015–194.7%11.4%10.8%11.6%
2020–245.1%11.6%11.3%11.6%
Change+0.8 pts−1.5 pts−0.4 pts−0.6 pts
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Single parents head only 5.1% of households in Denville, well below the national share of 11.6%. Since 2006–10, the single-parent share has edged up 0.8 points, even as the national share fell.

Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).

Housing in Denville

Renters in Denville

Renters, % of occupied homes
PeriodDenvilleNew York areaNew JerseyU.S.
2006–1015.5%47.1%33.1%33.3%
2010–1414.5%48.7%35.0%35.6%
2015–1917.2%48.8%36.1%36.0%
2020–2413.8%48.6%36.2%34.8%
Change−1.7 pts+1.5 pts+3.1 pts+1.5 pts
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Only 13.8% of households in Denville rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 34.4% have no mortgage at all, below the national share of 39.8%. Renting is most common in the northeast and least common in the west. The renter share is down 1.7 points from 2006–10, even as the national share rose.

Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).

Vacant homes in Denville

Vacant homes, % of all homes
PeriodDenvilleNew York areaNew JerseyU.S.
2006–108.8%9.1%9.1%11.4%
2010–146.7%9.0%9.3%11.4%
2015–197.5%9.1%9.3%11.1%
2020–247.4%7.9%6.6%9.6%
Change−1.4 pts−1.2 pts−2.5 pts−1.8 pts
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Fewer homes sit empty in Denville than nationally: 7.4%, against 9.6% for the U.S. That is in line with the rest of the New York area. Vacancy is down 1.4 points from 2006–10, in line with the national trend.

Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).

Age of homes in Denville

Age of homes, median year built
PeriodDenvilleNew York areaNew JerseyU.S.
2006–101967195719651974
2010–141966195819661975
2015–191966195919671977
2020–241967196219691980
Change−0+5+5+6
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The housing in Denville is old by national standards: the median home dates to 1967, against 1980 for the U.S., so buyers will find more older houses, some of them due for updates. Even so, homes here are newer than in the wider New York area, where the median home dates to 1962. Newer construction is concentrated in the southwest, while the center has the oldest housing.

Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).

Rent in Denville

Rent, per month
PeriodDenvilleNew York areaNew JerseyU.S.
2006–10$1,119$1,268$1,246$965
2010–14$1,730$1,377$1,324$1,040
2015–19$1,893$1,645$1,522$1,213
2020–24$1,947$2,060$1,896$1,571
Change+$827+$792+$651+$606
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A typical rental in Denville costs $1,947 a month with utilities, well above the national median of $1,571. Still, rents here are lower than in the New York area as a whole ($2,060). Rent has climbed $827 a month since 2006–10, up 74%, faster than rents rose nationally. Rent takes 24.1% of the typical renter's income, comfortably under the 30% mark often used to define affordable rent.

Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).

Education in Denville

Bachelor's degrees in Denville

Bachelor's degrees, % of adults 25+
PeriodDenvilleNew York areaNew JerseyU.S.
2006–1049.9%35.0%34.7%28.4%
2010–1449.3%36.7%36.4%29.6%
2015–1958.0%39.9%39.6%32.1%
2020–2460.4%43.6%43.4%35.6%
Change+10.5 pts+8.6 pts+8.6 pts+7.2 pts
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Denville is highly educated: about six in ten adults 25 and older (60.4%) hold at least a bachelor's degree, far above the national share of 35.6%. The share with a degree has risen 10.5 points since 2006–10, as it has nationally. College graduates are most concentrated in the north and least in the southeast.

Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

High school graduates in Denville

High school graduates, % of adults 25+
PeriodDenvilleNew York areaNew JerseyU.S.
2006–1094.6%83.7%87.0%84.9%
2010–1497.2%84.6%88.1%86.1%
2015–1995.8%86.2%89.5%87.7%
2020–2497.2%86.9%90.2%89.3%
Change+2.6 pts+3.3 pts+3.2 pts+4.3 pts
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Finishing high school is nearly universal in Denville: 97.2% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%. The share with a diploma is up 2.6 points from 2006–10, in line with the national trend. Denville has a higher share of high school graduates than the great majority of New Jersey cities.

High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).

Jobs in Denville

Unemployment, % of the labor force
PeriodDenvilleNew York areaNew JerseyU.S.
2006–107.7%7.9%7.9%8.1%
2010–147.6%9.5%9.8%9.4%
2015–194.3%5.7%5.6%5.6%
2020–245.1%6.9%6.4%5.4%
Change−2.7 pts−0.9 pts−1.5 pts−2.7 pts
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Unemployment in Denville is close to the national rate: 5.1% of the labor force, against 5.4%. The rate is lower than in the wider New York area (6.9%). Unemployment is down 2.7 points from 2006–10, mirroring the country.

Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).

Denville compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Denville2.7443.25.1%13.8%7.4%1967$1,94760.4%97.2%5.1%
Mount Tabor2.5151.63.4%6.1%1.7%1955$2,07153.4%98.1%1.7%
Rockaway2.8542.36.0%20.6%4.3%1968$1,93449.1%96.6%6.3%
Mountain Lakes3.2342.84.6%5.5%5.4%1948$3,39783.8%99.1%2.6%
Morris Plains2.5744.23.5%26.1%3.7%1969$2,50967.0%96.1%5.5%
Victory Gardens2.6042.016.7%66.6%6.1%1972$1,51815.1%74.5%6.7%
Dover2.8439.910.8%47.3%3.5%1957$1,85822.8%82.1%5.5%
Hibernia2.8432.412.0%4.9%19.1%1959$2,82040.3%99.0%6.6%
Boonton2.6242.64.2%26.9%6.8%1962$1,83757.8%96.5%6.4%
Parsippany2.5544.63.6%47.7%3.5%1971$1,93661.0%92.1%5.4%
Lake Telemark2.8133.611.2%5.2%18.4%1961$2,82041.4%99.1%6.4%

All figures 2020–24.

Cities with similar populations: Telford, PA · East Highland Park, VA · East Longmeadow, MA · Easthampton, MA · Eatonton, GA · Edgewater, NJ · El Dorado, KS · Upper Marlboro, MD · Uniontown, OH · Tuckerton, NJ

About these numbers

Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Denville. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.

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