Cedar Knolls, NJ Demographics

Population 4,952 · Census ACS 2020–24

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Cedar Knolls, NJ map of median age by neighborhood
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Population and households in Cedar Knolls

Household size in Cedar Knolls

Household size, people per household
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–102.762.792.772.68
2010–142.602.852.822.73
2015–192.502.822.782.71
2020–242.602.792.762.65
Change−0.16−0.00−0.01−0.03
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Households in Cedar Knolls average 2.60 people, about the same as the country as a whole (2.65). The typical household here is smaller than in the New York area as a whole, where it has 2.79 people. Household size has dropped from 2.76 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.

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 Cedar Knolls

Median age, years
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–1041.438.039.137.7
2010–1444.038.740.038.6
2015–1941.939.841.039.6
2020–2445.240.440.940.1
Change+3.8+2.4+1.8+2.3
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Cedar Knolls skews older: half of its residents are older than 45.2, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.

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 Cedar Knolls

Single-parent households, % of households
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–102.3%13.1%11.6%12.3%
2010–142.1%12.8%11.8%12.3%
2015–197.4%11.4%10.8%11.6%
2020–243.6%11.6%11.3%11.6%
Change+1.2 pts−1.5 pts−0.4 pts−0.6 pts
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Single-parent households are relatively rare in Cedar Knolls: 3.6% of households, against 11.6% nationally.

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 Cedar Knolls

Renters in Cedar Knolls

Renters, % of occupied homes
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–1030.4%47.1%33.1%33.3%
2010–1423.6%48.7%35.0%35.6%
2015–1929.2%48.8%36.1%36.0%
2020–2438.5%48.6%36.2%34.8%
Change+8.1 pts+1.5 pts+3.1 pts+1.5 pts
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Nearly four in ten households in Cedar Knolls rent their homes (38.5%), a bit above the national share of 34.8%. Even so, renters make up a smaller share here than in the New York area as a whole (48.6%). Among homeowners, 28.8% have no mortgage at all, well below the national share of 39.8%.

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 Cedar Knolls

Vacant homes, % of all homes
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–109.0%9.1%9.1%11.4%
2010–142.7%9.0%9.3%11.4%
2015–1911.6%9.1%9.3%11.1%
2020–243.0%7.9%6.6%9.6%
Change−6.1 pts−1.2 pts−2.5 pts−1.8 pts
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Only 3.0% of homes in Cedar Knolls are vacant, far below the national rate of 9.6%, which usually means strong demand for housing.

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 Cedar Knolls

Age of homes, median year built
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–101978195719651974
2010–141976195819661975
2015–191979195919671977
2020–241979196219691980
Change+1+5+5+6
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Homes in Cedar Knolls are about the same age as the nation's housing: the median home was built in 1979, versus 1980 nationally. Homes here are newer than in the New York area overall, where the median home dates to 1962.

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 Cedar Knolls

Rent, per month
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–10$1,585$1,268$1,246$965
2010–14$2,001$1,377$1,324$1,040
2015–19$2,677$1,645$1,522$1,213
2020–24$2,783$2,060$1,896$1,571
Change+$1,199+$792+$651+$606
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A typical rental in Cedar Knolls costs $2,783 a month with utilities, well above the national median of $1,571. Rent takes 28.0% of the typical renter's income, just 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 Cedar Knolls

Bachelor's degrees in Cedar Knolls

Bachelor's degrees, % of adults 25+
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–1051.4%35.0%34.7%28.4%
2010–1451.0%36.7%36.4%29.6%
2015–1965.1%39.9%39.6%32.1%
2020–2453.5%43.6%43.4%35.6%
Change+2.1 pts+8.6 pts+8.6 pts+7.2 pts
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Cedar Knolls is highly educated: more than half of adults 25 and older (53.5%) hold at least a bachelor's degree, far above the national share of 35.6%.

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 Cedar Knolls

High school graduates, % of adults 25+
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–1094.2%83.7%87.0%84.9%
2010–1494.2%84.6%88.1%86.1%
2015–1994.0%86.2%89.5%87.7%
2020–2491.4%86.9%90.2%89.3%
Change−2.8 pts+3.3 pts+3.2 pts+4.3 pts
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High school completion in Cedar Knolls is a bit above the national rate: 91.4% of adults have a diploma or equivalent, against 89.3%.

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 Cedar Knolls

Unemployment, % of the labor force
PeriodCedar KnollsNew York areaNew JerseyU.S.
2006–104.1%7.9%7.9%8.1%
2010–147.6%9.5%9.8%9.4%
2015–195.6%5.7%5.6%5.6%
2020–241.9%6.9%6.4%5.4%
Change−2.2 pts−0.9 pts−1.5 pts−2.7 pts
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Unemployment in Cedar Knolls has been low: just 1.9% of the labor force was out of work and looking, well below the national rate of 5.4%. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.

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).

Cedar Knolls compared with nearby cities

CityHousehold sizeMedian ageSingle parentsRentersVacant homesMedian year builtMedian rentBachelor's degreeHigh school diplomaUnemployment
Cedar Knolls2.6045.23.6%38.5%3.0%1979$2,78353.5%91.4%1.9%
Whippany2.5450.15.0%12.9%1.4%1974$2,65657.6%97.3%3.3%
Morris Plains2.5744.23.5%26.1%3.7%1969$2,50967.0%96.1%5.5%
Morristown2.5341.19.2%37.2%4.1%1972$2,54465.3%93.7%4.5%
Parsippany2.5544.63.6%47.7%3.5%1971$1,93661.0%92.1%5.4%
Mount Tabor2.5151.63.4%6.1%1.7%1955$2,07153.4%98.1%1.7%
Florham Park2.6339.93.6%29.4%8.9%1986$2,72370.0%98.9%5.2%
Madison2.7038.85.4%36.3%3.7%1964$2,38774.5%97.2%5.9%
East Hanover2.8845.62.4%9.7%2.8%1974$2,69559.3%96.4%4.2%
Denville2.7443.25.1%13.8%7.4%1967$1,94760.4%97.2%5.1%
Mountain Lakes3.2342.84.6%5.5%5.4%1948$3,39783.8%99.1%2.6%

All figures 2020–24.

Cities with similar populations: Sunman, IN · Sunderland, MD · Tiffin, IA · Surf City, NC · Surgoinsville, TN · Tontitown, AR · Thornton, PA · Vienna, IN · Osage, IA · Cresco, IA

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 Cedar Knolls. 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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