Rocky Hill Flag

Rocky Hill

County:
Somerset County
County Seat:
No
Area (mi²):
0.61
State:
New Jersey

Rocky Hill is a borough located in Somerset County, New Jersey. Rocky Hill has a 2026 population of 762. Rocky Hill is currently growing at a rate of 0.53% annually and its population has increased by 2.97% since the most recent census, which recorded a population of 740 in 2020.

The median household income in Rocky Hill is $148,056 with a poverty rate of 3.91%. The median age in Rocky Hill is 44.5 years: 40.5 years for males, and 49.2 years for females. For every 100 females there are 112.2 males.

762
Total Population
1,250
Density (mi²)
4 0.53%
Growth

Rocky Hill Population

Rocky Hill Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202676240.53%
202575830.4%
202475591.21%
202374620.27%
202274420.27%
202174220.27%
2020740-2-0.27%
2019671-5-0.74%
2018676-1-0.15%
2017677-2-0.29%
2016679-2-0.29%
2015681-3-0.44%
2014684-2-0.29%
201368620.29%
2012684-2-0.29%
201168640.59%
201068310.15%

Median Age

Overall: 44.5 years
Female: 49.2 years
Male: 40.5 years

Rocky Hill Adults

There are 647 adults, (133 of whom are seniors) in Rocky Hill.

Sex Ratio

Female: 386 (47.1%)
Male: 433 (52.9%)

Demographics

The racial composition of Rocky Hill includes 82.91% White, 6.23% Asian, 3.91% other race, and smaller percentages for Black or African American and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White67982.91%
Two or more races566.84%
Asian516.23%
Other race323.91%
Black or African American10.12%
Race
Population ↓
Percentage (of total)
White253.05%
Other race232.81%
Two or more races151.83%
Race
Population ↓
Percentage (of total)
White65479.85%
Asian516.23%
Two or more races415.01%
Other race91.1%
Black or African American10.12%

Rocky Hill Marital Status

Economics and Income Statistics

Rocky Hill 's average per capita income is $88,125. Household income levels show a median of $148,056. The poverty rate stands at 3.91%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$237,679-
Families$195,625$242,997
Households$148,056$201,096
Non Families$84,861$120,423

$88,125

Average Income

$148,056

Median Household Income

3.91%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)