East Rocky Hill, New Jersey

Country

Elevation

^[4]

289 ft (88 m)

East Rocky Hill, New Jersey
Census-designated place
East Rocky Hill Location in Somerset County Show map of Somerset County, New Jersey East Rocky Hill Location in New Jersey Show map of New Jersey East Rocky Hill Location in the United States Show map of the United States
Coordinates: 40°24′54″N 74°37′04″W / 40.415133°N 74.617903°W / 40.415133; -74.617903^[1]^[2]
Country	United States
State	New Jersey
County	Somerset
Township	Franklin
Area ^[3]
• Total	4.25 sq mi (11.01 km²)
• Land	4.17 sq mi (10.79 km²)
• Water	0.081 sq mi (0.21 km²) 2.05%
Elevation ^[4]	289 ft (88 m)
Population (2020)^[5]
• Total	468
• Density	112.3/sq mi (43.37/km²)
Time zone	UTC−05:00 (Eastern (EST))
• Summer (DST)	UTC−04:00 (Eastern (EDT))
Area codes	609 and 732/848
FIPS code	34-19490^[1]^[6]
GNIS feature ID	02583986^[1]

East Rocky Hill is an unincorporated community and census-designated place (CDP)^[7] located in Franklin Township, in Somerset County, in the U.S. state of New Jersey.^[8]^[9]^[10] As of the 2020 census, East Rocky Hill had a population of 468.^[11]

Demographics

Historical population
Census	Pop.	%±
2010	469	—
2020	468	−0.2%
Population sources: 2010^[12] 2020^[5]

East Rocky Hill first appeared as a census designated place in the 2010 U.S. census.^[13]

2020 census

**East Rocky Hill CDP, New Jersey – Racial and ethnic composition**
*Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race.*
Race / Ethnicity (NH = Non-Hispanic)	Pop 2010^[14]	Pop 2020^[15]	% 2010	% 2020
White alone (NH)	319	279	68.02%	59.62%
Black or African American alone (NH)	36	46	7.68%	9.83%
Native American or Alaska Native alone (NH)	0	0	0.00%	0.00%
Asian alone (NH)	33	37	7.04%	7.91%
Native Hawaiian or Pacific Islander alone (NH)	0	0	0.00%	0.00%
Other race alone (NH)	0	2	0.00%	0.43%
Mixed race or Multiracial (NH)	8	13	1.71%	2.78%
Hispanic or Latino (any race)	73	91	15.57%	19.44%
Total	469	468	100.00%	100.00%

2010 census

The 2010 United States census counted 469 people, 160 households, and 115 families in the CDP. The population density was 112.6 per square mile (43.5/km²). There were 172 housing units at an average density of 41.3 per square mile (15.9/km²). The racial makeup was 74.20% (348) White, 7.68% (36) Black or African American, 0.00% (0) Native American, 7.04% (33) Asian, 0.00% (0) Pacific Islander, 8.96% (42) from other races, and 2.13% (10) from two or more races. Hispanic or Latino of any race were 15.57% (73) of the population.^[12]

Of the 160 households, 30.0% had children under the age of 18; 64.4% were married couples living together; 4.4% had a female householder with no husband present and 28.1% were non-families. Of all households, 22.5% were made up of individuals and 8.8% had someone living alone who was 65 years of age or older. The average household size was 2.93 and the average family size was 3.39.^[12]

26.4% of the population were under the age of 18, 7.2% from 18 to 24, 22.2% from 25 to 44, 29.6% from 45 to 64, and 14.5% who were 65 years of age or older. The median age was 40.6 years. For every 100 females, the population had 110.3 males. For every 100 females ages 18 and older there were 100.6 males.^[12]

v t e Municipalities and communities of Somerset County, New Jersey, United States
County seat: Somerville
Boroughs	Bernardsville Bound Brook Far Hills Manville Millstone North Plainfield Peapack-Gladstone Raritan Rocky Hill Somerville South Bound Brook Watchung	Map of New Jersey highlighting Somerset County
Townships	Bedminster Bernards Branchburg Bridgewater Franklin Green Brook Hillsborough Montgomery Warren
CDPs	Basking Ridge Bedminster Belle Mead Blackwells Mills Blawenburg Bradley Gardens Bridgewater Center Clyde East Franklin East Millstone East Rocky Hill Finderne Flagtown Franklin Center Franklin Park Green Knoll Griggstown Harlingen Hillsborough Kingston Lamington Liberty Corner Lyons Martinsville Middlebush Neshanic Neshanic Station‡ Pleasant Plains Pluckemin Pottersville‡ Six Mile Run Skillman Somerset Ten Mile Run The Hills Voorhees Weston Zarephath
Other communities	Amwell Cloverhill Dutchtown Franklin Corners Free Acres Gladstone Little Rocky Hill Middlebrook North Branch Rockingham South Branch Stoutsburg Zion
Footnotes	‡This populated place also has portions in an adjacent county or counties
New Jersey portal United States portal

East Rocky Hill, New Jersey

Demographics

2020 census

2010 census

References

Related Articles