PlainZIP

Rocky Hill, NJ · standard

ZIP Code 08553

Somerset County, New Jersey - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

682
431/sq mi
$148,056
Median income
$597,200
Median home value
71.1%
Bachelor's or higher

The verdict

Rocky Hill pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.

Top 4%
household income, US ZIPs
Top 9%
home value, US ZIPs
431
people per sq mi
76%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 08553 against every reporting US ZIP.

ZIP code 08553 is a sparsely populated ZIP (a standard USPS delivery area) in Rocky Hill, Somerset County, New Jersey, home to just 682 residents across 1.6 square miles, a density of 431 people per square mile, in the New York time zone.

ZIP 08553 skews affluent, with a median household income of $148,056 (21% above the New Jersey average), while per-capita income is $80,279. 3.9% of residents live below the poverty line, and the unemployment rate reads 5.3%. The typical home here is valued at $597,200 (16% above the state average); renters pay a median of $1,799 monthly, and 76.4% of units are owner-occupied.

This is a highly-educated ZIP: 71.1% of adults hold a bachelor's degree or higher, the median age is 44.5, and the average commute is 23 minutes. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Somerset County, letting you compare 08553 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 08553

Top 5 sectors by establishment count in Rocky Hill, NJ

Which industries have the most business establishments in ZIP 08553.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 08553, Rocky Hill, NJ · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

682

Population

1.6

Area (sq mi)

431

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 08553?

44.5

Median Age

52.9%

Male

47.1%

Female

11.4%

Foreign-Born

White 82.9%
African American 0.1%
Asian 6.2%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 6.8%
Hispanic or Latino 7.7%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$148,056

Median Household Income

+21% vs state

$80,279

Per Capita Income

3.9%

Poverty Rate

5.3%

Unemployment Rate

22.6 min

Mean Commute Time

How ZIP 08553 ranks nationally

Rocky Hill, NJ household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$148,056 Top 4% higher than 96% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 81.6%
Bachelor's Degree or Higher 71.1%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

320

Total Housing Units

318

Occupied Units

2

Vacant Units

2.53

Avg Household Size

Occupancy Type

Owner 76.4%
Renter 23.6%

$597,200

Median Home Value

+16% vs state

$1,799

Median Rent

1960

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 28 business establishments in ZIP 08553, employing approximately 233 people with a combined annual payroll of $8,745,000.

28

Businesses

233

Employees

$8.7M

Annual Payroll

4

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 6 21.4%
Construction 3 10.7%
Health care and social assistance 3 10.7%
Accommodation and food services 3 10.7%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 08553 vs 08528 →

ZIP 08553 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 08553 ranks #0 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 08553 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 08553 ranks #6 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
08528 Kingston, NJ 315 1.5 mi
08540 Princeton, NJ 47,115 2.7 mi
08502 Belle Mead, NJ 11,317 3.4 mi
08542 Princeton, NJ 5,189 3.4 mi
08558 Skillman, NJ 6,629 3.5 mi
08852 Monmouth Junction, NJ 17,220 4.9 mi
08824 Kendall Park, NJ 12,115 4.9 mi
08823 Franklin Park, NJ 9,016 4.9 mi
08536 Plainsboro, NJ 20,073 5.5 mi
08844 Hillsborough, NJ 38,367 7.0 mi

More ZIP Codes in Somerset County

08873 standard
Somerset, NJ
Pop: 49,921
08844 standard
Hillsborough, NJ
Pop: 38,367
08807 standard
Bridgewater, NJ
Pop: 37,972
07920 standard
Basking Ridge, NJ
Pop: 26,747
08876 standard
Somerville, NJ
Pop: 22,179
07059 standard
Warren, NJ
Pop: 15,311

Related Areas

Somerset County Rocky Hill, NJ New Jersey

Frequently Asked Questions

What county is ZIP code 08553 in? ▼
ZIP code 08553 (Rocky Hill) is located in Somerset County, New Jersey. Somerset County contains multiple ZIP codes, see the full list at /counties/somerset-nj.
What is the population of ZIP code 08553? ▼
ZIP code 08553 in Rocky Hill, NJ has a population of 682 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 08553? ▼
The median household income in ZIP 08553 is $148,056, which is 94% above the national average of $76,288.
What is the average home value in ZIP 08553? ▼
The median home value in ZIP 08553 is $597,200, which is 115% above the national average of $278,155.
What is the demographic makeup of ZIP 08553? ▼
The largest racial group in ZIP 08553 is White at 82.9%. Hispanic or Latino residents make up 7.7% of the population.
How many businesses are in ZIP code 08553? ▼
ZIP code 08553 has 28 business establishments employing approximately 233 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 08553? ▼
The top industries by establishment count in ZIP 08553 are: Professional, scientific, and technical services (6), Construction (3), Health care and social assistance (3). There are 4 industry sectors represented in total.
What is the education level in ZIP code 08553? ▼
In ZIP code 08553, 81.6% of residents aged 25+ have a high school diploma or higher, and 71.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 08553? ▼
The mean commute time for workers in ZIP code 08553 is 22.6 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 08553? ▼
In ZIP code 08553, approximately 76.4% of occupied housing units are owner-occupied and 23.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 08553? ▼
The poverty rate in ZIP code 08553 is 3.9% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.