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 High-density area
- $148,056
- Median income Above-median income area
- $597,200
- Median home value Above-median home value
- 71.1%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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 average New Jersey ZIP), while per-capita income is $80,279. The poverty rate is 3.9%, with unemployment at 5.3%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $597,200 (16% above the average New Jersey ZIP), while 76.4% of occupied homes are owner-occupied and median rent is $1,799.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Somerset County, so 08553 can be compared with both its immediate and county-level context.
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.
- Professional, scientific, and technical services
Professional, scientific, and technical services
6 establishments
- Construction
Construction
3 establishments
- Health care and social assistance
Health care and social assistance
3 establishments
- Accommodation and food services
Accommodation and food services
3 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, 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
Who lives in ZIP 08553?
44.5
Median Age
52.9%
Male
47.1%
Female
11.4%
Foreign-Born
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 ZIP avg
$80,279
Per Capita Income
3.9%
Poverty Rate
5.3%
Unemployment Rate
22.6 min
Mean Commute Time
How ZIP 08553 ranks among New Jersey ZIPs
Rocky Hill, NJ household income vs. every New Jersey ZIP code
Median household income among 565 reporting New Jersey ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$148,056 Top 25% higher than 75% of 565 New Jersey ZIPs
Each bar is a $20K-wide band; taller bars hold more New Jersey 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
320housing units
320
Total Housing Units
318
Occupied Units
2
Vacant Units
2.53
Avg Household Size
Occupancy Type
$597,200
Median Home Value
+16% vs state ZIP avg
$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.
- 08540
Princeton (08540)
47,115 residents
- 08844
Hillsborough (08844)
38,367 residents
- 08536
Plainsboro (08536)
20,073 residents
- 08852 17,220
Monmouth Junction (08852)
17,220 residents
- 08824 12,115
Kendall Park (08824)
12,115 residents
- 08502 11,317
Belle Mead (08502)
11,317 residents
- 08823 9,016
Franklin Park (08823)
9,016 residents
- 08558 6,629
Skillman (08558)
6,629 residents
- 08542 5,189
Princeton (08542)
5,189 residents
What this shows Among its immediate neighbors, ZIP 08553 ranks #0 by population - useful context the national average alone can't give.
ZIP 08553 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 08558
Skillman (08558)
$236,016 median income
- 08502
Belle Mead (08502)
$227,242 median income
- 08540
Princeton (08540)
$176,983 median income
- 08824
Kendall Park (08824)
$174,776 median income
- 08844
Hillsborough (08844)
$153,556 median income
- 08553
Rocky Hill (08553)
$148,056 median income
- 08536
Plainsboro (08536)
$137,607 median income
- 08852
Monmouth Junction (08852)
$133,209 median income
- 08823
Franklin Park (08823)
$115,597 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 08553, both outside NJ so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Somerset County
Related Areas
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.
Related
Take this with you
What to do with ZIP 08553's numbers, next.
- See how ZIP 08553 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Rocky Hill, NJ ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.