Residential delivery area · New Jersey
ZIP Code 08553: Rocky Hill, NJ
ZIP code 08553 is in Rocky Hill, New Jersey, entirely in Somerset County (Census 2020 ZIP-county file). About 820 people live there (Census Bureau, ACS 2020-2024). Median household income is $148,056 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2023
- ZBP2023
- IRS2022
- Town
- Rocky Hill · its only residential ZIP
- County
- Somerset County
- Census places
- Rocky Hill
- Metro area
- New York-Newark-Jersey City, NY-NJ
- House district
- NJ-12 119th Congress
- State
- New Jersey
- Time zone
- Eastern
- Land area
- 0.6 sq mi · 1,343 people per sq mi
Where is ZIP code 08553?
08553 centers on 40.400°, -74.639° and covers 0.6 square miles of land plus 0.0 of water. It borders 3 ZIP codes: 08528, 08540, 08558.
The map draws ZIP code areas only. For the streets inside 08553, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 08553 compare with the rest of Somerset County?
| Measure | 08553 | In Somerset County | In NJ |
|---|---|---|---|
| People (ACS 2020-2024) | 819 | 27th of 32 | 540th of 598 |
| Median household income | $148k | not ranked | not ranked |
| Median home value | $597k | not ranked | not ranked |
08553's income and home value are not ranked: it has fewer than 1,000 residents (819). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 81% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 08553?
The 2020 Census counted 743 people in 08553; the ACS, which samples households over 2020-2024, estimates 819. Between the 2010 and 2020 censuses its population grew 8.9% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 819±152 (90% margin)
- 2020 Census count
- 743+8.9% since 2010 (682)
- Households
- 318
- Median age
- 44.5
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 08553?
Of the 819 people the ACS estimates in 08553, 21.0% are under 18 and 16.2% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (79.9%).
- Under 1821.0%
- 18 to 6462.8%
- 65 and older16.2%
- White, not Hispanic79.9%
- Hispanic or Latino7.7%
- Asian, not Hispanic6.2%
- Other or two or more6.1%
- Black, not Hispanic0.1%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 08553 earn?
Median household income is $148,056 (ACS 2020-2024). It is not measurably different from 2015-2019 ($137,040 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $148,056±$46,157
- Income per person
- $80,279
- Below the poverty line
- 3.9%
- Unemployed (of the labor force)
- 5.3%
- Adults 25+ with a bachelor's degree
- 71.1%
- Adjusted gross income per tax return, 2022
- $153,359390 returns; wages 63% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 08553?
- Median home value (owners' estimate)
- $597,200
- Median gross rent
- $1,799
- Homes owned by their occupants
- 76.4%
- Housing units
- 320
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 08553?
28 business establishments had a location in this ZIP code in 2023, 11 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services6
- Construction3
- Health care and social assistance3
- Accommodation and food services3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 08553?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 08528 | Kingston | 321 | – | 1.4 mi |
| 08540 | Princeton | 50,388 | $177k | 2.6 mi |
| 08558 | Skillman | 7,648 | $236k | 3.5 mi |
| 08542 | Princeton | 2,533 | $106k | 3.4 mi (near) |
| 08502 | Belle Mead | 11,849 | $227k | 3.4 mi (near) |
| 08544 | Princeton | 4,392 | – | 3.9 mi (near) |
| 08823 | Franklin Park | 8,884 | $116k | 4.7 mi (near) |
| 08824 | Kendall Park | 13,366 | $175k | 4.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.