Princeton Junction, NJ · standard
ZIP Code 08550
Mercer County, New Jersey - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 19,445
- 404/sq mi High-density area
- $224,213
- Median income Above-median income area
- $807,200
- Median home value Above-median home value
- 85.5%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Princeton Junction pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.
- Top 1%
- household income, US ZIPs
- Top 4%
- home value, US ZIPs
- 404
- people per sq mi
- 76%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 08550 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 08550 (Princeton Junction, NJ) rose +6.2% from 2023 to 2024. The all-transactions index moved from 243.8 in 2023 to 259.0 in 2024 (2000 = 100).
ZIP code 08550 is a mid-sized community (a standard USPS delivery area) in Princeton Junction, Mercer County, New Jersey, home to 19,445 residents across 48.1 square miles, a density of 404 people per square mile, in the New York time zone.
ZIP 08550 skews affluent, with a median household income of $224,213 (84% above the average New Jersey ZIP), while per-capita income is $100,495. Both reported hardship measures are comparatively low in absolute terms: poverty is 2.5% and unemployment is 2.7%. Housing is both higher-cost and owner-heavy: median home value is $807,200 (56% above the average New Jersey ZIP), while 76.1% of occupied homes are owner-occupied and median rent is $2,584.
This is a highly-educated ZIP: 85.5% of adults hold a bachelor's degree or higher, the median age is 45.4, and the average commute is 43 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Mercer County, so 08550 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 08550
Top 5 sectors by establishment count in Princeton Junction, NJ
Which industries have the most business establishments in ZIP 08550.
- Professional, scientific, and technical services
Professional, scientific, and technical services
159 establishments
- Health care and social assistance 59
Health care and social assistance
59 establishments
- Accommodation and food services 36
Accommodation and food services
36 establishments
- Other services (except public administration) 36
Other services (except public administration)
36 establishments
- Educational services 25
Educational services
25 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 08550, Princeton Junction, 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
19,445
Population
48.1
Area (sq mi)
404
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 08550?
45.4
Median Age
50.7%
Male
49.3%
Female
47.7%
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?
$224,213
Median Household Income
+84% vs state ZIP avg
$100,495
Per Capita Income
2.5%
Poverty Rate
2.7%
Unemployment Rate
43.1 min
Mean Commute Time
How ZIP 08550 ranks among New Jersey ZIPs
Princeton Junction, 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)
$224,213 Top 5% higher than 95% 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
7,941housing units
7,941
Total Housing Units
7,817
Occupied Units
124
Vacant Units
2.69
Avg Household Size
Occupancy Type
$807,200
Median Home Value
+56% vs state ZIP avg
$2,584
Median Rent
1987
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+6.2%
YoY Change (2024)
259
HPI Index (2000 = 100)
+159%
Total Change Since 2000
Home values in ZIP 08550 have increased 6.2% over the past year (2024). Since 2000, this ZIP has seen +159% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +2.0% | 171 |
| 2021 | +6.0% | 181 |
| 2022 | +15.3% | 209 |
| 2023 | +16.7% | 244 |
| 2024 | +6.2% | 259 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 448 business establishments in ZIP 08550, employing approximately 4,146 people with a combined annual payroll of $223,048,000.
448
Businesses
4,146
Employees
$223.0M
Annual Payroll
15
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 159 | 35.5% |
| Health care and social assistance | 59 | 13.2% |
| Accommodation and food services | 36 | 8.0% |
| Other services (except public administration) | 36 | 8.0% |
| Educational services | 25 | 5.6% |
| Retail trade | 20 | 4.5% |
| Finance and insurance | 18 | 4.0% |
| Administrative and support and waste management and remediation services | 16 | 3.6% |
| Construction | 15 | 3.4% |
| Arts, entertainment, and recreation | 14 | 3.1% |
| Wholesale trade | 13 | 2.9% |
| Real estate and rental and leasing | 13 | 2.9% |
| Manufacturing | 8 | 1.8% |
| Transportation and warehousing | 7 | 1.6% |
| Information | 6 | 1.3% |
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 08550 vs 08561 →
ZIP 08550 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
- 08648
Lawrence Township (08648)
32,263 residents
- 08520
Hightstown (08520)
27,869 residents
- 08619
Trenton (08619)
22,723 residents
- 08536
Plainsboro (08536)
20,073 residents
- 08550
Princeton Junction (08550)
19,445 residents
- 08690 18,567
Trenton (08690)
18,567 residents
- 08691 15,104
Trenton (08691)
15,104 residents
- 08542 5,189
Princeton (08542)
5,189 residents
What this shows Among its immediate neighbors, ZIP 08550 ranks #6 by population - useful context the national average alone can't give.
ZIP 08550 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 08550
Princeton Junction (08550)
$224,213 median income
- 08540
Princeton (08540)
$176,983 median income
- 08536
Plainsboro (08536)
$137,607 median income
- 08691
Trenton (08691)
$132,520 median income
- 08690
Trenton (08690)
$127,339 median income
- 08648
Lawrence Township (08648)
$125,514 median income
- 08520
Hightstown (08520)
$118,010 median income
- 08619
Trenton (08619)
$105,946 median income
- 08542
Princeton (08542)
$105,524 median income
What this shows By household income, ZIP 08550 ranks the highest of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 08561 | Windsor, NJ | 226 | 2.9 mi |
| 08536 | Plainsboro, NJ | 20,073 | 4.1 mi |
| 08691 | Trenton, NJ | 15,104 | 5.1 mi |
| 08690 | Trenton, NJ | 18,567 | 4.5 mi |
| 08528 | Kingston, NJ | 315 | 7.3 mi |
| 08648 | Lawrence Township, NJ | 32,263 | 5.5 mi |
| 08520 | Hightstown, NJ | 27,869 | 4.9 mi |
| 08542 | Princeton, NJ | 5,189 | 5.5 mi |
| 08619 | Trenton, NJ | 22,723 | 5.0 mi |
| 08540 | Princeton, NJ | 47,115 | 6.0 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 08550, both outside NJ so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (19,445 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Mercer County
Related Areas
Frequently Asked Questions
What county is ZIP code 08550 in?
ZIP code 08550 (Princeton Junction) is located in Mercer County, New Jersey. Mercer County contains multiple ZIP codes, see the full list at /counties/mercer-nj.
What is the population of ZIP code 08550?
ZIP code 08550 in Princeton Junction, NJ has a population of 19,445 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 08550?
The median household income in ZIP 08550 is $224,213, which is 194% above the national average of $76,288.
What is the average home value in ZIP 08550?
The median home value in ZIP 08550 is $807,200, which is 190% above the national average of $278,155.
What is the demographic makeup of ZIP 08550?
The largest racial group in ZIP 08550 is Asian at 55.0%. Hispanic or Latino residents make up 4.8% of the population.
How many businesses are in ZIP code 08550?
ZIP code 08550 has 448 business establishments employing approximately 4,146 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 08550?
The top industries by establishment count in ZIP 08550 are: Professional, scientific, and technical services (159), Health care and social assistance (59), Accommodation and food services (36). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 08550?
According to the FHFA House Price Index, home values in ZIP 08550 increased by 6.2% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 159%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 08550?
In ZIP code 08550, 90.9% of residents aged 25+ have a high school diploma or higher, and 85.5% 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 08550?
The mean commute time for workers in ZIP code 08550 is 43.1 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 08550?
In ZIP code 08550, approximately 76.1% of occupied housing units are owner-occupied and 23.9% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 08550?
The poverty rate in ZIP code 08550 is 2.5% 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 08550's numbers, next.
- See how ZIP 08550 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Princeton Junction, NJ ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.