ZIP Code 08550
standardSource:
Princeton Junction · Mercer County · New Jersey
- Population
- 19,445
- Median income
- $224,213
- Median home value
- $807,200
- Bachelor's or higher
- 85.5%
- Land area
- 48.1 sq mi
404/sq mi
▲ 194% vs US
higher than 99% of US ZIPs
▲ 190% vs US
higher than 96% of US ZIPs
Median age 45.4
New York
ZIP code 08550 in Princeton Junction, New Jersey has a population of 19,445. The median household income is $224,213, which is 194% above the national average. Median home value is $807,200, 190% above the US average. 85.5% of residents hold a bachelor's degree or higher.
ZIP code 08550 is classified by USPS as a standard delivery area and covers roughly 48.1 square miles in Princeton Junction, Mercer County, New Jersey. The area is home to 19,445 residents, producing a population density of 404 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 08550 against New Jersey and the nation.
On the economic side, the median household income for ZIP 08550 sits at $224,213 (84% above the New Jersey average), while per-capita income is $100,495. The poverty rate stands at 2.5% and the unemployment rate at 2.7%. On housing, the median home value is $807,200 (56% above the state average) with median rent at $2,584 per month, and 76.1% of occupied units are owner-occupied, a direct signal of whether 08550 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 85.5% of adults hold a bachelor's degree or higher, the median age is 45.4, and the average commute is 43 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Mercer County, so you can benchmark 08550 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 08550
Top 5 sectors by establishment count
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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + 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
$100,495
Per Capita Income
2.5%
Poverty Rate
2.7%
Unemployment Rate
43.1 min
Mean Commute Time
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?
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
$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 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 |
More ZIP Codes in Mercer County
Related Areas
Frequently Asked Questions
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What is the median household income in ZIP 08550? ▼
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What is the demographic makeup of ZIP 08550? ▼
How many businesses are in ZIP code 08550? ▼
What are the main industries in ZIP code 08550? ▼
How have home values changed in ZIP code 08550? ▼
What is the education level in ZIP code 08550? ▼
What is the average commute time in ZIP 08550? ▼
What percentage of residents own vs. rent in ZIP 08550? ▼
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ZIP Code Research Guides
Official Data Resources for Princeton Junction, NJ
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.