Zip Code 08550
Princeton, New Jersey — Mercer County
📍 ZIP code 08550 is in Princeton, Mercer County, New Jersey.
ZIP code 08550 is located in Princeton, Mercer County, New Jersey. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 20,876. The area code for ZIP code 08550 is 609.
Quick Answer
Zip code 08550 is in Princeton, New Jersey (Mercer County). It has a population of 20,876, median household income of $206,658, and median home value of $758,900.
Population
20,876
Income
$206,658
Home Value
$758,900
Climate
87°F / 21°F
About Zip Code 08550
Zip code 08550 is located in Princeton, New Jersey, within Mercer County. Home to approximately 20,876 residents, this area sits at an elevation of 103 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 609.
The median household income is $206,658 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $758,900, and the cost of living index is 250 (150% above the national average of 100).
Summers average a high of 87°F while winters drop to 21°F. The area receives about 47 in of rain and 24 in of snow annually. The zip code covers 18.6 square miles of land area and 0.6 square miles of water.
Key Statistics
20,876
$206,658
$758,900
Eastern (EST/EDT)
609
103 ft
18.6 sq mi
45.1
7,839
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Compare With Nearby Zip Codes
| Metric | 08550 | 08561 | 08536 | 08520 | 08690 | 08619 |
|---|---|---|---|---|---|---|
| City | Princeton, NJ | Windsor, NJ | Plainsboro, NJ | Hightstown, NJ | Trenton, NJ | Trenton, NJ |
| Population | 20,876 | 381 | 20,558 | 29,321 | 18,996 | 23,512 |
| Median Income | $206,658 | $54,318 | $128,426 | $116,282 | $122,665 | $104,922 |
| Home Value | $758,900 | $479,500 | $655,100 | $361,800 | $362,700 | $320,800 |
| Cost of Living | 250 | 121 | 194 | 135 | 133 | 116 |
| Median Age | 45.1 | 64.1 | 36.7 | 40.7 | 48.1 | 41 |
Cost of Living
100 = National Average. Princeton's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.7x
Demographics
Zip code 08550 has a population of 20,876 people with a median age of 45.1. There are 7,839 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Princeton (08550) population trend from 2010 to 2024
↑ 924.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
21°F
47 in
24 in
Princeton experiences warm summers with average highs around 87°F. Winters are cool with lows averaging 21°F. The area receives about 24 in of snow per year.
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Housing & Economy
Median Home Value
$758,900
Median Household Income
$206,658
With 7,839 housing units across 18.6 square miles, 08550 has a housing density of 421 units per square mile. The home price-to-income ratio is 3.7x.
Location & Geography
Latitude
40.2802°
Longitude
-74.6146°
Land Area
18.6 sq mi
Water Area
0.6 sq mi
Nearby Zip Codes
Zip codes closest to 08550 (Princeton, NJ) with distances:
Related Cities in New Jersey
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 08550's $206,658. A way to compare Princeton to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 08550 (Princeton, NJ). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Princeton, New Jersey?
Princeton, New Jersey uses zip code 08550.
What county is zip code 08550 in?
Zip code 08550 is located in Mercer County, New Jersey.
What is the population of zip code 08550?
The population of zip code 08550 is 20,876 with a median age of 45.1.
Is 08550 in Princeton, New Jersey?
Yes, zip code 08550 is in Princeton, Mercer County, New Jersey. The area code is 609.
Frequently Asked Questions
What city is zip code 08550 in?
Zip code 08550 is in Princeton, New Jersey. It is part of Mercer County and uses the Eastern (EST/EDT) timezone.
What is zip code 08550?
Zip code 08550 is a U.S. postal code in Princeton, New Jersey (Mercer County). It has a population of 20,876 and covers 18.6 square miles.
What is the population of zip code 08550?
The population of zip code 08550 (Princeton, NJ) is 20,876 with a median age of 45.1. There are approximately 7,839 housing units in this area.
What is the median income in zip code 08550?
The median household income in zip code 08550 (Princeton, NJ) is $206,658 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 08550?
The median home value in zip code 08550 (Princeton, NJ) is $758,900. The cost of living index is 250 compared to the national average of 100.
What county is zip code 08550 in?
Zip code 08550 is located in Mercer County, New Jersey. The primary city is Princeton.
What is the area code for zip code 08550?
Zip code 08550 in Princeton, NJ uses area code 609. It is located in the Eastern (EST/EDT) timezone.
Is zip code 08550 a good place to live?
Zip code 08550 (Princeton, NJ) has a cost of living index of 250 (100 = national average), a median household income of $206,658, and median home values of $758,900. The median age is 45.1. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 08550?
The cost of living index for zip code 08550 (Princeton, NJ) is 250, where 100 represents the national average. This area is above the national average. Median home value: $758,900.
What schools serve zip code 08550?
Zip code 08550 in Princeton, New Jersey is served by the local school district of Mercer County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.