🇺🇸 United States ZIP Code

STANDARD

08638

Trenton

ZIP Code 08638 is a standard zip code serving Trenton, Trenton, New Jersey (NJ), in Mercer County, United States. It has an estimated population of 22,832 with a median household income of $58,371. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: New Jersey (NJ)
County: Mercer
City: Trenton
Timezone: America/New_York

Coordinates

Latitude: 40.251000
Longitude: -74.762700

Geographic Details

Land Area: 5.73 mi²
Water Area: 0.03 mi²
Population Density: 3986.0 people per mi² (90th percentile)
Bounding Box: 40.292208°N, 40.225511°S, -74.728752°E, -74.798285°W

With 22,832 residents spread across 5.73 square miles, this area has a population density of 3986.0 people per square mile.

Demographics

22,832

Population

80th percentile

$58,371

Median Income

70th percentile

$207,000

Median Home Value

75th percentile

5.73 mi²

Land Area

The median household income in 08638 is $58,371, and the median home value is $207,000.

Housing

9,170

Total Units

8,427

Occupied Units

91.9%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Trenton, NJ.

08601

Trenton

08602

Trenton

08603

Trenton

08604

Trenton

08605

Trenton

08606

Trenton

08607

Trenton

08608

Trenton

08609

Trenton

08610

Trenton

Similar ZIP Codes in New Jersey

ZIP codes with similar median household income in New Jersey.

07734

Keansburg

$50,113

08723

Brick

$66,233

08326

Landisville

$59,397

08092

West Creek

$65,469

07065

Rahway

$58,101

08030

Gloucester City

$50,486

08078

Runnemede

$56,036

08302

Bridgeton

$49,654

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.