🇺🇸 United States ZIP Code

STANDARD

01604

Worcester

ZIP Code 01604 is a standard zip code serving Worcester, Worcester, Massachusetts (MA), in Worcester County, United States. It has an estimated population of 34,677 with a median household income of $49,797. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Massachusetts (MA)
County: Worcester
City: Worcester
Timezone: America/New_York

Coordinates

Latitude: 42.254100
Longitude: -71.774600

Geographic Details

Land Area: 6.44 mi²
Water Area: 0.18 mi²
Population Density: 5385.0 people per mi² (95th percentile)
Bounding Box: 42.277205°N, 42.219287°S, -71.731180°E, -71.799656°W

With 34,677 residents spread across 6.44 square miles, this area has a population density of 5385.0 people per square mile.

Demographics

34,677

Population

90th percentile

$49,797

Median Income

50th percentile

$219,100

Median Home Value

75th percentile

6.44 mi²

Land Area

The median household income in 01604 is $49,797, and the median home value is $219,100.

Housing

15,570

Total Units

14,293

Occupied Units

91.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Worcester, MA.

01601

Worcester

01602

Worcester

01603

Worcester

01605

Worcester

01606

Worcester

01607

Worcester

01608

Worcester

01609

Worcester

01610

Worcester

01613

Worcester

Similar ZIP Codes in Massachusetts

ZIP codes with similar median household income in Massachusetts.

01031

Gilbertville

$42,404

02671

West Harwich

$45,769

02639

Dennis Port

$46,510

02568

Vineyard Haven

$48,935

01850

Lowell

$51,538

02652

North Truro

$52,639

01970

Salem

$55,698

02538

East Wareham

$48,402

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.