🇺🇸 United States ZIP Code

STANDARD

02171

Quincy

ZIP Code 02171 is a standard zip code serving Quincy, Quincy, Massachusetts (MA), in Norfolk County, United States. It has an estimated population of 17,711 with a median household income of $64,812. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 42.282500
Longitude: -71.024100

Geographic Details

Land Area: 2.45 mi²
Water Area: 1.91 mi²
Population Density: 7215.0 people per mi² (95th percentile)
Bounding Box: 42.313598°N, 42.263480°S, -70.981944°E, -71.042794°W

With 17,711 residents spread across 2.45 square miles, this area has a population density of 7215.0 people per square mile.

Demographics

17,711

Population

75th percentile

$64,812

Median Income

80th percentile

$349,600

Median Home Value

90th percentile

2.45 mi²

Land Area

The median household income in 02171 is $64,812, and the median home value is $349,600. This places the area in the top 25% nationally for household income.

Housing

8,316

Total Units

7,880

Occupied Units

94.8%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Quincy, MA.

02169

Quincy

02170

Quincy

02269

Quincy

Similar ZIP Codes in Massachusetts

ZIP codes with similar median household income in Massachusetts.

02632

Centerville

$67,422

01351

Montague

$70,799

02127

Boston

$68,724

02368

Randolph

$62,152

01475

Winchendon

$58,288

01096

Williamsburg

$65,365

02189

East Weymouth

$60,059

02152

Winthrop

$64,548

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.