🇺🇸 United States ZIP Code

STANDARD

21742

Hagerstown

ZIP Code 21742 is a standard zip code serving Hagerstown, Hagerstown, Maryland (MD), in Washington County, United States. It has an estimated population of 31,444 with a median household income of $66,169. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Maryland (MD)
County: Washington
City: Hagerstown
Timezone: America/New_York

Coordinates

Latitude: 39.657300
Longitude: -77.692100

Geographic Details

Land Area: 50.46 mi²
Water Area: 0.03 mi²
Population Density: 623.0 people per mi² (70th percentile)
Bounding Box: 39.721253°N, 39.587303°S, -77.565643°E, -77.743050°W

With 31,444 residents spread across 50.46 square miles, this area has a population density of 623.0 people per square mile.

Demographics

31,444

Population

90th percentile

$66,169

Median Income

80th percentile

$229,200

Median Home Value

80th percentile

50.46 mi²

Land Area

The median household income in 21742 is $66,169, and the median home value is $229,200. This places the area in the top 25% nationally for household income.

Housing

13,555

Total Units

12,545

Occupied Units

92.5%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Hagerstown, MD.

21740

Hagerstown

21741

Hagerstown

21746

Hagerstown

21747

Hagerstown

21749

Hagerstown

Similar ZIP Codes in Maryland

ZIP codes with similar median household income in Maryland.

21631

East New Market

$67,589

21061

Glen Burnie

$60,430

21722

Clear Spring

$57,014

21811

Berlin

$60,676

21787

Taneytown

$72,004

21204

Towson

$73,611

21651

Millington

$62,625

21136

Reisterstown

$72,571

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.