🇺🇸 United States ZIP Code

STANDARD

25403

Martinsburg

ZIP Code 25403 is a standard zip code serving Martinsburg, Martinsburg, West Virginia (WV), in Berkeley County, United States. It has an estimated population of 12,591 with a median household income of $74,200. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: West Virginia (WV)
County: Berkeley
City: Martinsburg
Timezone: America/New_York

Coordinates

Latitude: 39.522700
Longitude: -77.974700

Geographic Details

Land Area: 37.34 mi²
Population Density: 337.0 people per mi² (65th percentile)
Bounding Box: 39.559729°N, 39.402754°S, -77.919440°E, -78.089651°W

With 12,591 residents spread across 37.34 square miles, this area has a population density of 337.0 people per square mile.

Demographics

12,591

Population

70th percentile

$74,200

Median Income

85th percentile

$205,800

Median Home Value

75th percentile

37.34 mi²

Land Area

The median household income in 25403 is $74,200, and the median home value is $205,800. This places the area in the top 25% nationally for household income.

Housing

4,980

Total Units

4,624

Occupied Units

92.9%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Martinsburg, WV.

25401

Martinsburg

25402

Martinsburg

25404

Martinsburg

25405

Martinsburg

Similar ZIP Codes in West Virginia

ZIP codes with similar median household income in West Virginia.

25443

Shepherdstown

$69,125

25442

Shenandoah Junction

$73,949

25081

Foster

$72,450

25314

Charleston

$80,853

25425

Harpers Ferry

$67,365

25560

Scott Depot

$71,284

26508

Morgantown

$64,144

25414

Charles Town

$72,833

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.