🇺🇸 United States ZIP Code

STANDARD

29487

Wadmalaw Island

ZIP Code 29487 is a standard zip code serving Wadmalaw Island, Wadmalaw Island, South Carolina (SC), in Charleston County, United States. It has an estimated population of 2,725 with a median household income of $47,068. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: South Carolina (SC)
County: Charleston
City: Wadmalaw Island
Timezone: America/New_York

Coordinates

Latitude: 32.652900
Longitude: -80.182900

Geographic Details

Land Area: 41.90 mi²
Water Area: 8.73 mi²
Population Density: 65.0 people per mi² (45th percentile)
Bounding Box: 32.717826°N, 32.579370°S, -80.075534°E, -80.271320°W

With 2,725 residents spread across 41.90 square miles, this area has a population density of 65.0 people per square mile.

Demographics

2,725

Population

45th percentile

$47,068

Median Income

45th percentile

$270,600

Median Home Value

85th percentile

41.90 mi²

Land Area

The median household income in 29487 is $47,068, and the median home value is $270,600.

Housing

1,324

Total Units

1,099

Occupied Units

83.0%

Occupancy Rate

Similar ZIP Codes in South Carolina

ZIP codes with similar median household income in South Carolina.

29365

Lyman

$50,755

29743

Smyrna

$45,368

29929

Islandton

$43,866

29472

Ridgeville

$43,324

29712

Edgemoor

$43,750

29687

Taylors

$49,773

29436

Cross

$42,500

29682

Six Mile

$41,686

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.