🇺🇸 United States ZIP Code

STANDARD

29403

Charleston

ZIP Code 29403 is a standard zip code serving Charleston, Charleston, South Carolina (SC), in Charleston County, United States. It has an estimated population of 20,818 with a median household income of $27,108. 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: Charleston
Timezone: America/New_York

Coordinates

Latitude: 32.797600
Longitude: -79.949300

Geographic Details

Land Area: 5.34 mi²
Water Area: 2.11 mi²
Population Density: 3897.0 people per mi² (90th percentile)
Bounding Box: 32.833423°N, 32.779657°S, -79.915378°E, -79.972323°W

With 20,818 residents spread across 5.34 square miles, this area has a population density of 3897.0 people per square mile.

Demographics

20,818

Population

80th percentile

$27,108

Median Income

5th percentile

$298,000

Median Home Value

85th percentile

5.34 mi²

Land Area

The median household income in 29403 is $27,108, and the median home value is $298,000. This is below the national average for household income.

Housing

10,689

Total Units

9,115

Occupied Units

85.3%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Charleston, SC.

29401

Charleston

29402

Charleston

29406

Charleston

29407

Charleston

29409

Charleston

29412

Charleston

29413

Charleston

29414

Charleston

29416

Charleston

29417

Charleston

Similar ZIP Codes in South Carolina

ZIP codes with similar median household income in South Carolina.

29009

Bethune

$31,098

29201

Columbia

$29,557

29510

Andrews

$25,010

29512

Bennettsville

$29,037

29010

Bishopville

$27,674

29475

Ruffin

$27,245

29556

Kingstree

$28,445

29596

Wallace

$25,000

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.