🇺🇸 United States ZIP Code

STANDARD

29420

North Charleston

ZIP Code 29420 is a standard zip code serving North Charleston, North Charleston, South Carolina (SC), in Dorchester County, United States. It has an estimated population of 21,834 with a median household income of $56,864. 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: Dorchester
City: North Charleston
Timezone: America/New_York

Coordinates

Latitude: 32.933600
Longitude: -80.102600

Geographic Details

Land Area: 11.21 mi²
Water Area: 0.16 mi²
Population Density: 1947.0 people per mi² (85th percentile)
Bounding Box: 32.969251°N, 32.900432°S, -80.047462°E, -80.152809°W

With 21,834 residents spread across 11.21 square miles, this area has a population density of 1947.0 people per square mile.

Demographics

21,834

Population

80th percentile

$56,864

Median Income

65th percentile

$162,600

Median Home Value

60th percentile

11.21 mi²

Land Area

The median household income in 29420 is $56,864, and the median home value is $162,600.

Housing

8,389

Total Units

7,631

Occupied Units

91.0%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in North Charleston, SC.

29405

North Charleston

29415

North Charleston

29418

North Charleston

29419

North Charleston

Similar ZIP Codes in South Carolina

ZIP codes with similar median household income in South Carolina.

29732

Rock Hill

$56,825

29054

Gilbert

$54,086

29369

Moore

$61,831

29438

Edisto Island

$57,328

29902

Beaufort

$51,383

29585

Pawleys Island

$55,471

29414

Charleston

$63,805

29717

Hickory Grove

$49,375

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.