🇺🇸 United States ZIP Code

STANDARD

29678

Seneca

ZIP Code 29678 is a standard zip code serving Seneca, Seneca, South Carolina (SC), in Oconee County, United States. It has an estimated population of 21,676 with a median household income of $36,890. 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: Oconee
City: Seneca
Timezone: America/New_York

Coordinates

Latitude: 34.682800
Longitude: -82.936200

Geographic Details

Land Area: 79.04 mi²
Water Area: 7.54 mi²
Population Density: 274.0 people per mi² (65th percentile)
Bounding Box: 34.705525°N, 34.521647°S, -82.822714°E, -83.049445°W

With 21,676 residents spread across 79.04 square miles, this area has a population density of 274.0 people per square mile.

Demographics

21,676

Population

80th percentile

$36,890

Median Income

20th percentile

$115,700

Median Home Value

40th percentile

79.04 mi²

Land Area

The median household income in 29678 is $36,890, and the median home value is $115,700. This is below the national average for household income.

Housing

10,477

Total Units

8,834

Occupied Units

84.3%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Seneca, SC.

29672

Seneca

29679

Seneca

Similar ZIP Codes in South Carolina

ZIP codes with similar median household income in South Carolina.

29817

Blackville

$32,456

29070

Leesville

$41,633

29458

Mc Clellanville

$36,993

29153

Sumter

$36,146

29554

Hemingway

$32,063

29927

Hardeeville

$39,450

29440

Georgetown

$33,289

29488

Walterboro

$33,692

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.