Zip Code 29678
Seneca, South Carolina — Oconee County
📍 ZIP code 29678 is in Seneca, Oconee County, South Carolina.
ZIP code 29678 is located in Seneca, Oconee County, South Carolina. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 23,507. The area code for ZIP code 29678 is 864.
Quick Answer
Zip code 29678 is in Seneca, South Carolina (Oconee County). It has a population of 23,507, median household income of $49,699, and median home value of $205,600.
Population
23,507
Income
$49,699
Home Value
$205,600
Climate
89°F / 34°F
About Zip Code 29678
Zip code 29678 is located in Seneca, South Carolina, within Oconee County. Home to approximately 23,507 residents, this area sits at an elevation of 809 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 864.
The median household income is $49,699 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $205,600, and the cost of living index is 64 (36% below the national average of 100).
Summers average a high of 89°F while winters drop to 34°F. The area receives about 49 in of rain annually. The zip code covers 79 square miles of land area and 7.5 square miles of water.
Key Statistics
23,507
$49,699
$205,600
Eastern (EST/EDT)
864
809 ft
79 sq mi
38.6
11,742
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Compare With Nearby Zip Codes
| Metric | 29678 | 29665 | 29631 | 29689 | 29672 | 29643 |
|---|---|---|---|---|---|---|
| City | Seneca, SC | Newry, SC | Clemson, SC | Townville, SC | Seneca, SC | Fair Play, SC |
| Population | 23,507 | 393 | 16,363 | 4,147 | 12,364 | 2,887 |
| Median Income | $49,699 | $42,550 | $50,217 | $71,250 | $87,521 | $85,729 |
| Home Value | $205,600 | $135,300 | $361,500 | $337,100 | $394,200 | $265,000 |
| Cost of Living | 64 | 60 | 101 | 96 | 122 | 106 |
| Median Age | 38.6 | 58.2 | 23.5 | 47.9 | 52.8 | 49.5 |
Cost of Living
100 = National Average. Seneca's cost of living is 36% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
4.1x
Demographics
Zip code 29678 has a population of 23,507 people with a median age of 38.6. There are 11,742 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Seneca (29678) population trend from 2010 to 2024
↓ -34.2%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
89°F
34°F
49 in
0 in
Seneca experiences warm summers with average highs around 89°F. Winters are mild with lows averaging 34°F. The area receives virtually no snowfall.
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Housing & Economy
Median Home Value
$205,600
Median Household Income
$49,699
With 11,742 housing units across 79 square miles, 29678 has a housing density of 149 units per square mile. The home price-to-income ratio is 4.1x.
Location & Geography
Latitude
34.6345°
Longitude
-82.9373°
Land Area
79 sq mi
Water Area
7.5 sq mi
Nearby Zip Codes
Zip codes closest to 29678 (Seneca, SC) with distances:
All Zip Codes in Seneca, SC
Other zip codes serving Seneca:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 29678's $49,699. A way to compare Seneca to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 29678 (Seneca, SC). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Seneca, South Carolina?
Seneca, South Carolina uses zip code 29678 along with 1 other zip codes.
What county is zip code 29678 in?
Zip code 29678 is located in Oconee County, South Carolina.
What is the population of zip code 29678?
The population of zip code 29678 is 23,507 with a median age of 38.6.
Is 29678 in Seneca, South Carolina?
Yes, zip code 29678 is in Seneca, Oconee County, South Carolina. The area code is 864.
Frequently Asked Questions
What city is zip code 29678 in?
Zip code 29678 is in Seneca, South Carolina. It is part of Oconee County and uses the Eastern (EST/EDT) timezone.
What is zip code 29678?
Zip code 29678 is a U.S. postal code in Seneca, South Carolina (Oconee County). It has a population of 23,507 and covers 79 square miles.
What is the population of zip code 29678?
The population of zip code 29678 (Seneca, SC) is 23,507 with a median age of 38.6. There are approximately 11,742 housing units in this area.
What is the median income in zip code 29678?
The median household income in zip code 29678 (Seneca, SC) is $49,699 per year. The cost of living index is 64 (100 = national average).
What is the average home price in zip code 29678?
The median home value in zip code 29678 (Seneca, SC) is $205,600. The cost of living index is 64 compared to the national average of 100.
What county is zip code 29678 in?
Zip code 29678 is located in Oconee County, South Carolina. The primary city is Seneca.
What is the area code for zip code 29678?
Zip code 29678 in Seneca, SC uses area code 864. It is located in the Eastern (EST/EDT) timezone.
Is zip code 29678 a good place to live?
Zip code 29678 (Seneca, SC) has a cost of living index of 64 (100 = national average), a median household income of $49,699, and median home values of $205,600. The median age is 38.6. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 29678?
The cost of living index for zip code 29678 (Seneca, SC) is 64, where 100 represents the national average. This area is below the national average. Median home value: $205,600.
What schools serve zip code 29678?
Zip code 29678 in Seneca, South Carolina is served by the local school district of Oconee County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.