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City ZIP codes · South Carolina

Seneca, SC ZIP Codes

3 ZIP codes use the postal name Seneca, South Carolina (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 1 for PO boxes or a single organization. Median household income runs from $52,550 in 29678 to $90,650 in 29672, 1.7 times as much (Census Bureau, ACS 2020-2024). Seneca's most populous ZIP code is 29678, with 23,767 people (ACS 2020-2024); 8% of its land is in the city of Seneca.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Seneca's ZIP codes?

29672: $91k median household income29678: $53k median household income296782967229672: $91k median household income29678: $53k median household income296782967229672: $91k median household income29678: $53k median household income2967829672
The 2 residential ZIP codes named Seneca, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Seneca's ZIP codes?

The highest median household income is in 29672 ($90,650), the lowest in 29678 ($52,550). Home values run from $225,500 in 29678 to $482,100 in 29672.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 2 residential ZIP codes of Seneca

Residential ZIP codes with the postal name Seneca, SC, largest first (ACS 2020-2024); sort by any column
County
29678 Oconee County 23,767 298 $53k $226k
29672 Oconee County 12,750 326 $91k $482k

Download the 3 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Seneca

1 ZIP code named Seneca has no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Seneca, SC: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
29679Oconee County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Seneca's ZIP codes reach?

Seneca's residential ZIP codes lie in Oconee County.

Which places do Seneca's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Seneca's residential ZIP codes cover Seneca itself and 1 other place, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

  • Utica census-designated 29678

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Seneca's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Seneca starts with 296.

Three-digit prefixes of Seneca's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Seneca's
PrefixSectional centerHereAll codes
296 Greenville, SC (SCF 296) 3 88

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.