What kinds of homes are in Seneca, SC?

Name: Types of homes in Seneca, SC, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Seneca, SC has 4,648 (±361) homes (2020–2024 American Community Survey).

That is about 556 homes per square mile of land.

59.0% are detached single-family houses.

15.6% are in buildings of two to four units.

18.1% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 4,648 (±361)
Detached houses: 59.0%
2–4 unit buildings: 15.6%
5+ unit buildings: 18.1%

Homes in Seneca by building size

Housing units by units in structure, 2020–2024
Building type	Seneca	Oconee County	South Carolina	United States
Single-family, detached	59.0% (±7.7 points)	68.6%	64.5%	61.3%
Single-family, attached (townhouse, rowhouse)	4.3% (±2.9 points)	1.4%	3.7%	6.2%
2 units	7.1% (±4.2 points)	2.2%	1.7%	3.4%
3 or 4 units	8.5% (±5.3 points)	2.1%	2.8%	4.3%
5 to 9 units	7.5% (±3.1 points)	1.5%	4.0%	4.5%
10 to 19 units	6.3% (±3.6 points)	2.1%	3.3%	4.3%
20 or more units	4.3% (±2.4 points)	1.5%	5.6%	10.3%
Mobile home	3.0% (±1.8 points)	20.0%	14.2%	5.6%
Boat, RV, van, etc.	0.0% (±1.0 points)	0.5%	0.2%	0.1%

In Seneca, the share of homes in buildings of five or more units is higher than in Oconee County (5.1%).

It is not measurably different from South Carolina (12.9%).

It is not measurably different from the national figure (19.1%).

Homes in buildings of 5 or more units in places near Seneca

Nearest places with a published estimate, compared with Seneca
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Seneca	—	18.1% (±5.3 points)	—
Utica	2.5 mi	4.3% (±7.6 points)	Lower
West Union	6.8 mi	6.9% (±25.5 points)	Not measurably different
Westminster	7.2 mi	4.0% (±4.9 points)	Lower
Clemson University	7.4 mi	0.0% (±82.3 points)	Not measurably different
Walhalla	8.0 mi	11.5% (±6.3 points)	Not measurably different
Clemson	8.8 mi	37.4% (±5.7 points)	Higher
Keowee Key	10 mi	3.2% (±4.8 points)	Lower
Pendleton	11 mi	5.7% (±3.7 points)	Lower

Nearby places with a measurably lower figure: Utica, SC (4.3%), Westminster, SC (4.0%), Keowee Key, SC (3.2%).

Nearby places with a measurably higher figure: Clemson, SC (37.4%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across Oconee County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Seneca	18.1% (±5.3 points)
2	Walhalla	11.5% (±6.3 points)
3	West Union	6.9% (±25.5 points)
4	Utica	4.3% (±7.6 points)
5	Westminster	4.0% (±4.9 points)
6	Keowee Key	3.2% (±4.8 points)
7	Salem	0.0% (±60.3 points)

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Seneca

How many homes are in Seneca?

Seneca, SC has an estimated 4,648 (±361) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Seneca houses or apartments?

59.0% are detached houses and 4.3% attached houses, while 33.7% are in buildings of two or more units.

How many two-family and small multifamily homes are in Seneca?

15.6% of homes in Seneca are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Seneca city, South Carolina

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Seneca city, South Carolina (place:65095, in state:45).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.