Demographics of Seneca city, South Carolina

Seneca city, South Carolina had 9,424 people on July 1, 2025, by the Census Bureau’s estimate: +573 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

Seneca city, in four figures

9,424
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 8,993 ±78.; +6.5%
Change since July 2020: +573 people.; 39.6 ±5.2
Median age: ACS 2020–⁠2024.; $52,022 ±$8,158
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

Seneca city, South Carolina's population grew 6.5% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of Seneca city, South Carolina's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

Source: The Census Bureau

About this chart

The figures

Seneca city, South Carolina's population grew 6.5% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of Seneca city, South Carolina's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	8,851	100.0	100.0
2021	8,922	100.8	100.2
2022	8,995	101.6	100.7
2023	9,098	102.8	101.6
2024	9,217	104.1	102.5
2025	9,424	106.5	103.1

Population of Seneca city, South Carolina on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	8,851	—
2021	8,922	+71
2022	8,995	+73
2023	9,098	+103
2024	9,217	+119
2025	9,424	+207

Age, 2020–2024

The median age is 39.6 ±5.2: for men 36.6 ±8.6 and for women 40.5 ±4.9. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in Seneca city by age, ACS 2020–2024
Age	People	Share	South Carolina	United States
Under 5	712 ±260	7.9% ±2.9	5.5% ±<0.1	5.6% ±<0.1
5 to 17	953 ±258	10.6% ±2.9	16.0% ±0.1	16.3% ±<0.1
18 to 24	593 ±245	6.6% ±2.7	9.1% ±0.1	9.1% ±<0.1
25 to 44	2,820 ±515	31.4% ±5.7	25.3% ±0.1	26.9% ±<0.1
45 to 64	2,080 ±349	23.1% ±3.9	25.2% ±0.1	24.8% ±<0.1
65 and over	1,835 ±282	20.4% ±3.1	18.9% ±0.1	17.2% ±<0.1

Income and poverty, 2020–2024

Median household income is $52,022 ±$8,158, and income per person $34,204 ±$5,029, in 2024 dollars. The median is $69,324 ±$570 in South Carolina and $80,734 ±$166 in the United States.

Households by income

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Households in Seneca city by income, ACS 2020–2024
Household income	Households	Share	South Carolina	United States
Under $25,000	958 ±256	23.5% ±5.9	17.0% ±0.2	14.6% ±<0.1
$25,000 to $49,999	990 ±350	24.3% ±8.3	19.6% ±0.3	16.7% ±<0.1
$50,000 to $74,999	620 ±192	15.2% ±4.5	17.0% ±0.3	15.5% ±<0.1
$75,000 to $99,999	335 ±124	8.2% ±3.0	13.1% ±0.2	12.6% ±<0.1
$100,000 to $149,999	760 ±284	18.6% ±6.8	16.4% ±0.2	17.5% ±<0.1
$150,000 to $199,999	248 ±109	6.1% ±2.6	8.0% ±0.2	9.6% ±<0.1
$200,000 or more	79 to 263	2.0% to 6.4%	8.9% ±0.2	13.4% ±0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in Seneca city by age, ACS 2020–2024
Age	Below poverty	Rate	South Carolina	United States
All ages	1,980 ±561	22.1% ±6.3	14.1% ±0.2	12.5% ±0.1
Under 18	776 ±278	46.6% ±13.0	19.4% ±0.4	16.1% ±0.1
18 to 59	895 ±251	18.9% ±5.0	13.1% ±0.2	11.6% ±0.1
60 and over	309 ±150	12.1% ±5.5	11.6% ±0.3	11.0% ±<0.1

Housing, 2020–2024

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Housing in Seneca city, ACS 2020–2024
Measure	Seneca city	South Carolina	United States
Housing units	4,648 ±361	2,443,039 ±311	143,775,355 ±10,234
Occupied	87.8% ±3.7	86.7% ±0.2	89.9% ±0.1
Vacant	12.2% ±4.6	13.3% ±0.2	10.1% ±0.1
Owner occupied	51.4% ±7.5	71.9% ±0.3	65.2% ±0.3
Renter occupied	48.6% ±8.7	28.1% ±0.3	34.8% ±0.1
Median home value	$240,000 ±$13,939	$259,000 ±$1,421	$332,700 ±$236
Median gross rent	$807 ±$113	$1,180 ±$9	$1,413 ±$2
Median year built	1983 ±7	1992 ±1	1980 ±1

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in Seneca city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	South Carolina	United States
Hispanic or Latino	572 ±260	6.4% ±2.9	7.4% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	6,551 ±505	72.8% ±5.6	61.9% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	1,563 ±497	17.4% ±5.5	24.6% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	11 to 133	0.1% to 1.5%	1.7% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	4 to 134	< 0.1% to 1.5%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 20	0% to 0.2%	< 0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 20	0% to 0.2%	0.5% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	44 to 288	0.5% to 3.2%	3.7% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in Seneca city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	South Carolina	United States
Born in the state	5,120 ±578	56.9% ±6.4	52.6% ±0.2	57.3% ±<0.1
Born in another state	3,552 ±560	39.5% ±6.2	40.4% ±0.2	26.9% ±<0.1
Born a citizen outside the states	0 to 182	0% to 2.0%	1.2% ±0.1	1.7% ±<0.1
Born abroad	235 ±111	2.6% ±1.2	5.8% ±0.1	14.1% ±<0.1
Naturalized citizens	48 to 182	0.5% to 2.0%	2.6% ±0.1	7.4% ±<0.1
Not citizens	52 to 188	0.6% to 2.1%	3.2% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Seneca city among the places of South Carolina

68th of 102 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the South Carolina page.

Places of South Carolina near Seneca city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Murrells Inlet CDP	10,044 ±881
Lugoff CDP	9,786 ±705
Woodfield CDP	9,465 ±1,464
Laurens city	9,336 ±27
Litchfield Beach CDP	9,044 ±698
Seneca city	8,993 ±78
York city	8,969 ±35
Lancaster city	8,921 ±22
Sangaree CDP	8,681 ±1,848
Georgetown city	8,565 ±21
Travelers Rest city	8,370 ±31

Rankings this appears in

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Compiled automatically from Census Bureau population estimates — incorporated places and New England towns and American Community Survey 5-year estimates — table-based Summary File by a checked SQL query · Editor: Kian O'Connor · How this site is built

Data retrieved September 25, 2026