Seneca, South Carolina Population 2020

8,655

Seneca is a city located in South Carolina. With a 2020 population of 8,655, it is the 44th largest city in South Carolina and the 3398th largest city in the United States. Seneca is currently growing at a rate of 1.03% annually and its population has increased by 6.83% since the most recent census, which recorded a population of 8,102 in 2010. Spanning over 8 miles, Seneca has a population density of 1,100 people per square mile.

The average household income in Seneca is $54,658 with a poverty rate of 19.69%. The median rental costs in recent years comes to $628 per month, and the median house value is $166,200. The median age in Seneca is 43.9 years, 40.3 years for males, and 46.5 years for females. For every 100 females there are 83.0 males.

Seneca Demographics

According to the most recent ACS, the racial composition of Seneca was:

  • White: 67.78%
  • Black or African American: 26.72%
  • Two or more races: 2.70%
  • Other race: 2.10%
  • Asian: 0.37%
  • Native American: 0.33%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Seneca, South Carolina is 8,655, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 8,479.The last official US Census in 2010 recorded the population at 8,102.

Seneca, South Carolina Population 2020

Year Total Population Growth Annual Growth Rate
202080,2489371.17%
201979,3119371.18%
201878,3749371.20%
201777,4378691.12%
201676,5686800.89%
201575,8886770.89%
201475,2112870.38%
201374,9243900.52%
201274,5342970.40%
201174,237-104-0.14%
201074,3410.00%

Population by Race

Race Population Percentage
White5,61967.78%
Black or African American2,21526.72%
Two or More Races2242.70%
Some Other Race1742.10%
Asian310.37%
American Indian and Alaska Native270.33%

Seneca Population Pyramid 2020

Seneca Median Age

43.9


Total

40.3


Male

46.5


Female

Seneca Adults

There are 6,633 adults, (1,894 of whom are seniors) in Seneca.

Seneca Age Dependency

74.9

Age Dependency Ratio

40

Old Age Dependency Ratio

35

Child Dependency Ratio

Seneca Sex Ratio

Female

4,529

54.63%

Male

3,761

45.37%

Seneca Households and Families

Seneca Renter vs Owner Occupied by Household Type

Seneca Household Types

Type Owner Renter
Male100%0%
Married81.6%18.4%
All56.9%43.1%
Non Family40.4%59.6%
Female31.9%68.1%

56.9%

Rate of Home Ownership

Type Count Average Size Owned
All3,7502.1956.9
Non Family1,5501.0740.4
Married1,4592.9781.6
Female6232.9231.9
Male1183.43100

2.94

Average Family Size

2.19

Average Household Size

3.1%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

Seneca Education

Education Attained Count Percentage
Less Than 9th Grade5719.34%
9th to 12th Grade5358.75%
High School Graduate1,72728.26%
Some College1,34321.98%
Associates Degree5609.16%
Bachelors Degree88814.53%
Graduate Degree4877.97%

Seneca Educational Attainment by Race

Name Total High School Bachelors
White4,2913,5821,205
Black1,4981,235107
Hispanic1967912
Other Race16467
Multiple Races766620
Asian313131
Native American2712

The highest rate of high school graduation is among asian people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 100.00%.

Name Average Male Female
Overall$30,121$43,139$20,727
Less Than High School$15,795$26,192$9,375
High School Grad$21,918$35,186$18,359
Some College$25,662$32,434$22,034
Bachelors Degree$44,267$53,125$35,625
Graduate Degree$68,472$69,028$67,917

$30,121

Average Earnings

$43,139

Average Male

$20,727

Average Female

Seneca Language

Seneca Language by Age

Seneca Language

93.99% of Seneca residents speak only English, while 6.01% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 3.61% of the population.

Seneca Poverty

Seneca Poverty by Race

Name Total In Poverty Poverty Rate
Black2,20178235.53%
White5,52672313.08%
Multiple22411953.13%
Hispanic2723412.50%

19.69%

Overall Poverty Rate

18.75%

Male Poverty Rate

20.47%

Female Poverty Rate

Poverty in Seneca

The race most likely to be in poverty in Seneca is Multiple, with 53.13% below the poverty level.

The race least likely to be in poverty in Seneca is Hispanic, with 12.50% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 8.52%. Among those working part-time, it was 18.07%, and for those that did not work, the poverty rate was 17.30%.

Name Poverty
Some College19.18%
Less Than High School18.16%
High School13.30%
Bachelors or Greater5.85%
Name Poverty
Female Unemployed52.25%
Female Employed21.21%
Male Employed2.48%
Male Unemployed0.00%

Seneca Income

Seneca Income by Household Type

Name Median Mean
Households$38,158$54,658
Families$53,670$68,647
Married Families$66,412-
Non Families$21,534$33,809

Seneca Marital Status

Seneca Marital Status

Marriage Rates

45.6%

Overall Marriage Rate

53.1%

Male Marriage Rate

39.9%

Female Marriage Rate

Seneca Married by Age and Sex

Seneca Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.

Seneca Marital Status by Race

Seneca Veterans

995

Number of Veterans

961

Male Veterans

34

Female Veterans

War Veterans
Vietnam381
First Gulf War252
Second Gulf War185
Korea98
World War II31
Name Veterans % of Total
White66514.54%
Black31818.06%
Indian1244.44%
Hispanic83.48%

$Seneca Veterans by Education

9.05%

Veteran Poverty Rate

46.73%

Veteran Disability Rate

Seneca Employment Status

52.1%

Labor Force Participation

49.6%

Employment Rate

4.8%

Unemployment Rate

Seneca Place of Birth

Origin of Non-Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

61.48%

Born in South Carolina

96.85%

Native Born

3.15%

Foreign Born

0.97%

Non Citizen

Place of Birth

96.85% of Seneca residents were born in the United States, with 61.48% having been born in South Carolina. 0.97% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Year Population Growth Annual Growth Rate
20208,655881.03%
20198,567881.04%
20188,4791271.52%
20178,352881.06%
20168,264610.74%
20158,203340.42%
20148,169720.89%
20138,097190.24%
20128,07890.11%
20118,069-54-0.66%
20108,1234710.60%
20007,652-74-0.10%
19907,7262900.38%
19807,4361,4092.12%
19706,0278001.43%
19605,2271,5783.66%
19503,6490.00%