Johnston, SC

Town in Edgefield County, SC, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

2,132

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

46.9

years ∙ half population younger than 46.9, half older

Diversity Index

52.4%

chance two random people differ in race and ethnicity

Nativity

3.1%

foreign-born population

96.9%Native

3.1% Foreign-born

Geographic Context

Location, size, and surroundings

About

Johnston is a town within Edgefield County, South Carolina, United States.

Location

Town in Edgefield County, SC, US

Co-ordinates

DEC33.833383° N, 81.804823° W

DMS33° 50′ 00.18″ N, 81° 48′ 17.36″ W

Population Density & area

813.7/sq mi (314/km²)

Total Area

2.71 sq mi (7.01 km²)

Land Area

2.62 sq mi (6.79 km²) · 96.9%

Water Area

0.09 sq mi (0.22 km²) · 3.1%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

44.6% male

Male 44.6%

Female 55.4%

males per 100 females

Johnston 80.4

Edgefield County 119.3

South Carolina 94.8

Nativity

3.1%

foreign-born population

96.9%Native

3.1% Foreign-born

% Foreign-born

Johnston 3.1%

Edgefield County 4%

South Carolina 5.8%

Age Distribution

How the population is spread across age groups

Median Age

46.9

years ∙ half population younger than 46.9, half older

Johnston

46.9

Edgefield County

41.6

South Carolina

40.2

Dependency ratio

104.8

dependents per 100 working-age adults

Johnston 104.8

Edgefield County 57

South Carolina 67.5

AGE DISTRIBUTION

Distribution of age group

Median age

	Johnston	Edgefield County	South Carolina
Age Group
Children (Under 18)	20.8%	16.6%	21.4%
Working age (18-64)	48.8%	63.7%	59.7%
Senior (65+)	30.4%	19.7%	18.9%
Dependency ratio
Total dependency ratio	104.8	57	67.5
Child dependency ratio	42.6	26	35.9
Old-age dependency ratio	62.2	31	31.6

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

29%

Black

62.4%

Asian

0.3%

Hispanic

2.5%

Other

5.8%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

52.4%

chance two random people differ in race and ethnicity

Johnston 52.4%

Edgefield County 58.2%

South Carolina 54.9%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Johnston population

Racial and ethnic composition — Johnston vs Edgefield County vs South Carolina. Source: ACS 2020-2024 5-Year Estimates.
	Johnston	Edgefield County	South Carolina
Hispanic or Latino	2.5%	7.2%	7.4%
Mexican	2.5%	4.6%	3.4%
Puerto Rican	0%	0.2%	1%
Cuban	0%	0%	0.3%
Other Hispanic / Latino	0%	2.4%	2.7%
Not Hispanic or Latino	97.5%	92.8%	92.6%
One race	93%	87.8%	88.9%
White	29%	56.5%	61.9%
Black or African American	62.4%	30.1%	24.6%
American Indian and Alaska Native	0.2%	0.1%	0.2%
Asian	0.3%	0.3%	1.7%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	1%	0.8%	0.5%
Two or more races (Multiracial)	4.5%	5%	3.7%

Household & Families Composition

Household size, type, and family structure

Household structure

48.5% family

Family 48.5%

Non family 51.5%

% family households

Johnston 48.5%

Edgefield County 71.7%

South Carolina 65%

Average household size

2.13

persons per household

Johnston

2.13

Edgefield County

2.56

South Carolina

2.44

Household & Family COMPOSITION

Households

Percentage of Johnston population

	Johnston	Edgefield County	South Carolina
Total households	1,002	9,768	2,117,989
Average houshold size	2.13	2.56	2.44
Family households	486	7,005	1,377,369
Average family size	3.12	2.98	3.01
Married couple family	218	5,201	998,170
Other families	268	1,804	379,199
Male householder	80	264	95,077
Female householder	188	1,540	284,122
Non-family households	516	2,763	740,620
One-person households	467	2,397	618,603
Male householder	158	1,005	273,409
Senior (65+) living alone	67	419	86,486
Female householder	309	1,392	345,194
Senior (65+) living alone	222	900	172,484
Other living arrangements	49	366	122,017

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

1,160

housing units

Johnston 1,160

Edgefield County 11,513

South Carolina 2,443,039

Occupancy status

86.4% occupied

Occupied 86.4%

Vacant 13.6%

vacancy rate

Johnston 13.6%

Edgefield County 15.2%

South Carolina 13.3%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

77.2%

Single family houses

77.2%

Apartments in multi-unit structures

22%

Mobile homes

0.6%

Boat, RV, van, etc

Median Year Built

1967

Half of houses were built before 1967, and half after.

Historic ∙ 1939 or earlier

15.3%

Postwar & mid-century ∙ 1940 - 1969

39.8%

Late 20th century ∙ 1970 - 1999

41.4%

Modern ∙ 2000 or later

3.6%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Johnston	Edgefield County	South Carolina
Rooms per unit
Median rooms	5.2	5.9	5.7
1–3 rooms	20.1%	6.8%	9.1%
4–6 rooms	51.4%	57.4%	55.3%
7+ rooms	28.5%	35.8%	35.5%
Bedrooms
No bedroom / studio	2.9%	1.4%	1.5%
1 bedroom	17.7%	5.6%	5.7%
2 bedrooms	20.7%	22.5%	22.5%
3 bedrooms	46.9%	54%	47.5%
4+ bedrooms	11.8%	16.5%	22.8%
At a glance
Median year built	1967	1989	1993
Total housing units	1,160	11,513	2,443,039

Occupancy Profile

Who is inside and how they use it

Homeownership

63.1% owners

Renter-occupied 36.9%

Owner-occupied 63.1%

homeownership rate

Johnston 63.1%

Edgefield County 80.1%

South Carolina 71.9%

Average household size

2.27

Owner-occupied

1.89

Renter-occupied

owner-occupied average size

Johnston 2.27

Edgefield County 2.62

South Carolina 2.49

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Johnston	Edgefield County	South Carolina
Total occupied units	1,002	9,768	2,117,989
Year moved in
2020 or later	13.8%	23.4%	25.6%
2010 to 2019	43.1%	31.2%	39.4%
2000 to 2009	11.5%	15.2%	16%
1999 or earlier	31.7%	30.2%	19%
Occupants per room
1.00 or fewer	96.6%	97.4%	98%
1.01 to 1.50	3.4%	2.2%	1.4%
1.51 or more	0%	0.4%	0.6%
Vehicles availability
No vehicles	16.7%	7.8%	5.7%
1 vehicle	29.9%	24.2%	32.2%
2 vehicles	34.6%	35.6%	38.5%
3 or more vehicles	18.8%	32.4%	23.6%
House heating fuel used
Gas	30.2%	22.8%	27.1%
Electricity	66.6%	73.2%	70.8%
Solar	0%	0.2%	0.2%
Fuel oil, kerosene etc	2.3%	0.9%	0.5%
All other fuels	0.9%	0.9%	0.6%
No fuel used	0%	2%	0.7%
Selected characteristics
Lacking complete plumbing	0.7%	1.5%	0.3%
Lacking complete kitchen	0%	1.7%	0.6%
No telephone service available	0.4%	0.2%	0.8%

Housing Value

What owner-occupied units are worth

Median home value

$106,600

owner-occupied units

Median value(USD)

Johnston

$106,600

Edgefield County

$202,700

South Carolina

$259,000

Housing Cost Burden

39.9%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

39.9%

Owners without a mortgage

7.3%

Renters

65%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Johnston	Edgefield County	South Carolina
Property value
Median Value	$106,600	$202,700	$259,000
Under $100,000	48.4%	25.2%	16.8%
$100,000 - $200,000	32.4%	24%	19.5%
$200,000 - $300,000	11.4%	22.5%	21.8%
$300,000 - $500,000	7.8%	22%	25.5%
$500,000 - $1,000,000	0%	5.3%	12.7%
$1,000,000 and more	0%	0.9%	3.7%
Owner-occupied households
With a mortgage	40%	47.9%	57.1%
Without a mortgage	60%	52.1%	42.9%
Median monthly owner costs
With a mortgage	$1,073	$1,346	$1,529
Without a mortgage	$394	$420	$448
Gross rent
Median rent	$491	$720	$1,180

Education Profile

How educated is the community and how education pays off

Adults with a college degree

14.9%

of adults 25+ with a bachelor's degree or higher

Johnston 14.9%

Edgefield County 23.3%

South Carolina 32.1%

Adults without a high school diploma

17.1%

of adults (25+) without a high school diploma

Johnston 17.1%

Edgefield County 16.3%

South Carolina 9.9%

School Enrollment

Who is enrolled in school and at what level

School enrollment

362

population (age 3+) enrolled in school

Nursery / Preschool

4.1%

K–12

68.5%

College / Undergraduate

20.4%

Graduate / Professional

6.9%

College-going rate (18-24 yr olds)

50%

of 18-24-year-olds in college or graduate school

Johnston

50%

Edgefield County

17.6%

South Carolina

37.5%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Johnston	Edgefield County	South Carolina
Total enrolled (age 3+)	362	4,581	1,202,992
Nursery / preschool	4.1%	6.3%	5.2%
K–12	68.5%	71.7%	69.7%
Kindergarten	4.7%	6.2%	5.5%
Elementary: Grades 1–4	7.5%	19.3%	20.6%
Elementary: Grades 5–8	29%	19.4%	21.4%
High School: Grades 9–12	27.3%	26.9%	22.2%
College or graduate school	27.3%	22%	25.1%
College, undergraduate	20.4%	15.1%	20%
Graduate, professional school	6.9%	6.9%	5%
College-going rate · 18-24 yr olds	50%	17.6%	37.5%
School type
Public school	86.2%	84.2%	82.7%
Private school	13.8%	15.8%	17.3%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

1,593

population 25 years and over

Total adults (25+)

Less than 9th grade

7.3%

9th-12th, no diploma

9.8%

HS graduate

44.1%

Some college no degree

10.7%

Associates degree

13.1%

Bachelors degree

5.3%

Graduate or professional degree

9.6%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

70.9% · 29.1%

9th-12th, no diploma

28.8% · 71.2%

HS graduate

36.1% · 63.9%

Some college no degree

42.7% · 57.3%

Associates degree

53.1% · 46.9%

Bachelors degree

57.1% · 42.9%

Graduate or professional degree

9.2% · 90.8%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Johnston	Edgefield County	South Carolina
Population (25+)	1,593	20,085	3,677,078
Less than 9th grade	7.3%	4.7%	3.1%
9th–12th, no diploma	9.8%	11.6%	6.8%
High school diploma or GED	44.1%	32.8%	28.2%
Some college, no degree	10.7%	17.3%	19.8%
Associate's degree	13.1%	10.2%	10%
Bachelor's degree or higher	14.9%	23.3%	32.1%
Bachelor's degree	5.3%	14.9%	19.8%
Graduate or professional	9.6%	8.4%	12.3%
High School or higher	82.9%	83.6%	90.1%

Earnings by education level

percentage as applicable

Median Earnings

$28,125

Median earnings for adults 25+, by level

Less than HS graduate

$38,777

HS graduate

$32,857

Some college or associates

$27,583

Bachelors degree

$—

Graduate or professional degree

$—

Poverty Rate

10.5%

for ages 25+, with bachelors degree or higher

Less than HS graduate

59%

HS graduate

36.6%

Some college or associates

21.3%

Bachelors degree or higher

10.5%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Johnston	Edgefield County	South Carolina
Median earnings
Population 25+, with earnings	$28,125	$47,957	$47,658
Less than high school graduate	$38,777	$21,302	$30,223
High school graduate (includes equivalency)	$32,857	$40,897	$37,196
Some college or associate's degree	$27,583	$45,909	$44,160
Bachelor's degree	$—	$58,846	$61,860
Graduate or professional degree	$—	$73,125	$73,671
Poverty rates
Less than high school graduate	59%	31.7%	28.4%
High school graduate (includes equivalency)	36.6%	23.9%	15.6%
Some college or associate's degree	21.3%	10.2%	10.2%
Bachelor's degree or higher	10.5%	3.3%	4.7%

Insights for Johnston, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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