Johnston, SC Demographics

A map of Johnston's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Black	1,331	1,250	62.4%	62.6%
White	619	596	29.0%	29.8%
Multiracial	96	54	4.5%	2.7%
Hispanic	54	78	2.5%	3.9%
Native American/Other	25	3	1.2%	0.2%
Asian	7	16	0.3%	0.8%

Johnston, South Carolina has an estimated population of 2,132, an increase from the 1,997 recorded in the 2020 Census. The population is 62.4% Black, 29.0% White, 4.5% Multiracial, 2.5% Hispanic, 1.2% Native American/Other, and 0.3% Asian. This demographic dot map shows the population of Johnston, with one dot drawn for each person counted by the Census, color-coded by race.

Johnston has become slightly more racially diverse since the 2020 Census. It is less diverse than South Carolina overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Johnston, that probability was 51.7% in 2020 and 52.3% in the most recent ACS estimates.

Johnston is ranked the 188th most populous place in South Carolina, out of 475 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Johnston was ranked the 191st most populous place in the 2020 Census.

Johnston's White Population

619 residents of Johnston, or 29.0% of the population, identify as White. The share of White residents in Johnston is significantly lower than in South Carolina overall, where 61.9% of the population is White. Johnston ranks 402nd statewide in terms of White residents as a share of the population, out of 475 places.

Since the 2020 Census, Johnston's White population has grown by an estimated 3.9%. White residents' share of Johnston's population has decreased from 29.8% to 29.0%.

Johnston is more White than neighboring Saluda (13.9% White). Johnston is less White than neighboring Ward (33.1% White), Trenton (58.1% White), Edgefield (35.9% White), and Ridge Spring (29.6% White).

Johnston's Black Population

1,331 residents of Johnston, or 62.4% of the population, identify as Black. The share of Black residents in Johnston is significantly higher than in South Carolina overall, where 24.6% of the population is Black. Johnston ranks 67th statewide in terms of Black residents as a share of the population, out of 475 places.

Since the 2020 Census, Johnston's Black population has grown by an estimated 6.5%. Black residents' share of Johnston's population has remained roughly unchanged at 62.4%.

Johnston is more Black than neighboring Ward (59.2% Black), Trenton (37.6% Black), Edgefield (51.2% Black), Ridge Spring (58.8% Black), and Saluda (26.2% Black).

Johnston's Asian Population

7 residents of Johnston, or 0.3% of the population, identify as Asian. The share of Asian residents in Johnston is comparable to the share in South Carolina overall, where 1.7% of the population is Asian. Johnston ranks 163rd statewide in terms of Asian residents as a share of the population, out of 475 places.

Since the 2020 Census, Johnston's Asian population has declined by an estimated 56.3%. Asian residents' share of Johnston's population has decreased from 0.8% to 0.3%.

Johnston is more Asian than neighboring Ward (0% Asian), Trenton (0% Asian), Ridge Spring (0% Asian), and Saluda (0% Asian). Johnston is less Asian than neighboring Edgefield (0.6% Asian).

Johnston's Hispanic Population

54 residents of Johnston, or 2.5% of the population, identify as Hispanic. The share of Hispanic residents in Johnston is slightly lower than in South Carolina overall, where 7.4% of the population is Hispanic. Johnston ranks 227th statewide in terms of Hispanic residents as a share of the population, out of 475 places.

Since the 2020 Census, Johnston's Hispanic population has declined by an estimated 30.8%. Hispanic residents' share of Johnston's population has decreased from 3.9% to 2.5%.

Johnston is less Hispanic than neighboring Ward (6.9% Hispanic), Trenton (3.9% Hispanic), Edgefield (10.4% Hispanic), Ridge Spring (10.8% Hispanic), and Saluda (55.2% Hispanic).

Johnston's Native American/Other Population

25 residents of Johnston, or 1.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Johnston is comparable to the share in South Carolina overall, where 0.7% of the population is Native American/Other. Johnston ranks 411th statewide in terms of Native American/Other residents as a share of the population, out of 475 places.

Since the 2020 Census, Johnston's Native American/Other population has grown by an estimated 733.3%. Native American/Other residents' share of Johnston's population has increased from 0.2% to 1.2%.

Johnston is more Native American/Other than neighboring Ward (0% Native American/Other), Trenton (0% Native American/Other), Edgefield (0.4% Native American/Other), and Ridge Spring (0% Native American/Other). Johnston is less Native American/Other than neighboring Saluda (3.4% Native American/Other).

Johnston's Multiracial Population

96 residents of Johnston, or 4.5% of the population, identify as Multiracial. The share of Multiracial residents in Johnston is comparable to the share in South Carolina overall, where 3.7% of the population is Multiracial. Johnston ranks 334th statewide in terms of Multiracial residents as a share of the population, out of 475 places.

Since the 2020 Census, Johnston's Multiracial population has grown by an estimated 77.8%. Multiracial residents' share of Johnston's population has increased from 2.7% to 4.5%.

Johnston is more Multiracial than neighboring Ward (0.8% Multiracial), Trenton (0.4% Multiracial), Edgefield (1.5% Multiracial), Ridge Spring (0.8% Multiracial), and Saluda (1.2% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.