Johnston, South Carolina

Johnston population, 2020 to 2024

Johnston added 213 residents from July 2020 to July 2024, a change of +10.6%. In the latest year it moved by +63.

Johnston covers 2.62 square miles of land and 0.09 of water, for 845 people per square mile of land. The median South Carolina place of 5,000+ has 1,356, so Johnston is less dense than the typical town.

What county Johnston is in

All of Johnston's residents live in Edgefield County, which had 29,455 residents in 2024. Johnston holds 7.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Johnston

1 ZIP Code Tabulation Area (ZCTA) overlaps Johnston by at least 10% of the ZCTA's or the town's land: 29832. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a town that annexed land after 2020 may reach into ZIP codes not listed here.

Where Johnston is

The Census internal point of Johnston is at 33.833400, -81.804800. Columbia, the capital, is 45.6 miles ENE in a straight line. The nearest larger place is Edgefield, SC (4,147 people), 7.8 miles away. The nearest city of 100,000 or more is Augusta-Richmond County, GA, 35.9 miles away.

Daylight in Johnston

At 33.83° N, Johnston gets about 14 h 24 min of daylight around the June solstice and 9 h 54 min around the December solstice, a swing of 4 h 30 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Johnston

The eight nearest incorporated places of 1,000+ in South Carolina, measured between internal points. The closest is Edgefield, 7.8 miles away, with 4,147 people.