[4][5] According to the United States Census Bureau, the city has a total area of 2.01 square miles (5.21 km2), all land.

[7] The 2020 United States census counted 1,464 people, 531 households, and 366 families in Johnson City.

There were 607 housing units at an average density of 283.4 per square mile (109.4/km2).

27.3% of households consisted of individuals and 12.4% had someone living alone who was 65 years of age or older.

[19][20] As of the census[21] of 2010, there were 1,495 people, 533 households, and 381 families residing in the city.

There were 609 housing units at an average density of 303.0 per square mile (117.0/km2).

25.5% of all households were made up of individuals, and 12.4% had someone living alone who was 65 years of age or older.

24.9% of all households were made up of individuals, and 10.5% had someone living alone who was 65 years of age or older.

The community is served by Stanton County USD 452 public school district.

U.S. Highway 160 runs east-west just north of Johnson City.

Highway 160 runs north-south along the west side of Johnson City.