Junction City is the southernmost settlement in the state of Arkansas.

[3] According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.8 km2), all land.

As of the 2020 United States census, there were 503 people, 271 households, and 202 families residing in the city.

At the 2000 census there were 721 people in 251 households, including 186 families, in the city.

Public education for early childhood, elementary and secondary students is primarily provided by the Junction City School District, which includes: