Johnston is located in Mississippi. Johnston, Mississippi has a population of 1,560.
The median household income in Johnston, Mississippi is $32,140. The median household income for the surrounding county is $36,308 compared to the national median of $69,021. The median age of people living in Johnston is 23.6 years.
The average high temperature in July is 91.2 degrees, with an average low temperature in January of 35.9 degrees. The average rainfall is approximately 62.7 inches per year, with 0 inches of snow per year.
