Preston is a city located in Franklin County Idaho. It is also the county seat of Franklin County. With a 2020 population of 5,689, it is the 31st largest city in Idaho and the 4421st largest city in the United States . Preston is currently growing at a rate of 1.17% annually and its population has increased by 9.32% since the most recent census, which recorded a population of 5,204 in 2010. Preston reached it's highest population of 5,689 in 2021. Spanning over 7 miles, Preston has a population density of 837 people per square mile.
The average household income in Preston is $63,868 with a poverty rate of 16.35%. The median rental costs in recent years comes to $657 per month, and the median house value is $168,100. The median age in Preston is 35.8 years, 31 years for males, and 42.1 years for females.