Lewiston is a city located in Nez Perce County Idaho. It is also the county seat of Nez Perce County. With a 2020 population of 32,978, it is the 10th largest city in Idaho and the 1194th largest city in the United States . Lewiston is currently growing at a rate of 0.29% annually and its population has increased by 3.40% since the most recent census, which recorded a population of 31,894 in 2010. Lewiston reached it's highest population of 32,978 in 2021. Spanning over 18 miles, Lewiston has a population density of 1,906 people per square mile.
The average household income in Lewiston is $69,580 with a poverty rate of 13.12%. The median rental costs in recent years comes to $722 per month, and the median house value is $189,400. The median age in Lewiston is 39.8 years, 38.4 years for males, and 41.1 years for females.