New Plymouth is a city located in Idaho. With a 2020 population of 1,531, it is the 70th largest city in Idaho and the 8639th largest city in the United States. New Plymouth is currently growing at a rate of 0.39% annually but its population has decreased by -0.46% since the most recent census, which recorded a population of 1,538 in 2010. Spanning over 1 miles, New Plymouth has a population density of 2,227 people per square mile.
The average household income in New Plymouth is $55,871 with a poverty rate of 19.72%. The median rental costs in recent years comes to $673 per month, and the median house value is $102,200. The median age in New Plymouth is 35.5 years, 31.6 years for males, and 41.1 years for females. For every 100 females there are 104.3 males.