Tetonia is a city located in Idaho. With a 2020 population of 280, it is the 157th largest city in Idaho and the 15570th largest city in the United States. Tetonia is currently declining at a rate of -0.36% annually but its population has increased by 4.09% since the most recent census, which recorded a population of 269 in 2010. Tetonia reached it's highest population of 282 in 2018. Spanning over 1 miles, Tetonia has a population density of 493 people per square mile.
The average household income in Tetonia is $69,607 with a poverty rate of 6.90%. The median rental costs in recent years comes to $591 per month, and the median house value is $193,800. The median age in Tetonia is 39 years, 36.7 years for males, and 39.6 years for females. For every 100 females there are 94.2 males.