ID – 7th Youngest Population in Nation

Idaho continues to be one of the youngest states in the nation, with a median age of 36.8 years, ranking seventh according to recently released results from the U.S. Census Bureau’s 2017-2021 American Community Survey.

This is an increase of 3.1% from the previous Census demographic survey, which covered the 2012-2016 population of the 50 states, District of Columbia and Puerto Rico. Puerto Rico’s median age grew the fastest at 9.4% and North Dakota was the slowest with no change.


Nationally, the median age was 38.4 years, up slightly from its 37.7 years median age in 2012-2016.

Utah retained its ranking as the youngest state in the nation with a median age of 31.3 years. Except for North Dakota, all 50 states, the District of Columbia and Puerto Rico experienced an increase in the median age.

The states and territories with the oldest populations were concentrated on the eastern side of the U.S. These territories, ranked in median age from greatest to least, were Maine (44.7 years), Puerto Rico (43.1 years), New Hampshire (43 years), Vermont (42.7 years) and West Virginia (42.6 years).

Source: U.S. Census Bureau’s 2017-2021 American Community Survey.

Workforce characteristics

  • The average commuting time for Idahoans, increased from 20.4 minutes to 21.2 minutes. Valley County residents reported the shortest median commute time, across the 37 largest counties, at 11.4 minutes. Boise and Lincoln counties — generally accepted as bedroom communities — reported the longest commutes at 35.3 minutes and 32.6 minutes, respectively.
  • The percentage of Idahoans working from home increased from 5.9% to 9.2%.
  • Three Idaho counties, with popular tourist destinations, reported the highest incidence of teleworking: Valley County at 15.8%, Blaine County at 14% and Teton County at 14.1%.


  • Idaho’s median household income increased 14.2% from $55,519 to $63,377, adjusted for inflation to 2021 dollars.
  • Idaho counties with the highest median household income are Teton ($75,837), Ada ($75,115), Blaine ($71,749), Jefferson ($69,097) and Valley ($67,528).
  • Only three counties experienced a decline in median household income: Elmore (-3.4%), Franklin (-0.6%) and Power (-0.3%).
  • Poverty rates improved across most household types, except for female householders with no spouse present and related children under 18 years. Poverty with children in the household is highest in the rural counties of Bear Lake (81%), Bonner (56.6%), Franklin (54.9%), Gooding (72.8%), Jerome (54.4%), Lemhi (79.6%) and Washington (61.9%).


  • The median age, for those moving to Idaho from another state, was 28.9 years.
  • At 8.3%, a significant share of Idaho’s population moved within the same county, over the 2017-2021 period. The national rate was 7.4%.
  • Notable states with the highest levels of movement within the same county included: Nevada at 10.6%, Arizona and District of Columbia at 10.2%, Washington at 9.4%, Alaska at 9%, Utah at 8.9%, Wyoming and Oklahoma at 8.8%, Kansas at 8.7% and Oregon at 8.5%.