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Counties with the most seniors in Idaho
Seniors will comprise more than 20% of U.S. residents in 2030, up from 15% in 2020. By 2034, older adults will outnumber children, according to Census Bureau projections.
Across the U.S., 52 million Americans are 65 years or older, according to the U.S. Census Bureau, and a quarter of them live in just three states: California, Florida, and Texas. By comparison, North Dakota, South Dakota, Vermont, Wyoming, and Alaska each have fewer than 150,000 senior residents. The size of a state's senior population means a lot in terms of demand for resources like health care, affordable housing, assisted living, in-home and nursing care, and support services, and the quality and availability of those resources help determine where seniors migrate.
With baby boomers moving into old age, fewer babies being born, and longer life expectancies, the senior population of America is on a spectacular rise. The lengthening of the U.S. life expectancy has been particularly dramatic, rising to nearly 79 years from 68 years in 1950.
Stacker compiled a list of counties with the most seniors in Idaho using data from the U.S. Census Bureau. Counties are ranked by the highest percentage of residents 65 years or older according to 2020 5-year estimates.
Keep reading to find out which counties have the most seniors in Idaho.
#44. Madison County
- Population aged 65 or older: 6.7%
- Population aged 18 and younger: 26.9%
- Median age: 23.5 years old
--- Median age of males: 24.1 years old
--- Median age of females: 22.8 years old
- Total population: 39,725 people
- Population aged 18 and younger: 26.9%
- Median age: 23.5 years old
--- Median age of males: 24.1 years old
--- Median age of females: 22.8 years old
- Total population: 39,725 people
#43. Jefferson County
- Population aged 65 or older: 11.2%
- Population aged 18 and younger: 33.5%
- Median age: 31.9 years old
--- Median age of males: 31.6 years old
--- Median age of females: 32.3 years old
- Total population: 29,238 people
- Population aged 18 and younger: 33.5%
- Median age: 31.9 years old
--- Median age of males: 31.6 years old
--- Median age of females: 32.3 years old
- Total population: 29,238 people
#42. Teton County
- Population aged 65 or older: 11.6%
- Population aged 18 and younger: 24.5%
- Median age: 37.1 years old
--- Median age of males: 37.5 years old
--- Median age of females: 36.7 years old
- Total population: 11,776 people
- Population aged 18 and younger: 24.5%
- Median age: 37.1 years old
--- Median age of males: 37.5 years old
--- Median age of females: 36.7 years old
- Total population: 11,776 people
#41. Jerome County
- Population aged 65 or older: 12.8%
- Population aged 18 and younger: 30.6%
- Median age: 32.8 years old
--- Median age of males: 33.3 years old
--- Median age of females: 32.3 years old
- Total population: 24,074 people
- Population aged 18 and younger: 30.6%
- Median age: 32.8 years old
--- Median age of males: 33.3 years old
--- Median age of females: 32.3 years old
- Total population: 24,074 people
#40. Elmore County
- Population aged 65 or older: 13.1%
- Population aged 18 and younger: 25.1%
- Median age: 31.8 years old
--- Median age of males: 30.6 years old
--- Median age of females: 33.8 years old
- Total population: 27,043 people
- Population aged 18 and younger: 25.1%
- Median age: 31.8 years old
--- Median age of males: 30.6 years old
--- Median age of females: 33.8 years old
- Total population: 27,043 people
#39. Bonneville County
- Population aged 65 or older: 13.1%
- Population aged 18 and younger: 30.7%
- Median age: 33 years old
--- Median age of males: 32.3 years old
--- Median age of females: 33.5 years old
- Total population: 116,970 people
- Population aged 18 and younger: 30.7%
- Median age: 33 years old
--- Median age of males: 32.3 years old
--- Median age of females: 33.5 years old
- Total population: 116,970 people
#38. Lincoln County
- Population aged 65 or older: 13.3%
- Population aged 18 and younger: 29.3%
- Median age: 35.8 years old
--- Median age of males: 35.2 years old
--- Median age of females: 36 years old
- Total population: 5,342 people
- Population aged 18 and younger: 29.3%
- Median age: 35.8 years old
--- Median age of males: 35.2 years old
--- Median age of females: 36 years old
- Total population: 5,342 people
#37. Latah County
- Population aged 65 or older: 13.8%
- Population aged 18 and younger: 18.4%
- Median age: 29.5 years old
--- Median age of males: 29 years old
--- Median age of females: 30.2 years old
- Total population: 40,052 people
- Population aged 18 and younger: 18.4%
- Median age: 29.5 years old
--- Median age of males: 29 years old
--- Median age of females: 30.2 years old
- Total population: 40,052 people
#36. Canyon County
- Population aged 65 or older: 13.8%
- Population aged 18 and younger: 28.3%
- Median age: 33.8 years old
--- Median age of males: 32.9 years old
--- Median age of females: 34.8 years old
- Total population: 223,890 people
- Population aged 18 and younger: 28.3%
- Median age: 33.8 years old
--- Median age of males: 32.9 years old
--- Median age of females: 34.8 years old
- Total population: 223,890 people
#35. Cassia County
- Population aged 65 or older: 13.9%
- Population aged 18 and younger: 31.7%
- Median age: 33.3 years old
--- Median age of males: 33 years old
--- Median age of females: 34.4 years old
- Total population: 23,847 people
- Population aged 18 and younger: 31.7%
- Median age: 33.3 years old
--- Median age of males: 33 years old
--- Median age of females: 34.4 years old
- Total population: 23,847 people
#34. Franklin County
- Population aged 65 or older: 13.9%
- Population aged 18 and younger: 32.0%
- Median age: 33.5 years old
--- Median age of males: 32.6 years old
--- Median age of females: 34.6 years old
- Total population: 13,736 people
- Population aged 18 and younger: 32.0%
- Median age: 33.5 years old
--- Median age of males: 32.6 years old
--- Median age of females: 34.6 years old
- Total population: 13,736 people
#33. Bingham County
- Population aged 65 or older: 14%
- Population aged 18 and younger: 30.7%
- Median age: 34.1 years old
--- Median age of males: 33.8 years old
--- Median age of females: 34.5 years old
- Total population: 46,246 people
- Population aged 18 and younger: 30.7%
- Median age: 34.1 years old
--- Median age of males: 33.8 years old
--- Median age of females: 34.5 years old
- Total population: 46,246 people
#32. Clark County
- Population aged 65 or older: 14%
- Population aged 18 and younger: 25.8%
- Median age: 37.7 years old
--- Median age of males: 42.1 years old
--- Median age of females: 33 years old
- Total population: 885 people
- Population aged 18 and younger: 25.8%
- Median age: 37.7 years old
--- Median age of males: 42.1 years old
--- Median age of females: 33 years old
- Total population: 885 people
#31. Bannock County
- Population aged 65 or older: 14.3%
- Population aged 18 and younger: 26.1%
- Median age: 34.1 years old
--- Median age of males: 32.9 years old
--- Median age of females: 35.2 years old
- Total population: 86,742 people
- Population aged 18 and younger: 26.1%
- Median age: 34.1 years old
--- Median age of males: 32.9 years old
--- Median age of females: 35.2 years old
- Total population: 86,742 people
#30. Ada County
- Population aged 65 or older: 14.5%
- Population aged 18 and younger: 23.6%
- Median age: 37.2 years old
--- Median age of males: 36.5 years old
--- Median age of females: 38.1 years old
- Total population: 469,473 people
- Population aged 18 and younger: 23.6%
- Median age: 37.2 years old
--- Median age of males: 36.5 years old
--- Median age of females: 38.1 years old
- Total population: 469,473 people
#29. Twin Falls County
- Population aged 65 or older: 15.5%
- Population aged 18 and younger: 27.5%
- Median age: 35 years old
--- Median age of males: 34.6 years old
--- Median age of females: 35.3 years old
- Total population: 86,198 people
- Population aged 18 and younger: 27.5%
- Median age: 35 years old
--- Median age of males: 34.6 years old
--- Median age of females: 35.3 years old
- Total population: 86,198 people
#28. Power County
- Population aged 65 or older: 15.6%
- Population aged 18 and younger: 30.9%
- Median age: 38.8 years old
--- Median age of males: 39.9 years old
--- Median age of females: 34.7 years old
- Total population: 7,635 people
- Population aged 18 and younger: 30.9%
- Median age: 38.8 years old
--- Median age of males: 39.9 years old
--- Median age of females: 34.7 years old
- Total population: 7,635 people
#27. Minidoka County
- Population aged 65 or older: 15.9%
- Population aged 18 and younger: 28.7%
- Median age: 35.2 years old
--- Median age of males: 34.7 years old
--- Median age of females: 35.4 years old
- Total population: 20,817 people
- Population aged 18 and younger: 28.7%
- Median age: 35.2 years old
--- Median age of males: 34.7 years old
--- Median age of females: 35.4 years old
- Total population: 20,817 people
#26. Caribou County
- Population aged 65 or older: 16.7%
- Population aged 18 and younger: 28.4%
- Median age: 37.9 years old
--- Median age of males: 39 years old
--- Median age of females: 37.3 years old
- Total population: 7,028 people
- Population aged 18 and younger: 28.4%
- Median age: 37.9 years old
--- Median age of males: 39 years old
--- Median age of females: 37.3 years old
- Total population: 7,028 people
#25. Camas County
- Population aged 65 or older: 17.1%
- Population aged 18 and younger: 22.5%
- Median age: 44.5 years old
--- Median age of males: 44.5 years old
--- Median age of females: 44.5 years old
- Total population: 1,069 people
- Population aged 18 and younger: 22.5%
- Median age: 44.5 years old
--- Median age of males: 44.5 years old
--- Median age of females: 44.5 years old
- Total population: 1,069 people
#24. Fremont County
- Population aged 65 or older: 17.4%
- Population aged 18 and younger: 25.5%
- Median age: 37.8 years old
--- Median age of males: 39.4 years old
--- Median age of females: 37.4 years old
- Total population: 13,111 people
- Population aged 18 and younger: 25.5%
- Median age: 37.8 years old
--- Median age of males: 39.4 years old
--- Median age of females: 37.4 years old
- Total population: 13,111 people
#23. Gooding County
- Population aged 65 or older: 17.4%
- Population aged 18 and younger: 27.3%
- Median age: 38.6 years old
--- Median age of males: 37.3 years old
--- Median age of females: 40.2 years old
- Total population: 15,280 people
- Population aged 18 and younger: 27.3%
- Median age: 38.6 years old
--- Median age of males: 37.3 years old
--- Median age of females: 40.2 years old
- Total population: 15,280 people
#22. Payette County
- Population aged 65 or older: 18.2%
- Population aged 18 and younger: 26.2%
- Median age: 39.4 years old
--- Median age of males: 37.7 years old
--- Median age of females: 41 years old
- Total population: 23,705 people
- Population aged 18 and younger: 26.2%
- Median age: 39.4 years old
--- Median age of males: 37.7 years old
--- Median age of females: 41 years old
- Total population: 23,705 people
#21. Owyhee County
- Population aged 65 or older: 18.3%
- Population aged 18 and younger: 25.8%
- Median age: 40.4 years old
--- Median age of males: 38.2 years old
--- Median age of females: 42.1 years old
- Total population: 11,724 people
- Population aged 18 and younger: 25.8%
- Median age: 40.4 years old
--- Median age of males: 38.2 years old
--- Median age of females: 42.1 years old
- Total population: 11,724 people
#20. Blaine County
- Population aged 65 or older: 18.6%
- Population aged 18 and younger: 21.6%
- Median age: 43.7 years old
--- Median age of males: 40.9 years old
--- Median age of females: 45.3 years old
- Total population: 22,729 people
- Population aged 18 and younger: 21.6%
- Median age: 43.7 years old
--- Median age of males: 40.9 years old
--- Median age of females: 45.3 years old
- Total population: 22,729 people
#19. Kootenai County
- Population aged 65 or older: 18.9%
- Population aged 18 and younger: 22.8%
- Median age: 40.3 years old
--- Median age of males: 39.5 years old
--- Median age of females: 41.3 years old
- Total population: 161,676 people
- Population aged 18 and younger: 22.8%
- Median age: 40.3 years old
--- Median age of males: 39.5 years old
--- Median age of females: 41.3 years old
- Total population: 161,676 people
#18. Oneida County
- Population aged 65 or older: 19.4%
- Population aged 18 and younger: 28.4%
- Median age: 39.5 years old
--- Median age of males: 39.5 years old
--- Median age of females: 39.5 years old
- Total population: 4,429 people
- Population aged 18 and younger: 28.4%
- Median age: 39.5 years old
--- Median age of males: 39.5 years old
--- Median age of females: 39.5 years old
- Total population: 4,429 people
#17. Nez Perce County
- Population aged 65 or older: 19.8%
- Population aged 18 and younger: 21.2%
- Median age: 40.4 years old
--- Median age of males: 39.4 years old
--- Median age of females: 41.8 years old
- Total population: 40,468 people
- Population aged 18 and younger: 21.2%
- Median age: 40.4 years old
--- Median age of males: 39.4 years old
--- Median age of females: 41.8 years old
- Total population: 40,468 people
#16. Bear Lake County
- Population aged 65 or older: 20.6%
- Population aged 18 and younger: 26.5%
- Median age: 39.4 years old
--- Median age of males: 39.2 years old
--- Median age of females: 39.7 years old
- Total population: 6,054 people
- Population aged 18 and younger: 26.5%
- Median age: 39.4 years old
--- Median age of males: 39.2 years old
--- Median age of females: 39.7 years old
- Total population: 6,054 people
#15. Gem County
- Population aged 65 or older: 21.7%
- Population aged 18 and younger: 23.0%
- Median age: 45 years old
--- Median age of males: 44 years old
--- Median age of females: 46.2 years old
- Total population: 17,771 people
- Population aged 18 and younger: 23.0%
- Median age: 45 years old
--- Median age of males: 44 years old
--- Median age of females: 46.2 years old
- Total population: 17,771 people
#14. Butte County
- Population aged 65 or older: 22.1%
- Population aged 18 and younger: 21.5%
- Median age: 46.8 years old
--- Median age of males: 43.7 years old
--- Median age of females: 49.3 years old
- Total population: 2,603 people
- Population aged 18 and younger: 21.5%
- Median age: 46.8 years old
--- Median age of males: 43.7 years old
--- Median age of females: 49.3 years old
- Total population: 2,603 people
#13. Boundary County
- Population aged 65 or older: 22.4%
- Population aged 18 and younger: 23.3%
- Median age: 43.8 years old
--- Median age of males: 43.1 years old
--- Median age of females: 45 years old
- Total population: 12,156 people
- Population aged 18 and younger: 23.3%
- Median age: 43.8 years old
--- Median age of males: 43.1 years old
--- Median age of females: 45 years old
- Total population: 12,156 people
#12. Benewah County
- Population aged 65 or older: 22.6%
- Population aged 18 and younger: 22.7%
- Median age: 46 years old
--- Median age of males: 45.5 years old
--- Median age of females: 46.5 years old
- Total population: 9,231 people
- Population aged 18 and younger: 22.7%
- Median age: 46 years old
--- Median age of males: 45.5 years old
--- Median age of females: 46.5 years old
- Total population: 9,231 people
#11. Shoshone County
- Population aged 65 or older: 23.1%
- Population aged 18 and younger: 20.2%
- Median age: 46.8 years old
--- Median age of males: 45.5 years old
--- Median age of females: 47.7 years old
- Total population: 12,700 people
- Population aged 18 and younger: 20.2%
- Median age: 46.8 years old
--- Median age of males: 45.5 years old
--- Median age of females: 47.7 years old
- Total population: 12,700 people
#10. Bonner County
- Population aged 65 or older: 24.8%
- Population aged 18 and younger: 19.7%
- Median age: 47.9 years old
--- Median age of males: 47.1 years old
--- Median age of females: 48.6 years old
- Total population: 44,688 people
- Population aged 18 and younger: 19.7%
- Median age: 47.9 years old
--- Median age of males: 47.1 years old
--- Median age of females: 48.6 years old
- Total population: 44,688 people
#9. Washington County
- Population aged 65 or older: 25.4%
- Population aged 18 and younger: 23.0%
- Median age: 45 years old
--- Median age of males: 42.4 years old
--- Median age of females: 46.4 years old
- Total population: 10,128 people
- Population aged 18 and younger: 23.0%
- Median age: 45 years old
--- Median age of males: 42.4 years old
--- Median age of females: 46.4 years old
- Total population: 10,128 people
#8. Boise County
- Population aged 65 or older: 25.8%
- Population aged 18 and younger: 15.8%
- Median age: 54.4 years old
--- Median age of males: 54.9 years old
--- Median age of females: 53.6 years old
- Total population: 7,625 people
- Population aged 18 and younger: 15.8%
- Median age: 54.4 years old
--- Median age of males: 54.9 years old
--- Median age of females: 53.6 years old
- Total population: 7,625 people
#7. Lewis County
- Population aged 65 or older: 26%
- Population aged 18 and younger: 22.4%
- Median age: 48.7 years old
--- Median age of males: 48.8 years old
--- Median age of females: 48.6 years old
- Total population: 3,850 people
- Population aged 18 and younger: 22.4%
- Median age: 48.7 years old
--- Median age of males: 48.8 years old
--- Median age of females: 48.6 years old
- Total population: 3,850 people
#6. Clearwater County
- Population aged 65 or older: 27.3%
- Population aged 18 and younger: 16.3%
- Median age: 50.8 years old
--- Median age of males: 48.4 years old
--- Median age of females: 53.4 years old
- Total population: 8,735 people
- Population aged 18 and younger: 16.3%
- Median age: 50.8 years old
--- Median age of males: 48.4 years old
--- Median age of females: 53.4 years old
- Total population: 8,735 people
#5. Valley County
- Population aged 65 or older: 27.8%
- Population aged 18 and younger: 16.9%
- Median age: 50.4 years old
--- Median age of males: 49.8 years old
--- Median age of females: 50.6 years old
- Total population: 11,085 people
- Population aged 18 and younger: 16.9%
- Median age: 50.4 years old
--- Median age of males: 49.8 years old
--- Median age of females: 50.6 years old
- Total population: 11,085 people
#4. Idaho County
- Population aged 65 or older: 27.8%
- Population aged 18 and younger: 19.4%
- Median age: 50.5 years old
--- Median age of males: 49.1 years old
--- Median age of females: 52 years old
- Total population: 16,511 people
- Population aged 18 and younger: 19.4%
- Median age: 50.5 years old
--- Median age of males: 49.1 years old
--- Median age of females: 52 years old
- Total population: 16,511 people
#3. Lemhi County
- Population aged 65 or older: 30.1%
- Population aged 18 and younger: 17.9%
- Median age: 53.4 years old
--- Median age of males: 52.8 years old
--- Median age of females: 53.6 years old
- Total population: 7,929 people
- Population aged 18 and younger: 17.9%
- Median age: 53.4 years old
--- Median age of males: 52.8 years old
--- Median age of females: 53.6 years old
- Total population: 7,929 people
#2. Adams County
- Population aged 65 or older: 30.1%
- Population aged 18 and younger: 16.3%
- Median age: 55.3 years old
--- Median age of males: 55.9 years old
--- Median age of females: 55.1 years old
- Total population: 4,200 people
- Population aged 18 and younger: 16.3%
- Median age: 55.3 years old
--- Median age of males: 55.9 years old
--- Median age of females: 55.1 years old
- Total population: 4,200 people
#1. Custer County
- Population aged 65 or older: 33.2%
- Population aged 18 and younger: 18.1%
- Median age: 53 years old
--- Median age of males: 54 years old
--- Median age of females: 50.8 years old
- Total population: 4,193 people
- Population aged 18 and younger: 18.1%
- Median age: 53 years old
--- Median age of males: 54 years old
--- Median age of females: 50.8 years old
- Total population: 4,193 people
