Fastest-growing counties in Idaho
Fastest-growing counties in Idaho
From 2018 to 2019, the U.S. population grew by .48%, its slowest rate in 100 years. Declining births, increasing deaths largely due to the graying Baby Boomer population, and a crackdown on immigration have contributed to many states seeing net population losses in recent years.
But in other pockets of the country, populations are growing. These shifts can be due to job opportunities, high quality of life, easy commutability to job centers, low rents, or any combination of these or other factors. Stacker compiled a list of the fastest-growing counties in Idaho using data from the U.S. Census Bureau. Counties are ranked by the highest population growth from 2010 to 2019, based on 5-year estimates.
A county typically sees population growth as a “bedroom community” (a municipality with an atypically large commuting population) to a large city. These communities are typically quieter than their feeder cities, offer lower rents and a higher quality of living, and are remote enough to be immune to the feeder city’s crime, traffic, and crowds. Keep reading to see if your home county made the list.
#30. Elmore County
--- #1,462 among all counties nationwide
- 2010 to 2019 percent population change: +0.3%
--- #33 among counties in Idaho, #1,503 among all counties nationwide
- 2019 population: 26,743
--- #13 largest county in Idaho, #1,536 largest county nationwide
#29. Lewis County
--- #1,456 among all counties nationwide
- 2010 to 2019 percent population change: +2.0%
--- #29 among counties in Idaho, #1,204 among all counties nationwide
- 2019 population: 3,838
--- #41 largest county in Idaho, #2,913 largest county nationwide
#28. Adams County
--- #1,379 among all counties nationwide
- 2010 to 2019 percent population change: +3.9%
--- #22 among counties in Idaho, #923 among all counties nationwide
- 2019 population: 4,097
--- #40 largest county in Idaho, #2,893 largest county nationwide
#27. Owyhee County
--- #1,374 among all counties nationwide
- 2010 to 2019 percent population change: +1.4%
--- #30 among counties in Idaho, #1,295 among all counties nationwide
- 2019 population: 11,552
--- #26 largest county in Idaho, #2,321 largest county nationwide
#26. Oneida County
--- #1,364 among all counties nationwide
- 2010 to 2019 percent population change: +4.1%
--- #21 among counties in Idaho, #900 among all counties nationwide
- 2019 population: 4,385
--- #38 largest county in Idaho, #2,869 largest county nationwide
#25. Boise County
--- #1,290 among all counties nationwide
- 2010 to 2019 percent population change: +3.6%
--- #24 among counties in Idaho, #971 among all counties nationwide
- 2019 population: 7,378
--- #34 largest county in Idaho, #2,636 largest county nationwide
#24. Lincoln County
--- #1,240 among all counties nationwide
- 2010 to 2019 percent population change: +6.6%
--- #16 among counties in Idaho, #647 among all counties nationwide
- 2019 population: 5,350
--- #37 largest county in Idaho, #2,807 largest county nationwide
#23. Idaho County
--- #1,174 among all counties nationwide
- 2010 to 2019 percent population change: +2.9%
--- #28 among counties in Idaho, #1,072 among all counties nationwide
- 2019 population: 16,411
--- #20 largest county in Idaho, #2,016 largest county nationwide
#22. Gem County
--- #1,131 among all counties nationwide
- 2010 to 2019 percent population change: +3.3%
--- #26 among counties in Idaho, #1,004 among all counties nationwide
- 2019 population: 17,331
--- #19 largest county in Idaho, #1,956 largest county nationwide
#21. Payette County
--- #1,036 among all counties nationwide
- 2010 to 2019 percent population change: +3.6%
--- #23 among counties in Idaho, #970 among all counties nationwide
- 2019 population: 23,260
--- #16 largest county in Idaho, #1,668 largest county nationwide
#20. Valley County
--- #1,018 among all counties nationwide
- 2010 to 2019 percent population change: +8.8%
--- #10 among counties in Idaho, #486 among all counties nationwide
- 2019 population: 10,709
--- #28 largest county in Idaho, #2,372 largest county nationwide
#19. Franklin County
--- #987 among all counties nationwide
- 2010 to 2019 percent population change: +7.7%
--- #12 among counties in Idaho, #551 among all counties nationwide
- 2019 population: 13,464
--- #22 largest county in Idaho, #2,194 largest county nationwide
#18. Blaine County
--- #964 among all counties nationwide
- 2010 to 2019 percent population change: +4.9%
--- #20 among counties in Idaho, #811 among all counties nationwide
- 2019 population: 22,373
--- #17 largest county in Idaho, #1,710 largest county nationwide
#17. Boundary County
--- #961 among all counties nationwide
- 2010 to 2019 percent population change: +9.8%
--- #9 among counties in Idaho, #413 among all counties nationwide
- 2019 population: 11,845
--- #25 largest county in Idaho, #2,301 largest county nationwide
#16. Minidoka County
--- #939 among all counties nationwide
- 2010 to 2019 percent population change: +6.0%
--- #19 among counties in Idaho, #691 among all counties nationwide
- 2019 population: 20,705
--- #18 largest county in Idaho, #1,790 largest county nationwide
#15. Nez Perce County
--- #898 among all counties nationwide
- 2010 to 2019 percent population change: +3.4%
--- #25 among counties in Idaho, #991 among all counties nationwide
- 2019 population: 40,217
--- #9 largest county in Idaho, #1,171 largest county nationwide
#14. Bingham County
--- #894 among all counties nationwide
- 2010 to 2019 percent population change: +3.0%
--- #27 among counties in Idaho, #1,046 among all counties nationwide
- 2019 population: 45,839
--- #7 largest county in Idaho, #1,053 largest county nationwide
#13. Cassia County
--- #841 among all counties nationwide
- 2010 to 2019 percent population change: +7.2%
--- #14 among counties in Idaho, #599 among all counties nationwide
- 2019 population: 23,690
--- #15 largest county in Idaho, #1,656 largest county nationwide
#12. Teton County
--- #774 among all counties nationwide
- 2010 to 2019 percent population change: +21.4%
--- #1 among counties in Idaho, #86 among all counties nationwide
- 2019 population: 11,426
--- #27 largest county in Idaho, #2,327 largest county nationwide
#11. Jerome County
--- #718 among all counties nationwide
- 2010 to 2019 percent population change: +11.5%
--- #8 among counties in Idaho, #317 among all counties nationwide
- 2019 population: 23,730
--- #14 largest county in Idaho, #1,655 largest county nationwide
#10. Madison County
--- #695 among all counties nationwide
- 2010 to 2019 percent population change: +7.4%
--- #13 among counties in Idaho, #575 among all counties nationwide
- 2019 population: 39,100
--- #11 largest county in Idaho, #1,201 largest county nationwide
#9. Latah County
--- #678 among all counties nationwide
- 2010 to 2019 percent population change: +7.8%
--- #11 among counties in Idaho, #547 among all counties nationwide
- 2019 population: 39,505
--- #10 largest county in Idaho, #1,188 largest county nationwide
#8. Bonner County
--- #674 among all counties nationwide
- 2010 to 2019 percent population change: +7.1%
--- #15 among counties in Idaho, #605 among all counties nationwide
- 2019 population: 43,611
--- #8 largest county in Idaho, #1,098 largest county nationwide
#7. Jefferson County
--- #591 among all counties nationwide
- 2010 to 2019 percent population change: +16.4%
--- #5 among counties in Idaho, #164 among all counties nationwide
- 2019 population: 28,534
--- #12 largest county in Idaho, #1,474 largest county nationwide

#6. Bannock County
--- #542 among all counties nationwide
- 2010 to 2019 percent population change: +6.3%
--- #18 among counties in Idaho, #667 among all counties nationwide
- 2019 population: 85,765
--- #5 largest county in Idaho, #667 largest county nationwide
#5. Twin Falls County
--- #395 among all counties nationwide
- 2010 to 2019 percent population change: +13.3%
--- #7 among counties in Idaho, #241 among all counties nationwide
- 2019 population: 84,869
--- #6 largest county in Idaho, #674 largest county nationwide
#4. Bonneville County
--- #327 among all counties nationwide
- 2010 to 2019 percent population change: +14.1%
--- #6 among counties in Idaho, #216 among all counties nationwide
- 2019 population: 114,392
--- #4 largest county in Idaho, #539 largest county nationwide
#3. Kootenai County
--- #242 among all counties nationwide
- 2010 to 2019 percent population change: +16.7%
--- #4 among counties in Idaho, #157 among all counties nationwide
- 2019 population: 157,322
--- #3 largest county in Idaho, #419 largest county nationwide
#2. Canyon County
--- #152 among all counties nationwide
- 2010 to 2019 percent population change: +19.1%
--- #3 among counties in Idaho, #115 among all counties nationwide
- 2019 population: 217,633
--- #2 largest county in Idaho, #305 largest county nationwide
#1. Ada County
--- #61 among all counties nationwide
- 2010 to 2019 percent population change: +20.0%
--- #2 among counties in Idaho, #104 among all counties nationwide
- 2019 population: 456,849
--- #1 largest county in Idaho, #154 largest county nationwide


