Here are the 2020 county census estimates:
1. Ada 494,399
2. Canyon 237,053
3. Kootenai 170,628
4. Bonneville 122,134
5. Bannock 88,795
6. Twin Falls 88,411
7. Bingham 47,202
8. Bonner 46,817
9. Latah 40,830
10. Nez Perce 40,755
11. Madison 40,318
Ada County should surpass 500,000 people this year. Canyon should hit 250,000 in two years. Kootenai went over 170,000 residents and Bonneville went over 120,000 residents over the past year. Latah passed neighboring Nez Perce as the 9th most populous.
https://www.census.gov/programs-surv...ies-total.html
Here are the 2020 metro census estimates:
1. Boise metro (Ada, Boise, Canyon, Gen, Owyhee) 770,353
2. Coeur d'Alene metro (Kootenai) 170,628
3. Idaho Falls metro (Bonneville, Butte, Jefferson) 155,361
4. Twin Falls metro (Twin Falls, Jerome) 112,989
5. Pocatello metro (Bannock, Power) 96,438
6. Lewiston metro (Nez Perce, Asotin WA) 63,575 [40,755 in ID]
7. Rexburg micro (Fremont, Madison) 53,536
8. Blackfoot micro (Bingham) 47,202
9. Sandpoint micro (Bonner) 46,817
10. Burley micro (Cassia, Minidoka) 45,493
11. Moscow micro (Latah) 40,830
12. Mountain Home (Elmore) 27,448
13. Hailey micro (Blaine, Camas) 24,556
Boise should hit 800,000 in two years. Coeur d'Alene will pass 175,000 next year.
https://www.census.gov/programs-surv...cal-areas.html