
Fastest-growing counties in Colorado
Fastest-growing counties in Colorado
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 Colorado 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. Montezuma County
--- #1,053 among all counties nationwide
- 2010 to 2019 percent population change: +3.0%
--- #37 among counties in Colorado, #1,055 among all counties nationwide
- 2019 population: 26,031
--- #21 largest county in Colorado, #1,562 largest county nationwide
#29. Grand County
--- #1,043 among all counties nationwide
- 2010 to 2019 percent population change: +5.3%
--- #33 among counties in Colorado, #762 among all counties nationwide
- 2019 population: 15,303
--- #32 largest county in Colorado, #2,076 largest county nationwide
#28. Alamosa County
--- #1,033 among all counties nationwide
- 2010 to 2019 percent population change: +5.3%
--- #34 among counties in Colorado, #765 among all counties nationwide
- 2019 population: 16,107
--- #31 largest county in Colorado, #2,032 largest county nationwide
#27. Custer County
--- #1,014 among all counties nationwide
- 2010 to 2019 percent population change: +22.5%
--- #5 among counties in Colorado, #73 among all counties nationwide
- 2019 population: 4,776
--- #53 largest county in Colorado, #2,849 largest county nationwide
#26. Gilpin County
--- #1,010 among all counties nationwide
- 2010 to 2019 percent population change: +17.4%
--- #9 among counties in Colorado, #141 among all counties nationwide
- 2019 population: 6,018
--- #47 largest county in Colorado, #2,748 largest county nationwide
#25. Archuleta County
--- #948 among all counties nationwide
- 2010 to 2019 percent population change: +9.2%
--- #24 among counties in Colorado, #457 among all counties nationwide
- 2019 population: 13,253
--- #34 largest county in Colorado, #2,217 largest county nationwide
#24. Montrose County
--- #882 among all counties nationwide
- 2010 to 2019 percent population change: +3.5%
--- #36 among counties in Colorado, #981 among all counties nationwide
- 2019 population: 41,686
--- #17 largest county in Colorado, #1,139 largest county nationwide
#23. Pitkin County
--- #849 among all counties nationwide
- 2010 to 2019 percent population change: +9.4%
--- #22 among counties in Colorado, #441 among all counties nationwide
- 2019 population: 17,926
--- #28 largest county in Colorado, #1,922 largest county nationwide
#22. Park County
--- #841 among all counties nationwide
- 2010 to 2019 percent population change: +9.7%
--- #21 among counties in Colorado, #417 among all counties nationwide
- 2019 population: 17,867
--- #29 largest county in Colorado, #1,926 largest county nationwide
#21. Gunnison County
--- #829 among all counties nationwide
- 2010 to 2019 percent population change: +11.0%
--- #17 among counties in Colorado, #341 among all counties nationwide
- 2019 population: 16,802
--- #30 largest county in Colorado, #1,992 largest county nationwide
#20. Teller County
--- #822 among all counties nationwide
- 2010 to 2019 percent population change: +7.5%
--- #28 among counties in Colorado, #572 among all counties nationwide
- 2019 population: 24,524
--- #24 largest county in Colorado, #1,622 largest county nationwide
#19. Chaffee County
--- #773 among all counties nationwide
- 2010 to 2019 percent population change: +11.5%
--- #14 among counties in Colorado, #318 among all counties nationwide
- 2019 population: 19,557
--- #26 largest county in Colorado, #1,847 largest county nationwide
#18. Routt County
--- #752 among all counties nationwide
- 2010 to 2019 percent population change: +9.4%
--- #23 among counties in Colorado, #442 among all counties nationwide
- 2019 population: 25,072
--- #23 largest county in Colorado, #1,602 largest county nationwide
#17. Elbert County
--- #661 among all counties nationwide
- 2010 to 2019 percent population change: +13.2%
--- #12 among counties in Colorado, #243 among all counties nationwide
- 2019 population: 25,717
--- #22 largest county in Colorado, #1,573 largest county nationwide
#16. Summit County
--- #620 among all counties nationwide
- 2010 to 2019 percent population change: +13.1%
--- #13 among counties in Colorado, #251 among all counties nationwide
- 2019 population: 30,649
--- #18 largest county in Colorado, #1,416 largest county nationwide
#15. Eagle County
--- #598 among all counties nationwide
- 2010 to 2019 percent population change: +7.7%
--- #27 among counties in Colorado, #558 among all counties nationwide
- 2019 population: 54,681
--- #15 largest county in Colorado, #928 largest county nationwide
#14. Garfield County
--- #575 among all counties nationwide
- 2010 to 2019 percent population change: +7.8%
--- #26 among counties in Colorado, #544 among all counties nationwide
- 2019 population: 59,055
--- #13 largest county in Colorado, #877 largest county nationwide
#13. La Plata County
--- #524 among all counties nationwide
- 2010 to 2019 percent population change: +10.9%
--- #18 among counties in Colorado, #347 among all counties nationwide
- 2019 population: 55,617
--- #14 largest county in Colorado, #912 largest county nationwide

#12. Mesa County
--- #419 among all counties nationwide
- 2010 to 2019 percent population change: +6.3%
--- #30 among counties in Colorado, #666 among all counties nationwide
- 2019 population: 151,218
--- #11 largest county in Colorado, #435 largest county nationwide

#11. Pueblo County
--- #400 among all counties nationwide
- 2010 to 2019 percent population change: +6.2%
--- #31 among counties in Colorado, #673 among all counties nationwide
- 2019 population: 165,982
--- #10 largest county in Colorado, #389 largest county nationwide
#10. Broomfield County
--- #316 among all counties nationwide
- 2010 to 2019 percent population change: +28.4%
--- #2 among counties in Colorado, #40 among all counties nationwide
- 2019 population: 67,886
--- #12 largest county in Colorado, #785 largest county nationwide
#9. Boulder County
--- #167 among all counties nationwide
- 2010 to 2019 percent population change: +11.1%
--- #15 among counties in Colorado, #333 among all counties nationwide
- 2019 population: 322,510
--- #8 largest county in Colorado, #214 largest county nationwide
#8. Jefferson County
--- #114 among all counties nationwide
- 2010 to 2019 percent population change: +8.7%
--- #25 among counties in Colorado, #488 among all counties nationwide
- 2019 population: 574,798
--- #4 largest county in Colorado, #114 largest county nationwide

#7. Larimer County
--- #99 among all counties nationwide
- 2010 to 2019 percent population change: +18.4%
--- #8 among counties in Colorado, #124 among all counties nationwide
- 2019 population: 344,786
--- #6 largest county in Colorado, #203 largest county nationwide
#6. Weld County
--- #83 among all counties nationwide
- 2010 to 2019 percent population change: +25.7%
--- #3 among counties in Colorado, #56 among all counties nationwide
- 2019 population: 305,345
--- #9 largest county in Colorado, #229 largest county nationwide
#5. Douglas County
--- #82 among all counties nationwide
- 2010 to 2019 percent population change: +22.9%
--- #4 among counties in Colorado, #68 among all counties nationwide
- 2019 population: 336,041
--- #7 largest county in Colorado, #206 largest county nationwide
#4. Adams County
--- #60 among all counties nationwide
- 2010 to 2019 percent population change: +18.5%
--- #7 among counties in Colorado, #121 among all counties nationwide
- 2019 population: 504,108
--- #5 largest county in Colorado, #139 largest county nationwide
#3. Arapahoe County
--- #54 among all counties nationwide
- 2010 to 2019 percent population change: +16.6%
--- #10 among counties in Colorado, #158 among all counties nationwide
- 2019 population: 644,560
--- #3 largest county in Colorado, #104 largest county nationwide

#2. El Paso County
--- #45 among all counties nationwide
- 2010 to 2019 percent population change: +16.5%
--- #11 among counties in Colorado, #160 among all counties nationwide
- 2019 population: 698,974
--- #2 largest county in Colorado, #93 largest county nationwide

#1. Denver County
--- #34 among all counties nationwide
- 2010 to 2019 percent population change: +22.1%
--- #6 among counties in Colorado, #78 among all counties nationwide
- 2019 population: 705,576
--- #1 largest county in Colorado, #90 largest county nationwide



