The Greeley Metropolitan Statistical Area (MSA) was the fastest-growing metro area in one of the nation's fastest-growing states over the last decade, according to 2020 data released this year by the U.S. Census Bureau.
We grew by more than 30% between 2010 and 2020, adding 76,186 residents, bringing our population to 328,981.
Our MSA, anchored by Greeley and including the rest of Weld County, was the fastest-growing in Colorado and the 4th fastest in the entire country, behind The Villages MSA, Austin MSA and St. George MSA.
Top 5 Fastest-Growing Colorado Counties
| Rank | County | Percent | 2020 Population |
| 1 | Weld | 30.12% | 328,981 |
| 2 | Douglas | 25.40% | 357,978 |
| 3 | Larimer | 19.84% | 359,066 |
| 4 | Denver | 19.22% | 715,522 |
| 5 | Adams | 17.66% | 519,572 |
Within Colorado, the City of Greeley was the fifth fastest-growing among large cities (over 100,000) at over 17% during the past 10 years.
Top 5 Fastest-Growing Colorado Cities
| Rank | City
| Percent | 2020 Population | 2010 Population |
| 1 | Thornton | 19.44% | 141,867 | 118,722 |
| 2 | Denver | 19.22% | 715,522 | 600,158 |
| 3 | Aurora | 18.82% | 386,261 | 325,078 |
| 4 | Fort Collins | 17.94% | 169,810 | 143,986 |
| 5 | Greeley | 17.12% | 108,795 | 92,889 |
Colorado was the 6th fastest-growing state in the country, growing by nearly 15% during the past 10 years. The population of the state reached over 5.77
million last year. The top 10 states were all located in the South and West census regions.
Top10 Fastest-Growing States
| Rank | State | Percent | 2020 Population |
| 1 | Utah | 18.37% | 3,271,616 |
| 2 | Idaho | 17.32% | 1,839,106 |
| 3 | Texas | 15.91% | 29,145,505 |
| 4 | North Dakota | 15.83% | 779,094 |
| 5 | Nevada | 14.96% | 3,104,614 |
| 6 | Colorado | 14.80% | 5,773,714 |
| 7 | Washington | 14.58% | 7,705,281 |
| 8 | Florida | 14.56% | 21,538,187 |
| 9 | Arizona | 11.88% | 7,151,502 |
| 10 | South Carolina | 10.66% | 5,118,425 |
Nationally, the South was the fastest-growing region in the United States, with a 10.2% increase in population over the last decade.
The Western region grew by 9.2%, the Northeast by 4.1%, and the Midwest by 3.1%.