Is being in an area of Wyoming that’s growing quickly a good thing or a bad thing?
Depends on who you ask.
Some want bigger, more exciting cities like Cheyenne and Casper, while others want peace and quiet like in Torrington and Douglas, thank you very much.
But today, we’re going to put opinions aside and look at the cold, hard facts — since 2010, which cities in Wyoming have grown the fastest.
After getting knee-deep in the Census’s American Community Survey using Saturday Night Science, we emerged with this set of cities in the Equality State that have people climbing over each other to get in.
Table Of Contents: Top Ten | Methodology | Summary | Table
What’s the fastest growing city in Wyoming for 2026? Based on the most recent ACS data, Gillette ranks as the fastest-growing city in Wyoming. If you happen to be a resident of Gillette, you’re probably not surprised to find it on our list.
If you’re surprised — and you’re wondering why these places are a big deal — keep reading. We’ll tell you what makes each of these 10 places in Wyoming grow like weeds.
For more Wyoming state reading:
- Best Places To Live In The United States
- Fastest Growing States In The United States
- Best Places To Live In Wyoming
- Cheapest Places To Live In Wyoming
- Most Dangerous Cities In Wyoming
The 10 Fastest Growing Cities In Wyoming For 2026
1. Gillette
/10
Population: 33,431
Population 2010: 27,141
Percent Growth 23.2%
Absolute Growth: 6,290
More on Gillette: Data | Crime | Cost Of Living | Movers
2. Jackson
/10
Population: 10,756
Population 2010: 9,441
Percent Growth 13.9%
Absolute Growth: 1,315
More on Jackson: Data | Cost Of Living | Movers
3. Sheridan
/10
Population: 19,285
Population 2010: 17,007
Percent Growth 13.4%
Absolute Growth: 2,278
More on Sheridan: Data | Crime | Cost Of Living | Movers
4. Cheyenne
/10
Population: 65,239
Population 2010: 57,935
Percent Growth 12.6%
Absolute Growth: 7,304
More on Cheyenne: Data | Crime | Cost Of Living | Movers
5. Cody
/10
Population: 10,276
Population 2010: 9,358
Percent Growth 9.8%
Absolute Growth: 918
More on Cody: Data | Crime | Cost Of Living | Movers
6. Casper
/10
Population: 58,839
Population 2010: 54,139
Percent Growth 8.7%
Absolute Growth: 4,700
More on Casper: Data | Crime | Cost Of Living | Movers
7. Laramie
/10
Population: 32,234
Population 2010: 29,671
Percent Growth 8.6%
Absolute Growth: 2,563
More on Laramie: Data | Crime | Cost Of Living | Movers
8. Douglas
/10
Population: 6,420
Population 2010: 5,932
Percent Growth 8.2%
Absolute Growth: 488
More on Douglas: Data | Crime | Cost Of Living | Movers
9. Powell
/10
Population: 6,503
Population 2010: 6,125
Percent Growth 6.2%
Absolute Growth: 378
More on Powell: Data | Crime | Cost Of Living | Movers
10. Riverton
/10
Population: 10,856
Population 2010: 10,246
Percent Growth 6.0%
Absolute Growth: 610
More on Riverton: Data | Crime | Cost Of Living | Movers
Methodology: How We Measured The Fastest Growing Cities In the Equality State for 2026
To figure out which cities are growing the most, we used Saturday Night Science to look at the growth rates for cities since the beginning of the decade, according to the American Community Survey put out by the census every year. Specifically:
- Current Population
- Population in 2010
- Growth rate from 2010 to Current (The latest available data which came out in Dec 2024)
We ranked all 16 Wyoming cities with a population over 6,000 people from highest growth rate to lowest.
The city with the highest growth rate during this time was crowned the fastest-growing city in the Equality State.
And for those of you who are a little rusty with their statistics, you can calculate the growth rate by the following formula:
[Current Population – Population 2010] / [Population 2010]
The data has been updated for 2026. This report is our eleventh time ranking the fastest growing cities in Wyoming.
Here’s a graph of the cities in Wyoming with the most significant percent increase in population:
Summary: These Places Grew Up So Fast In Wyoming, You Know?
So there you have it, the fastest growing cities in Wyoming are led by Gillette which has been growing at a blistering pace this decade relative to other cities and towns around the state.
The fastest-growing cities in Wyoming are Gillette, Jackson, Sheridan, Cheyenne, Cody, Casper, Laramie, Douglas, Powell, and Riverton.
It’ll be interesting to see if these places can keep growing at the same rate over the next couple of years. We’ll be here to let you know!
These places have been growing (or shrinking) the slowest (fastest):
- Rawlins
- Green River
- Evanston
For more Wyoming reading, check out:
Fastest Growing Places In Wyoming For 2026
| Rank | City | Population | Population 2010 | Growth | Absolute Growth |
|---|---|---|---|---|---|
| 1 | Gillette | 33,431 | 27,141 | 23.2% | 6,290 |
| 2 | Jackson | 10,756 | 9,441 | 13.9% | 1,315 |
| 3 | Sheridan | 19,285 | 17,007 | 13.4% | 2,278 |
| 4 | Cheyenne | 65,239 | 57,935 | 12.6% | 7,304 |
| 5 | Cody | 10,276 | 9,358 | 9.8% | 918 |
| 6 | Casper | 58,839 | 54,139 | 8.7% | 4,700 |
| 7 | Laramie | 32,234 | 29,671 | 8.6% | 2,563 |
| 8 | Douglas | 6,420 | 5,932 | 8.2% | 488 |
| 9 | Powell | 6,503 | 6,125 | 6.2% | 378 |
| 10 | Riverton | 10,856 | 10,246 | 6.0% | 610 |