Fastest Growing Cities In Colorado For 2020

We used data and science to determine the places in Colorado everyone wants to move to today.

Editor’s Note: Data has been updated for 2020. This is our sixth time ranking the fastest growing cities in Colorado.

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Is being in an area that's growing quickly a good thing or a bad thing?

Depends on who you ask. Some want bigger, more exciting cities like Denver and Colorado Springs, while others want peace and quiet like in Eaton and Glendale, thank you very much.

But today we're going to put opinions aside and just look at the cold hard facts -- over the past five years, which cities in Colorado have the grown the fastest.

After getting knee deep in the Census's American Community Survey, we emerged with this set of cities in the Centennial State that have people climbing over each other to get in.

These are the 10 fastest growing cities in Colorado for 2020 according to the most recent census data:

The 10 Fastest Growing Cities In Colorado For 2020

  1. John
  2. Frederick (Photos)
  3. Wellington (Photos)
  4. Firestone (Photos)
  5. Windsor (Photos)
  6. Monument (Photos)
  7. Lone Tree (Photos)
  8. Erie (Photos)
  9. Lochbuie (Photos)
  10. Castle Rock (Photos)

What's the fastest growing city in Colorado for 2020? Based on the most recent ACS data, John ranks as the fastest growing city in Colorado. If you happen to be a resident of John, you're probably not too surprised to find it on our list.

If you're surprised--and you're wondering why these places are kind of a big deal--keep reading. We'll tell you what makes each of these 10 places in Colorado are growing like weeds.

And if you already knew these places were happening, check out the best places to live in Colorado or the Fastest Growing States In America.

For more Colorado state reading:

The 10 Fastest Growing Cities In Colorado For 2020

Source: Public Domain
Overall SnackAbility


Population: 14,278
Rank Last Year: 1 (No Change)
Population 2010: 8,656
Percent Growth 64.9%
Absolute Growth: 5,622
More on John: Homes For Sale | Data

Frederick, CO

Overall SnackAbility


Population: 12,138
Rank Last Year: 2 (No Change)
Population 2010: 7,710
Percent Growth 57.4%
Absolute Growth: 4,428
More on Frederick: Homes For Sale | Data | Photos

The Town of Frederick is a Statutory Town in Weld County, Colorado, United States. The population was 8679 at the 2010 census.

Wellington, CO

Overall SnackAbility


Population: 8,571
Rank Last Year: 3 (No Change)
Population 2010: 5,648
Percent Growth 51.8%
Absolute Growth: 2,923
More on Wellington: Homes For Sale | Data | Photos

Wellington is a Statutory Town in Larimer County, Colorado, United States. The population was 6,289 at the 2010 census.

Firestone, CO

Overall SnackAbility


Population: 13,109
Rank Last Year: 5 (Up 1)
Population 2010: 8,866
Percent Growth 47.9%
Absolute Growth: 4,243
More on Firestone: Homes For Sale | Data | Photos

The Town of Firestone is a Statutory Town in Weld County, Colorado, United States. The population was 10,147 at the 2010 census.

Windsor, CO

Overall SnackAbility


Population: 25,232
Rank Last Year: 8 (Up 3)
Population 2010: 17,306
Percent Growth 45.8%
Absolute Growth: 7,926
More on Windsor: Homes For Sale | Data | Photos

The Town of Windsor is a Home Rule Municipality in Larimer and Weld counties in the U.S. state of Colorado. According to June 2016 estimates, the population of the town was 24,500. Windsor is located in the region known as Northern Colorado. Windsor is situated 59 miles north of the Colorado State Capitol in Denver.

Monument, CO

Overall SnackAbility


Population: 7,065
Rank Last Year: 4 (Down 2)
Population 2010: 4,869
Percent Growth 45.1%
Absolute Growth: 2,196
More on Monument: Homes For Sale | Data | Photos

The Town of Monument is a statutory town situated at the base of the Rampart Range in El Paso County, Colorado, United States. Monument is bordered by Pike National Forest on the west, Colorado Springs and the United States Air Force Academy to the south, foothills and rock outcroppings to the north, and rolling plains to the east. Monument was first settled as a stop along the Rio Grande Railroad in 1872, and the area was incorporated as a town called Henry's Station in 1879, but the name was later changed to Monument. The town population was 5,530 at the 2010 United States Census, an increase of 181% from the population of 1,971 in 2000.

Lone Tree, CO

Overall SnackAbility


Population: 14,209
Rank Last Year: 7 (No Change)
Population 2010: 9,890
Percent Growth 43.7%
Absolute Growth: 4,319
More on Lone Tree: Homes For Sale | Data | Photos

Erie, CO

Overall SnackAbility


Population: 22,965
Rank Last Year: 6 (Down 2)
Population 2010: 16,134
Percent Growth 42.3%
Absolute Growth: 6,831
More on Erie: Homes For Sale | Data | Photos

The Town of Erie is a Statutory Town in Boulder and Weld counties in the U.S. state of Colorado. The population as of the 2010 census was 18,135, up from 6,291 at the 2000 census. Erie is located just west of Interstate 25, with easy access to Interstate 70, Denver International Airport and Colorado's entire Front Range. Erie's Planning Area spans 48 square miles, extending from the north side of State Highway 52 south to State Highway 7, and between US 287 on the west and Interstate 25 to the east. Erie is approximately 35 minutes from Denver International Airport, 25 minutes from Denver and 20 minutes from Boulder.

The town was named after Erie, Pennsylvania, the former home of an early settler, Richard Van Valkenburg.

Lochbuie, CO

Overall SnackAbility


Population: 6,036
Rank Last Year: 9 (No Change)
Population 2010: 4,306
Percent Growth 40.2%
Absolute Growth: 1,730
More on Lochbuie: Homes For Sale | Data | Photos

The Town of Lochbuie is a Statutory Town located in Weld and Adams counties in the U.S. state of Colorado. The town population was 4726 at the 2010 United States Census.

Castle Rock, CO

Overall SnackAbility


Population: 59,680
Rank Last Year: 10 (No Change)
Population 2010: 44,402
Percent Growth 34.4%
Absolute Growth: 15,278
More on Castle Rock: Homes For Sale | Data | Photos

Castle Rock is an affluent home rule municipality that is the county seat of Douglas County, Colorado, United States. The most populous municipality of the county, the community's population was 48,231 at the 2010 United States Census, with an estimated population of 55,747 as of 2014. It is named for the prominent, castle tower-shaped butte near the center of town. Located midway between Denver and Colorado Springs, Castle Rock is part of the Denver Metropolitan Area and the Front Range Urban Corridor.

How We Measured The Fastest Growing Cities In the Centennial State for 2020

To figure out which cities are growing the most, we simply had to look at the growth rates for cities sine 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 2018)

We ranked all 78 Colorado cities with a population over 5,000 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 Centennial 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]

Here's a graph of the cities in Colorado with the largest percent increase in population:
Fastest Growing Cities in Colorado Graph For 2020

Click to enlarge

These Places Grew Up So Fast In Colorado, You Know?

So there you have it, the fastest growing cities in Colorado are led by John which has been growing at a blistering pace this decade relative to other cities and towns around the state.

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):

  1. Trinidad
  2. Craig
  3. Sterling

For more Colorado reading, check out:

Detailed List Of Fastest Growing Places In Colorado For 2020

Rank City Growth Population Population 2010
1 John 64.9% 14,278 8,656
2 Frederick 57.4% 12,138 7,710
3 Wellington 51.8% 8,571 5,648
4 Firestone 47.9% 13,109 8,866
5 Windsor 45.8% 25,232 17,306
6 Monument 45.1% 7,065 4,869
7 Lone Tree 43.7% 14,209 9,890
8 Erie 42.3% 22,965 16,134
9 Lochbuie 40.2% 6,036 4,306
10 Castle Rock 34.4% 59,680 44,402

How Is The Area In ?

About Chris Kolmar

Chris Kolmar has been in the real estate business for almost ten years now. He originally worked for Movoto Real Estate as the director of marketing before founding HomeSnacks.

He believes the key to finding the right place to live comes down to looking at the data, reading about things to do, and, most importantly, checking it out yourself before you move.

If you've been looking for a place to live in the past several years, you've probably stumbled upon his writing already.

You can find out more about him on LinkedIn or his website.