The 10 Fastest Growing Cities In Idaho For 2021


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

Editor’s Note: Data has been updated for 2021. This is our seventh time ranking the fastest growing cities in Idaho.

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 Boise City and Meridian, while others want peace and quiet like in Fruitland and Weiser, 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 Idaho 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 Gem State that have people climbing over each other to get in.

These are the 10 fastest growing cities in Idaho for 2021 according to the most recent census data:

The 10 Fastest Growing Cities In Idaho For 2021

  1. Star
  2. Meridian
  3. Middleton
  4. Kuna
  5. Eagle
  6. Ammon
  7. Post Falls
  8. Rathdrum
  9. Caldwell
  10. Nampa

What's the fastest growing city in Idaho for 2021? Based on the most recent ACS data, Star ranks as the fastest growing city in Idaho. If you happen to be a resident of Star, 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 Idaho are growing like weeds.

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

For more Idaho state reading:

The 10 Fastest Growing Cities In Idaho For 2021

1. Star

Overall SnackAbility

6
/10

Population: 9,115
Rank Last Year: 1 (No Change)
Population 2010: 5,173
Percent Growth 76.2%
Absolute Growth: 3,942
More on Star: Homes For Sale | Data

2. Meridian

Meridian, ID

Source: Public domain
Overall SnackAbility

9
/10

Population: 101,905
Rank Last Year: 2 (No Change)
Population 2010: 68,953
Percent Growth 47.8%
Absolute Growth: 32,952
More on Meridian: Homes For Sale | Data | Photos

3. Middleton

Middleton, ID

Overall SnackAbility

5
/10

Population: 7,556
Rank Last Year: 3 (No Change)
Population 2010: 5,203
Percent Growth 45.2%
Absolute Growth: 2,353
More on Middleton: Homes For Sale | Data | Photos

4. Kuna

Kuna, ID

Overall SnackAbility

6
/10

Population: 19,580
Rank Last Year: 4 (No Change)
Population 2010: 13,764
Percent Growth 42.3%
Absolute Growth: 5,816
More on Kuna: Homes For Sale | Data | Photos

5. Eagle

Eagle, ID

Overall SnackAbility

7
/10

Population: 26,514
Rank Last Year: 5 (No Change)
Population 2010: 18,752
Percent Growth 41.4%
Absolute Growth: 7,762
More on Eagle: Homes For Sale | Data | Photos

6. Ammon

Ammon, ID

Overall SnackAbility

7
/10

Population: 15,859
Rank Last Year: 6 (No Change)
Population 2010: 12,443
Percent Growth 27.5%
Absolute Growth: 3,416
More on Ammon: Homes For Sale | Data | Photos

7. Post Falls

Post Falls, ID

Overall SnackAbility

8
/10

Population: 33,225
Rank Last Year: 7 (No Change)
Population 2010: 26,179
Percent Growth 26.9%
Absolute Growth: 7,046
More on Post Falls: Homes For Sale | Data | Photos

8. Rathdrum

Rathdrum, ID

Overall SnackAbility

8
/10

Population: 8,284
Rank Last Year: 9 (Up 1)
Population 2010: 6,545
Percent Growth 26.6%
Absolute Growth: 1,739
More on Rathdrum: Homes For Sale | Data | Photos

9. Caldwell

Caldwell, ID

Source: Public domain
Overall SnackAbility

5
/10

Population: 54,887
Rank Last Year: 8 (Down 1)
Population 2010: 43,749
Percent Growth 25.5%
Absolute Growth: 11,138
More on Caldwell: Homes For Sale | Data | Photos

10. Nampa

Nampa, ID

Source: Public domain
Overall SnackAbility

6
/10

Population: 93,952
Rank Last Year: 10 (No Change)
Population 2010: 78,322
Percent Growth 20.0%
Absolute Growth: 15,630
More on Nampa: Homes For Sale | Data | Photos

How We Measured The Fastest Growing Cities In the Gem State for 2021

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 33 Idaho 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 Gem 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 Idaho with the largest percent increase in population:
Fastest Growing Cities in Idaho Graph For 2021

Click to enlarge

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

So there you have it, the fastest growing cities in Idaho are led by Star 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. Weiser
  2. Payette
  3. Lewiston

For more Idaho reading, check out:

Detailed List Of Fastest Growing Places In Idaho For 2021

Rank City Growth Population Population 2010
1 Star 76.2% 9,115 5,173
2 Meridian 47.8% 101,905 68,953
3 Middleton 45.2% 7,556 5,203
4 Kuna 42.3% 19,580 13,764
5 Eagle 41.4% 26,514 18,752
6 Ammon 27.5% 15,859 12,443
7 Post Falls 26.9% 33,225 26,179
8 Rathdrum 26.6% 8,284 6,545
9 Caldwell 25.5% 54,887 43,749
10 Nampa 20.0% 93,952 78,322

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.