The 5 Largest Cities in Idaho in 2024

Written by Chanel Coetzee
Updated: November 1, 2023
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These are the five largest cities in Idaho!

Located in the northwestern part of the United States, Idaho is famous for its vast areas of protected wilderness, mountainous landscapes, and outdoor recreation areas. Idaho’s population in 2022 was approximately 1,939,033, making it one of the least populated states in the United States. However, 2022 also saw an influx of people moving to the Gem State.

In fact, it was the second-fastest growing state that year, with an increase of 1.8%. Florida was the only state with a faster growth rate of 1.9%. Below is an article about the largest cities in Idaho by population, total area, and economic impact and why they are so popular.

Largest Cities in Idaho by Population

RankingCityPopulation Size
1.Boise236,634
2.Meridian129,736
3.Nampa110,951
4.Idaho Falls67,723
5.Caldwell65,920

1. Boise

Boise is the most populated city in Idaho. In 2022, there was an estimated population of 236,634 and a population density of 2,860 per square mile. This large city was founded in 1863 and incorporated in 1864. Today, Boise has a bustling downtown with many bars, local restaurants, and boutiques. Furthermore, some notable attractions in the city include the Boise Art Museum, Idaho State Capitol, Boise Zoo, and the Egyptian Theatre.

Panoramic view of Autumn colors and the skyline of the City of Trees Boise Idaho

Boise is the most populated city in Idaho. In 2022, there was an estimated population of 236,634 and a population density of 2,860 per square mile.

©Charles Knowles/Shutterstock.com

2. Meridian

Meridian is located in Ada County, and its population was 129,736 in 2022, with a population density of 2,802.8 people per square mile. As a result, it is the second-largest city in Idaho. Furthermore, it is considered the state’s fastest-growing city. There is also plenty to do in this city, like visiting the many shopping plazas and theme parks and experiencing the growing culinary scene.

Little town of Meridian Idaho with car race track and water tower

Meridian is located in Ada County, and its population was 129,736 in 2022, with a population density of 2,802.8 people per square mile.


Image: Charles Knowles, Shutterstock

©Charles Knowles/Shutterstock.com

3. Nampa

Nampa is the third largest city in Idaho, with a population of 110,951 in 2022 and a total population density of 2,992.7 inhabitants per square mile. This city derived its name from a Shoshoni word meaning footprint or moccasin. Nampa was first established in 1861 but only incorporated in 1886. This city is famous for the Northwest Nazarene University, the College of Idaho, agribusiness, and successful food processing and manufacturing companies. However, its retail and restaurant industries are growing rapidly. Nampa is also known for its annual Snake River Stampede Rodeo, which has been a staple in this city’s culture for over 100 years.

Nampa Idaho

Nampa, the third largest city in Idaho by population, has a classic depot.

©Charles Knowles/Shutterstock.com

4. Idaho Falls

Idaho Falls had an estimated population of 67,723 in 2022, with a population density of 3,919 inhabitants per square mile. This quaint city serves as a cultural, commercial, and healthcare hub for eastern Idaho and some southern Montana and western Wyoming areas. Furthermore, Idaho Falls is home to the Museum of Idaho, College of Eastern Idaho, and the Idaho Falls Chukars minor league baseball team.

Idaho Falls at the blue hour time

Idaho Falls had an estimated population of 67,723 in 2022, with a population density of 3,919 inhabitants per square mile.


Image: Luis Boucault, Shutterstock

©Luis Boucault/Shutterstock.com

5. Caldwell

Caldwell is one of the largest cities in Idaho, with a population size of 65,920 in 2022 and a population density of 3,114 individuals per square mile. This city is home to the College of Idaho. Furthermore, it is known for its agricultural sector and diverse business community.

The river flows through a park in downtown Caldwell.

Caldwell is one of the largest cities in Idaho, with a population size of 65,920 in 2022 and a population density of 3,114 individuals per square mile.


Image: gener200, Shutterstock

©gener200/Shutterstock.com

Largest Cities in Idaho by Total Area

RankingCityTotal Area
1.Boise79.36 square miles
2.Fort Hall35.06 square miles
3.Argon Valley34.03 square miles
4.Pocatello32.22 square miles
5.Nampa31.19 square miles

1. Boise

Boise sits in a wide river valley at the base of the Rocky Mountains. It is the largest city in Idaho, covering an area of 79.36 square miles. The Boise River runs through the city’s center, merging with the Snake River approximately 40 miles north. The city’s climate is tempered throughout the year due to air from the Pacific Ocean. Summers in Boise are dry, with warm periods that only last a few days. Winter is the city’s rainy season, and cold spells are common. However, fall is the best time to visit Boise because the weather is ideal. The city’s natural attractions include:

Panoramic view of Autumn colors and the skyline of the City of Trees Boise Idaho

Boise sits in a wide river valley at the base of the Rocky Mountains. It is the largest city in Idaho, covering an area of 79.36 square miles.

©Charles Knowles/Shutterstock.com

2. Fort Hall

Fort Hall was founded in 1834 by Nathaniel Jarvis Wyeth as a fur trading post. The city has a total area of 35.06 square miles. It sits on the Snake River in southeastern Idaho. The summers in Fort Hall are hot, dry, and sunny. However, the winters are cold, snowy, and cloudy.

Fort Hall Replica

The summers in Fort Hall are hot, dry, and sunny. However, the winters are cold, snowy, and cloudy.

©Jeffrey G. Backes / CC BY-SA 3.0 – License

3. Arbon Valley

Arbon Valley is the third largest city in Idaho based on total area, spanning over 34.05 miles. While it has ample space, the community is small, with just over 500 residents. Lush green forests and rugged mountain terrain surround the quaint town. The summers are warm and dry, with some days reaching the high 90s. Winters are mild with moderate rainfall. The best time to visit is spring and fall when the weather is mild and comfortable.

Arbon Valley Idaho

Arbon Valley is the third largest city in Idaho based on total area, spanning over 34.05 miles. While it has ample space, the community is small, with just over 500 residents.


Image: HES Photography, Shutterstock

©HES Photography/Shutterstock.com

4. Pocatello

Pocatello spans over 32.22 square miles, making it the fourth-largest city in Idaho based on total area. It is located along the southeastern edge of the Snake River plain at the mouth of Portneuf Canyon. The city is surrounded by mountainous terrain, perfect for hiking. Pocatello has a mild climate. Summers are hot and dry, and winters get cold and snowy. The city also has natural attractions, like Edson Fichter Pond and Cherry Springs Nature Area.

Pocatello Idaho LDS Mormon Latter Day Saint Temple at sunset with glowing lights and trees

Pocatello spans over 32.22 square miles, making it the fourth-largest city in Idaho based on total area. It is located along the southeastern edge of the Snake River plain at the mouth of Portneuf Canyon.


Image: Lane V. Erickson, Shutterstock

©Lane V. Erickson/Shutterstock.com

5. Nampa

Nampa covers 31.19 square miles and is surrounded by farms producing fruits, vegetables, grains, and dairy products. It has a semi-arid climate, where summers are usually hot and dry, and winters are mild but have sporadic cold spells, sometimes dropping below freezing. Natural attractions include Deer Flat National Wildlife Refuge and Lake Lowell.

Residential Area with Empty Land in Nampa, Idaho

Nampa covers 31.19 square miles and is surrounded by farms producing fruits, vegetables, grains, and dairy products.


Image: Ninzie, Shutterstock

©Ninzie/Shutterstock.com

Largest Cities in Idaho by Economic Impact

RankCityMedian Household Income
1.Eagle$148,399.00
2.Sun Valley$138,908.00
3.Hayden Lake$111,684.00
4.Meridian$109,014.00
5.Ketchum$107,503.00

The photo featured at the top of this post is © Charles Knowles/Shutterstock.com


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About the Author

Chanel Coetzee is a writer at A-Z Animals, primarily focusing on big cats, dogs, and travel. Chanel has been writing and researching about animals for over 10 years. She has also worked closely with big cats like lions, cheetahs, leopards, and tigers at a rescue and rehabilitation center in South Africa since 2009. As a resident of Cape Town, South Africa, Chanel enjoys beach walks with her Stafford bull terrier and traveling off the beaten path.

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