Idaho's Fastest Growing Cities Join Top 50 Nationwide

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Idaho experienced a statewide population increase of 1.4% in 2025, bringing the total population close to 2.03 million. The growth was heavily concentrated in urban areas, with more than 75% of the state's 28,861 new residents settling in the three largest counties: Ada, Canyon, and Kootenai. The Boise Metropolitan Statistical Area, which encompasses Ada, Canyon, Boise, Gem, and Owyhee counties, was a primary driver of the state's expansion.

Why it matters

Idaho's rapid population growth, particularly in its urban centers, is reshaping the state's demographics and economy. This influx of new residents is putting pressure on housing, infrastructure, and public services, while also creating opportunities for businesses and industries to expand.

The details

According to U.S. Census Bureau data, Idaho's growth rate ranks it second in the nation, trailing only South Carolina. The Boise Metropolitan Statistical Area grew by 2.2%, making it the 13th fastest growing market in the United States and the second fastest in the West. In addition to Boise, the metropolitan statistical areas of Coeur d'Alene and Idaho Falls have both entered the top 50 of the fastest growing cities nationwide. Canyon County saw a growth rate of 2.9%, more than double the statewide average, while Ada County remains the largest in the state with nearly 550,000 residents.

• Idaho experienced a statewide population increase of 1.4% in 2025.
• The Boise Metropolitan Statistical Area grew by 2.2% in 2025.