Birthrates in the United States have reached a historic low, with women having an average of 1.6 children in their lifetime. However, while some states have seen significant reductions in population growth, others are seeing their populations boom.
Since 2020, one of the fastest growing states in the U.S. has been Idaho, increasing by 6.2 percent between 2020 and 2023, according to data from the U.S. Census Bureau. This represents a rise from 1,849,339 in July 2020 to 1,964,726 in July 2023. However, this growth has not been even across the state.
The map below shows which Idaho counties are growing the fastest:
The fastest population growth was seen in Camas County, with a 14 percent increase between 2020 and 2023. This was followed by Boundary County at 12 percent. Tied for third place was Adams County, Boise County, Bonner County, and Canyon County, with an 11 percent growth rate.
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So, what might be driving these increases?
According to researchers at the University of Idaho, more than a quarter of the state’s growing population are new to the state. By analyzing vehicle registration and license surrender data from the Idaho Transportation Department between 2011 and 2021, the team found that nearly half a million Idaho residents had moved to the state in the last decade.
“We’re not in the middle of nowhere anymore,” Jaap Vos, a professor in the College of Natural Resources at the University of Idaho who focuses on planning, said in a statement on the university’s website in 2022. “We’re actually in the middle of all the action. If you look at the numbers, you can see we are getting new people coming in constantly.”
Map shows Idaho counties with the fastest growing population. Map shows Idaho counties with the fastest growing population. rarrarorro / iStock / Getty Images Plus/Getty
According to the Idaho Department of Labor in March 2023, net migration into the state accounted for 88 percent of Idaho’s population growth between 2021 and 2022, the majority of which were U.S. citizens moving in from other states. The remaining 12 percent was from natural change when birth rates overweigh deaths.
While Idaho is seeing this influx of new people, many longstanding Idaho residents have been increasingly moving elsewhere, resulting in a significant reshaping of Idaho’s demographics.
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According to a January interview with Matthew Hurt, an economist at the Idaho Division of Financial Management, with the Idaho Statesman, two thirds of Idaho’s predicted revenue growth through the 2028 fiscal year will be added through migration, with as many as one third of migration in Southwest Idaho coming from California.
For every Idaho family that moves to California, Idaho gets three back, Hurt added.
“California totally dominates the net migration story, and it really is because Californians come to Idaho,” he said. “Idahoans don’t really go to California.”
Do you have a tip on a science story that Newsweek should be covering? Do you have a question about the U.S. population? Let us know via science@newsweek.com.
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The rotunda as seen on March 16, 2026, at the Idaho State Capitol Building in Boise. (Photo by Pat Sutphin for the Idaho Capital Sun)
Ahead of the 2026 primary elections, the League of Women Voters of Idaho is teaming up with several local groups to hold candidate forums and voter education events in the hopes of boosting voter turnout.
The groups invited all candidates for public office in Ada and Canyon County’s commissions, and inlegislative district 11, which is in Canyon County.
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The groups that are hosting include Mormon Women for Ethical Government, the Caldwell Chamber of Commerce, the American Association of University Women’s Boise branch and the College of Idaho’s Masters of Applied Public Policy Program.
Here’s when and where the forums are:
Ada County Commissioner District 2:7-8:30 p.m. April 24 at Meridian City Hall, located at 33 E. Broadway Ave. in Meridian.
Ada County Commissioner District 1:7-8:30 p.m. April 28 at Valley View Elementary School, located at 3555 N Milwaukee St. in Boise.
Legislative District 11:6:30-8:30 p.m. April 30 at Caldwell City Hall, located at 205 S. 6th Ave. in Caldwell.
Canyon County Commissioner:6-8 p.m. May 7 at Caldwell City Hall, 205 S. 6th Ave. in Caldwell.
Learn more about candidates at the League of Women Voters’ online voter guide,VOTE411.ORG.
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BOISE (Idaho Statesman) — Idaho drivers wanting to celebrate America’s anniversary this year now have a unique way to do that. The Idaho Division of Motor Vehicles has released an America 250 license plate to mark the occasion.
The new license plate includes an American flag on a blue background with the words “America 250” and the dates “1776 – 2026.”
The plate requires an extra fee that will go toward supporting the Idaho Heritage Trust, according to an Idaho Transportation Department news release. The specific fee wasn’t listed.
“This plate gives Idahoans a chance to mark a historic milestone and show their pride on the road,” said Lisa McClellan, DMV administrator, in a statement. “We’re proud to offer a design that honors our country’s past while supporting Idaho’s efforts to preserve its own history.”
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The America 250 license plate was released to celebrate a historic national milestone. | Idaho Transportation Department
Idaho’s favorite license plate
The new license plate may give Idaho’s favorite a run for its money.
The Idaho Transportation Department recently held a “Battle of the Plates” vote to find out which license plate Idahoans loved best.
The Forests Forever plate was crowned the champion on April 7. Funds generated from this plate go toward Idaho replanting and reforestation projects, as well as environmental education programs for Idaho students and teachers.
“One of Idaho’s newest plates, Forests Forever made a strong run and came out on top, highlighting just how much Idahoans value our forests and natural resources,” the transportation department said in a social media post.
Idahoans chose Forests Forever as their favorite specialty license plate. | Idaho Transportation Department
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