This article, the twelfth in a 50-state series, lists the twenty largest cities in Idaho by population size and provides demographic details for each city: total population, population by age group, racial composition of the population, land area, and population density. For purposes of this article, cities are incorporated municipalities and census-designated places (CDPs).
After reading “Largest Cities in Idaho (2011),” return to this link to read “Best Places to Live in Idaho (2011).”
Similar articles for the remaining 49 states can be found at these links: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Mississippi, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, and Wyoming.
1. Largest Cities in Idaho (2011): Boise, ID
Located in southwestern Idaho, Boise is the state’s capital and largest city with an estimated population of 205,671.
Grouped by age, 22.7% of the population is under 18, 11.3% is 18 to 24, 28.7% is 25 to 44, 26.1% is 45 to 64, and 11.2% is 65 or older. The median age of the population is 35.3.
The racial composition of the city is 89.0% White, 1.5% Black or African American, 0.7% Native American, 3.2% Asian, 0.2% Pacific Islander, 2.5% from other races, and 3.0% from two or more races. The population is 7.1% Hispanic or Latino of any race.
The land area of the city is 63.8 square miles. The city’s population density is 3,224 people per square mile.
2. Largest Cities in Idaho (2011): Nampa, ID
Situated in southwestern Idaho, Nampa is the second largest city in the state with an estimated population of 81,557.
Classified by age, 32.3% of the population is under 18, 10.1% is 18 to 24, 28.6% is 25 to 44, 18.8% is 45 to 64, and 10.2% is 65 or older. The median age of the population is 30.1.
The racial complexion of the city is 82.9% White, 0.7% Black or African American, 1.2% Native American, 0.9% Asian, 0.4% Pacific Islander, 10.7% from other races, and 3.2% from two or more races. The population is 22.9% Hispanic or Latino of any race.
The land area of the city is 19.9 square miles. The city’s population density is 4,098 people per square mile.
3. Largest Cities in Idaho (2011): Meridian, ID
Located in southwestern Idaho, Meridian is the third largest city in the state with an estimated population of 75,092.
Categorized by age, 33.4% of the population is under 18, 6.4% is 18 to 24, 30.5% is 25 to 44, 20.7% is 45 to 64, and 9.0% is 65 or older. The median age of the population is 31.8.
The racial profile of the city is 92.0% White, 0.8% Black or African American, 0.5% Native American, 1.8% Asian, 0.1 Pacific Islander, 1.9% from other races, and 2.9% from two or more races. The population is 6.8% Hispanic or Latino of any race.
The land area of the city is 11.8 square miles. The city’s population density is 6,364 people per square mile.
4. Largest Cities in Idaho (2011): Idaho Falls, ID
Situated in southeastern Idaho, Idaho Falls is the fourth largest city in the state with an estimated population of 56,813.
Arranged by age, 29.3% of the population is under 18, 9.0% is 18 to 24, 26.5% is 25 to 44, 23.4% is 45 to 64, and 11.8% is 65 or older. The median age of the population is 32.2.
The racial mix of the city is 89.3% White, 0.7% Black or African American, 1.0% Native American, 1.0% Asian, 0.1% Pacific Islander, 5.6% from other races, and 2.3% from two or more races. The population is 12.9% Hispanic or Latino of any race.
The land area of the city is 17.1 square miles. The city’s population density is 3,322 people per square mile.
5. Largest Cities in Idaho (2011): Pocatello, ID
Located in southeastern Idaho, Pocatello is the fifth largest city in the state with an estimated population of 54,255.
Sorted by age, 25.8% of the population is under 18, 14.4% is 18 to 24, 27.4% is 25 to 44, 21.8% is 45 to 64, and 10.6% is 65 or older. The median age of the population is 30.2.
The racial makeup of the city is 90.5% White, 1.0% Black or African American, 1.7% Native American, 1.6% Asian, 0.2% Pacific Islander, 2.3% from other races, and 2.8% from two or more races. The population is 7.2% Hispanic or Latino of any race.
The land area of the city is 28.2 square miles. The city’s population density is 1,924 people per square mile.
6. Largest Cities in Idaho (2011): Caldwell, ID
Located in southwestern Idaho, Caldwell is the sixth largest city in the state with an estimated population of 46,237.
Grouped by age, 33.1% of the population is under 18, 11.5% is 18 to 24, 28.4% is 25 to 44, 18.2% is 45 to 64, and 8.8% is 65 or older. The median age of the population is 28.2.
The racial composition of the city is 77.5% White, 0.6% Black or African American, 1.2% Native American, 0.9% Asian, 0.1% Pacific Islander, 16.1% from other races, and 3.6% from two or more races. The population is 35.4% Hispanic or Latino of any race.
The land area of the city is 11.3 square miles. The city’s population density is 4,092 people per square mile.
7. Largest Cities in Idaho (2011): Coeur d’Alene, ID
Situated in northwestern Idaho, Coeur d’Alene is the seventh largest city in the state with an estimated population of 44,137.
Classified by age, 22.9% of the population is under 18, 11.9% is 18 to 24, 26.7% is 25 to 44, 24.0% is 45 to 64, and 14.5% is 65 or older. The median age of the population is 35.4.
The racial complexion of the city is 93.8% White, 0.4% Black or African American, 1.2% Native American, 0.8% Asian, 0.1% Pacific Islander, 0.9% from other races, and 2.8% from two or more races. The population is 4.3% Hispanic or Latino of any race.
The land area of the city is 13.1 square miles. The city’s population density is 3,369 people per square mile.
8. Largest Cities in Idaho (2011): Twin Falls, ID
Located in the central part of southern Idaho, Twin Falls is the eighth largest city in the state with an estimated population of 44,125.
Categorized by age, 27.0% of the population is under 18, 11.6% is 18 to 24, 26.5% is 25 to 44, 21.4% is 45 to 64, and 13.5% is 65 or older. The median age of the population is 31.9.
The racial profile of the city is 88.5% White, 0.7% Black or African American, 0.8% Native American, 1.8% Asian, 0.1 Pacific Islander, 5.5% from other races, and 2.6% from two or more races. The population is 13.1% Hispanic or Latino of any race.
The land area of the city is 16.0 square miles. The city’s population density is 2,758 people per square mile.
9. Largest Cities in Idaho (2011): Lewiston, ID
Situated in the central part of western Idaho, Lewiston is the ninth largest city in the state with an estimated population of 31,894.
Arranged by age, 21.5% of the population is under 18, 10.8% is 18 to 24, 23.8% is 25 to 44, 25.6% is 45 to 64, and 18.3% is 65 or older. The median age of the population is 39.9.
The racial mix of the city is 93.9% White, 0.3% Black or African American, 1.7% Native American, 0.8% Asian, 0.1% Pacific Islander, 0.7% from other races, and 2.4% from two or more races. The population is 2.8% Hispanic or Latino of any race.
The land area of the city is 16.5 square miles. The city’s population density is 1,933 people per square mile.
10. Largest Cities in Idaho (2011): Post Falls, ID
Located in northwestern Idaho, Post Falls is the tenth largest city in the state with an estimated population of 27,574.
Sorted by age, 29.0% of the population is under 18, 8.8% is 18 to 24, 28.6% is 25 to 44, 22.4% is 45 to 64, and 11.2% is 65 or older. The median age of the population is 33.0.
The racial makeup of the city is 94.0% White, 0.4% Black or African American, 0.9% Native American, 0.7% Asian, 0.1% Pacific Islander, 1.0% from other races, and 2.8% from two or more races. The population is 4.6% Hispanic or Latino of any race.
The land area of the city is 9.7 square miles. The city’s population density is 2,823 people per square mile.
11. Largest Cities in Idaho (2011): Rexburg, ID
Located in southeastern Idaho, Rexburg is the eleventh largest city in the state with an estimated population of 25,484.
A large percentage of the population is college-aged: the city is home to Brigham Young University-Idaho. Grouped by age, 20.4% of the population is under 18, 49.2% is 18 to 24, 19.6% is 25 to 44, 7.0% is 45 to 64, and 3.8% is 65 or older. The median age of the population is 22.3.
The racial composition of the city is 93.8% White, 0.6% Black or African American, 0.2% Native American, 1.2% Asian, 0.2% Pacific Islander, 2.3% from other races, and 1.7% from two or more races. The population is 5.6% Hispanic or Latino of any race.
The land area of the city is 4.9 square miles. The city’s population density is 5,201 people per square mile.
12. Largest Cities in Idaho (2011): Moscow, ID
Situated in northwestern Idaho, Moscow is the twelfth largest city in the state with an estimated population of 23,800.
A significant percentage of the population is college-aged: the city is home to the University of Idaho. Classified by age, 16.4% of the population is under 18, 35.8% is 18 to 24, 24.7% is 25 to 44, 15.6% is 45 to 64, and 7.5% is 65 or older. The median age of the population is 24.2.
The racial complexion of the city is 90.9% White, 1.1% Black or African American, 0.6% Native American, 3.1% Asian, 0.2% Pacific Islander, 1.4% from other races, and 2.7% from two or more races. The population is 4.6% Hispanic or Latino of any race.
The land area of the city is 6.2 square miles. The city’s population density is 3,839 people per square mile.
13. Largest Cities in Idaho (2011): Eagle, ID
Located in southwestern Idaho, Eagle is the thirteenth largest city in the state with an estimated population of 19,908.
Categorized by age, 30.8% of the population is under 18, 5.5% is 18 to 24, 21.3% is 25 to 44, 30.3% is 45 to 64, and 12.1% is 65 or older. The median age of the population is 40.6.
The racial profile of the city is 94.4% White, 0.3% Black or African American, 0.5% Native American, 1.6% Asian, 0.1 Pacific Islander, 1.0% from other races, and 2.0% from two or more races. The population is 4.7% Hispanic or Latino of any race.
The land area of the city is 9.2 square miles. The city’s population density is 2,164 people per square mile.
14. Largest Cities in Idaho (2011): Kuna, ID
Situated in southwestern Idaho, Kuna is the fourteenth largest city in the state with an estimated population of 15,210.
Arranged by age, 37.7% of the population is under 18, 7.5% is 18 to 24, 35.1% is 25 to 44, 15.3% is 45 to 64, and 4.4% is 65 or older. The median age of the population is 28.1.
The racial mix of the city is 91.2% White, 0.6% Black or African American, 0.8% Native American, 0.7% Asian, 0.1% Pacific Islander, 3.6% from other races, and 2.9% from two or more races. The population is 8.6% Hispanic or Latino of any race.
The land area of the city is 2.4 square miles. The city’s population density is 6,338 people per square mile.
15. Largest Cities in Idaho (2011): Mountain Home, ID
Located in southwestern Idaho, Mountain Home is the fifteenth largest city in the state with an estimated population of 14,206.
Sorted by age, 27.9% of the population is under 18, 12.4% is 18 to 24, 29.1% is 25 to 44, 20.7% is 45 to 64, and 9.9% is 65 or older. The median age of the population is 29.8.
The racial makeup of the city is 83.2% White, 3.3% Black or African American, 1.0% Native American, 2.9% Asian, 0.6% Pacific Islander, 4.8% from other races, and 4.4% from two or more races. The population is 11.9% Hispanic or Latino of any race.
The land area of the city is 5.2 square miles. The city’s population density is 2,732 people per square mile.
16. Largest Cities in Idaho (2011): Chubbuck, ID
Located in southeastern Idaho, Chubbuck is the sixteenth largest city in the state with an estimated population of 13,922.
Grouped by age, 33.5% of the population is under 18, 8.3% is 18 to 24, 27.9% is 25 to 44, 20.3% is 45 to 64, and 10.0% is 65 or older. The median age of the population is 30.2.
The racial composition of the city is 90.5% White, 0.4% Black or African American, 2.4% Native American, 1.1% Asian, 0.3% Pacific Islander, 2.3% from other races, and 3.0% from two or more races. The population is 7.5% Hispanic or Latino of any race.
The land area of the city is 3.5 square miles. The city’s population density is 3,978 people per square mile.
17. Largest Cities in Idaho (2011): Ammon, ID
Situated in southeastern Idaho, Ammon is the seventeenth largest city in the state with an estimated population of 13,816.
Classified by age, 36.3% of the population is under 18, 7.7% is 18 to 24, 27.5% is 25 to 44, 18.7% is 45 to 64, and 9.8% is 65 or older. The median age of the population is 29.6.
The racial complexion of the city is 94.1% White, 0.5% Black or African American, 0.5% Native American, 0.8% Asian, 0.1% Pacific Islander, 2.2% from other races, and 1.8% from two or more races. The population is 6.4% Hispanic or Latino of any race.
The land area of the city is 2.9 square miles. The city’s population density is 4,764 people per square mile.
18. Largest Cities in Idaho (2011): Hayden, ID
Located in northwestern Idaho, Hayden is the eighteenth largest city in the state with an estimated population of 13,294.
Categorized by age, 25.6% of the population is under 18, 7.2% is 18 to 24, 25.0% is 25 to 44, 25.1% is 45 to 64, and 17.1% is 65 or older. The median age of the population is 39.4.
The racial profile of the city is 95.1% White, 0.2% Black or African American, 0.9% Native American, 0.9% Asian, 0.1 Pacific Islander, 0.7% from other races, and 2.1% from two or more races. The population is 4.2% Hispanic or Latino of any race.
The land area of the city is 7.8 square miles. The city’s population density is 1,704 people per square mile.
19. Largest Cities in Idaho (2011): Blackfoot, ID
Situated in southeastern Idaho, Blackfoot is the nineteenth largest city in the state with an estimated population of 11,899.
Arranged by age, 31.3% of the population is under 18, 9.5% is 18 to 24, 25.5% is 25 to 44, 20.8% is 45 to 64, and 12.9% is 65 or older. The median age of the population is 30.8.
The racial mix of the city is 83.1% White, 0.3% Black or African American, 3.5% Native American, 1.1% Asian, 0.2% Pacific Islander, 9.1% from other races, and 2.8% from two or more races. The population is 18.4% Hispanic or Latino of any race.
The land area of the city is 5.4 square miles. The city’s population density is 2,204 people per square mile.
20. Largest Cities in Idaho (2011): Garden City, ID
Located in southwestern Idaho, Garden City is the twentieth largest city in the state with an estimated population of 10,972.
Sorted by age, 20.6% of the population is under 18, 9.1% is 18 to 24, 22.3% is 25 to 44, 29.2% is 45 to 64, and 18.8% is 65 or older. The median age of the population is 43.2.
The racial makeup of the city is 86.2% White, 1.0% Black or African American, 1.1% Native American, 1.4% Asian, 0.1% Pacific Islander, 7.1% from other races, and 3.1% from two or more races. The population is 13.8% Hispanic or Latino of any race.
The land area of the city is 4.2 square miles. The city’s population density is 2,612 people per square mile.
More Articles from J.C. Grant
“Average ACT Scores by State (2010)”
“Average SAT Scores by State (2010)”
“Largest U.S. Cities: Population Size (2011)”
“Most_Dangerous_Cities in America – Murder Rates”
State Education Rankings: Graduation Rates for High School, College, and Grad/Professional School
“State Education Rankings: SAT Scores”
Source(s):
“American Fact Finder,” U.S. Census Bureau
“Population, Housing Units, Area, and Density: 2000,” U.S. Census Bureau
