Youngest States

The median age of people in each of the states tells us that 50% of the population of that state is younger than that number, and 50% is older than that number. The lowest the median is, the youngest the population will be. In the United States, the median age within each state ranges from 31.1 years old – 43 years old. 

It has often been said that young people drive innovation, so a prevalence of young people marked by a lower median age in a state might be a marker for that area’s present and future growth. Young people have families, for instance, in contrast to older people who have already had families of their own. 

As time progresses, it is likely that the median age of all of the states will continue to increase in the coming years, as less and less people are having children, and those who do tend to have them later than previous generations did. What that means, practically, is that as time goes by, U.S. demographics will gradually change to an increasingly older average population. 

Scroll the data in the charts to learn more about the youngest states in the country.

Population Under 18 Years Old by State

Alabama

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POPULATION UNDER 18 YEARS OLDhelp

22.2%

#16 in the US

MEDIAN AGEhelp

39

#18 in the US

POPULATION AGE 65+help

17.8%

#18 in the US

Alaska

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POPULATION UNDER 18 YEARS OLDhelp

24.5%

#3 in the US

MEDIAN AGEhelp

35

#47 in the US

POPULATION AGE 65+help

13.1%

#48 in the US

Arizona

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POPULATION UNDER 18 YEARS OLDhelp

22.2%

#17 in the US

MEDIAN AGEhelp

38

#26 in the US

POPULATION AGE 65+help

18.5%

#10 in the US

Arkansas

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POPULATION UNDER 18 YEARS OLDhelp

23.3%

#8 in the US

MEDIAN AGEhelp

38

#27 in the US

POPULATION AGE 65+help

17.7%

#19 in the US

California

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POPULATION UNDER 18 YEARS OLDhelp

22.4%

#18 in the US

MEDIAN AGEhelp

37

#38 in the US

POPULATION AGE 65+help

15.2%

#45 in the US

Colorado

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POPULATION UNDER 18 YEARS OLDhelp

21.4%

#29 in the US

MEDIAN AGEhelp

37

#39 in the US

POPULATION AGE 65+help

15.1%

#46 in the US

Connecticut

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POPULATION UNDER 18 YEARS OLDhelp

20.2%

#39 in the US

MEDIAN AGEhelp

41

#6 in the US

POPULATION AGE 65+help

18.2%

#11 in the US

Delaware

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POPULATION UNDER 18 YEARS OLDhelp

20.8%

#40 in the US

MEDIAN AGEhelp

41

#7 in the US

POPULATION AGE 65+help

20%

#3 in the US

District of Columbia

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POPULATION UNDER 18 YEARS OLDhelp

18.8%

#48 in the US

MEDIAN AGEhelp

34

#49 in the US

Florida

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POPULATION UNDER 18 YEARS OLDhelp

19.7%

#45 in the US

MEDIAN AGEhelp

42

#5 in the US

POPULATION AGE 65+help

21.3%

#1 in the US

Georgia

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POPULATION UNDER 18 YEARS OLDhelp

23.4%

#9 in the US

MEDIAN AGEhelp

37

#40 in the US

POPULATION AGE 65+help

14.7%

#47 in the US

Hawaii

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POPULATION UNDER 18 YEARS OLDhelp

21.1%

#30 in the US

MEDIAN AGEhelp

39

#19 in the US

POPULATION AGE 65+help

19.6%

#6 in the US

Idaho

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POPULATION UNDER 18 YEARS OLDhelp

24.7%

#4 in the US

MEDIAN AGEhelp

37

#41 in the US

POPULATION AGE 65+help

16.7%

#31 in the US

Illinois

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POPULATION UNDER 18 YEARS OLDhelp

22.1%

#19 in the US

MEDIAN AGEhelp

38

#28 in the US

POPULATION AGE 65+help

16.6%

#32 in the US

Indiana

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POPULATION UNDER 18 YEARS OLDhelp

23.3%

#10 in the US

MEDIAN AGEhelp

38

#29 in the US

POPULATION AGE 65+help

16.5%

#33 in the US

Iowa

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POPULATION UNDER 18 YEARS OLDhelp

23.1%

#11 in the US

MEDIAN AGEhelp

38

#30 in the US

POPULATION AGE 65+help

17.9%

#20 in the US

Kansas

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POPULATION UNDER 18 YEARS OLDhelp

23.9%

#12 in the US

MEDIAN AGEhelp

37

#42 in the US

POPULATION AGE 65+help

16.8%

#34 in the US

Kentucky

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POPULATION UNDER 18 YEARS OLDhelp

22.5%

#20 in the US

MEDIAN AGEhelp

39

#20 in the US

POPULATION AGE 65+help

17.2%

#21 in the US

Louisiana

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POPULATION UNDER 18 YEARS OLDhelp

23.4%

#13 in the US

MEDIAN AGEhelp

37

#43 in the US

POPULATION AGE 65+help

16.4%

#35 in the US

Maine

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POPULATION UNDER 18 YEARS OLDhelp

18.2%

#49 in the US

MEDIAN AGEhelp

45

#1 in the US

POPULATION AGE 65+help

21.8%

#2 in the US

Maryland

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POPULATION UNDER 18 YEARS OLDhelp

22.1%

#21 in the US

MEDIAN AGEhelp

39

#21 in the US

POPULATION AGE 65+help

16.3%

#36 in the US

Massachusetts

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POPULATION UNDER 18 YEARS OLDhelp

19.5%

#46 in the US

MEDIAN AGEhelp

40

#9 in the US

POPULATION AGE 65+help

17.4%

#22 in the US

Michigan

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POPULATION UNDER 18 YEARS OLDhelp

21.4%

#31 in the US

MEDIAN AGEhelp

40

#10 in the US

POPULATION AGE 65+help

18.2%

#12 in the US

Minnesota

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POPULATION UNDER 18 YEARS OLDhelp

22.9%

#22 in the US

MEDIAN AGEhelp

38

#31 in the US

POPULATION AGE 65+help

16.8%

#37 in the US

Mississippi

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POPULATION UNDER 18 YEARS OLDhelp

23.5%

#14 in the US

MEDIAN AGEhelp

38

#32 in the US

POPULATION AGE 65+help

16.9%

#38 in the US

Missouri

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POPULATION UNDER 18 YEARS OLDhelp

22.4%

#23 in the US

MEDIAN AGEhelp

39

#22 in the US

POPULATION AGE 65+help

17.7%

#23 in the US

Montana

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POPULATION UNDER 18 YEARS OLDhelp

21.3%

#32 in the US

MEDIAN AGEhelp

40

#11 in the US

POPULATION AGE 65+help

19.7%

#7 in the US

Nebraska

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POPULATION UNDER 18 YEARS OLDhelp

24.6%

#5 in the US

MEDIAN AGEhelp

37

#44 in the US

POPULATION AGE 65+help

16.5%

#39 in the US

Nevada

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POPULATION UNDER 18 YEARS OLDhelp

22.2%

#24 in the US

MEDIAN AGEhelp

38

#33 in the US

POPULATION AGE 65+help

16.5%

#40 in the US

New Hampshire

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POPULATION UNDER 18 YEARS OLDhelp

18.4%

#50 in the US

MEDIAN AGEhelp

43

#2 in the US

POPULATION AGE 65+help

19.3%

#8 in the US

New Jersey

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POPULATION UNDER 18 YEARS OLDhelp

21.8%

#33 in the US

MEDIAN AGEhelp

40

#12 in the US

POPULATION AGE 65+help

17%

#24 in the US

New Mexico

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POPULATION UNDER 18 YEARS OLDhelp

22.3%

#25 in the US

MEDIAN AGEhelp

38

#34 in the US

POPULATION AGE 65+help

18.5%

#13 in the US

New York

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POPULATION UNDER 18 YEARS OLDhelp

20.7%

#41 in the US

MEDIAN AGEhelp

39

#23 in the US

POPULATION AGE 65+help

17.4%

#25 in the US

North Carolina

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POPULATION UNDER 18 YEARS OLDhelp

21.8%

#34 in the US

MEDIAN AGEhelp

39

#24 in the US

POPULATION AGE 65+help

17.1%

#26 in the US

North Dakota

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POPULATION UNDER 18 YEARS OLDhelp

23.6%

#15 in the US

MEDIAN AGEhelp

35

#48 in the US

POPULATION AGE 65+help

16.1%

#41 in the US

Ohio

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POPULATION UNDER 18 YEARS OLDhelp

22.1%

#26 in the US

MEDIAN AGEhelp

40

#13 in the US

POPULATION AGE 65+help

17.9%

#27 in the US

Oklahoma

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POPULATION UNDER 18 YEARS OLDhelp

24%

#6 in the US

MEDIAN AGEhelp

37

#45 in the US

POPULATION AGE 65+help

16.4%

#42 in the US

Oregon

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POPULATION UNDER 18 YEARS OLDhelp

20.2%

#42 in the US

MEDIAN AGEhelp

40

#14 in the US

POPULATION AGE 65+help

18.6%

#14 in the US

Pennsylvania

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POPULATION UNDER 18 YEARS OLDhelp

20.6%

#43 in the US

MEDIAN AGEhelp

41

#8 in the US

POPULATION AGE 65+help

19.1%

#9 in the US

Rhode Island

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POPULATION UNDER 18 YEARS OLDhelp

19%

#47 in the US

MEDIAN AGEhelp

40

#15 in the US

POPULATION AGE 65+help

18.2%

#15 in the US

South Carolina

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POPULATION UNDER 18 YEARS OLDhelp

21.5%

#35 in the US

MEDIAN AGEhelp

40

#16 in the US

POPULATION AGE 65+help

18.7%

#16 in the US

South Dakota

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POPULATION UNDER 18 YEARS OLDhelp

24.6%

#7 in the US

MEDIAN AGEhelp

37

#46 in the US

POPULATION AGE 65+help

17.6%

#28 in the US

Tennessee

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POPULATION UNDER 18 YEARS OLDhelp

22%

#27 in the US

MEDIAN AGEhelp

39

#25 in the US

POPULATION AGE 65+help

17.1%

#29 in the US

Texas

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POPULATION UNDER 18 YEARS OLDhelp

25.3%

#2 in the US

POPULATION AGE 65+help

13.2%

#49 in the US

Utah

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POPULATION UNDER 18 YEARS OLDhelp

28.3%

#1 in the US

MEDIAN AGEhelp

31

#50 in the US

POPULATION AGE 65+help

11.7%

#50 in the US

Vermont

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POPULATION UNDER 18 YEARS OLDhelp

18.1%

#51 in the US

MEDIAN AGEhelp

43

#3 in the US

POPULATION AGE 65+help

20.6%

#4 in the US

Virginia

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POPULATION UNDER 18 YEARS OLDhelp

21.8%

#36 in the US

MEDIAN AGEhelp

38

#35 in the US

POPULATION AGE 65+help

16.3%

#43 in the US

Washington

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POPULATION UNDER 18 YEARS OLDhelp

21.7%

#37 in the US

MEDIAN AGEhelp

38

#36 in the US

POPULATION AGE 65+help

16.2%

#44 in the US

West Virginia

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POPULATION UNDER 18 YEARS OLDhelp

20.3%

#44 in the US

MEDIAN AGEhelp

43

#4 in the US

POPULATION AGE 65+help

20.9%

#5 in the US

Wisconsin

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POPULATION UNDER 18 YEARS OLDhelp

21.6%

#38 in the US

MEDIAN AGEhelp

40

#17 in the US

POPULATION AGE 65+help

18%

#17 in the US

Wyoming

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POPULATION UNDER 18 YEARS OLDhelp

22.7%

#28 in the US

MEDIAN AGEhelp

38

#37 in the US

POPULATION AGE 65+help

17.8%

#30 in the US