Delaware sign theConstitutionon December 7 , 1787 , which make it theoldest statein the U.S. Pennsylvania and New Jersey followed suit that same calendar month . If you ’re talking about the age of a state’spopulation , though , the one-time three are a fiddling farther northwards — namely , Maine , New Hampshire , and Vermont .
For his information visualisation blogFlowingData , statistician Nathan Yau charted the medial age of each state ’s ( plus Washington , D.C. ’s and Puerto Rico ’s ) population using information from the 2021American Community Survey(ACS ) . Like the decennial census , the ACS is negociate by the U.S. Census Bureau ; unlike the census , which only find once every 10 years , the ACS is conducted every calendar month of every yr . It ’s not comprehensive — it is sent to only about 3.5 million address at a meter — but the frequency stand for that the data point is often more up - to - date than the nosecount ’s .
In case you have n’t thought much about median value since your high school mathematics division , here ’s a refresher : The median value in a dataset is the one in the very middle when all the numbers are in order . The average value is what you get when you add up all the values and part them by the number of values in the dataset . If there are outlier on either end , they can skew the average — but the median value is always dead - nerve centre , return equal weight to each value .
The median age of Mainers is 44.7 , more than a year and a half older than New Hampshire and two year older than Vermont . Puerto Rico broke up the New England three , arrive secondly to last with a medial age of 43.1 .
The other soil included in the rankings is the 2nd youngest : Washington , D.C. ’s median age is 34.3 , three geezerhood older than first - place closer Utah . Those two places instance one of the most interesting takeaways from the information : As Yau set up it , “ the distribution of old age does n’t shift evenly all the fashion down . ” D.C. is so young because a significant number of its residents are in their twenty and thirties , while Utah ’s depleted median age is mostly because it ’s home to piles of nipper .
you could see your state ’s medial historic period in the list below , and explore all the age wall bracket breakdowns viaFlowingData .
outrank
Department of State
Median Age
1 .
Utah
31.3
2 .
Washington , D.C.
34.3
3 .
Alaska
35
Texas
4 .
North Dakota
35.2
5 .
Nebraska
36.7
6 .
Idaho
36.8
Oklahoma
7 .
California
37
Kansas
8 .
Colorado
37.1
Georgia
South Dakota
9 .
Louisiana
37.4
10 .
Mississippi
37.8
11 .
Indiana
37.9
Washington
12 .
Arizona
38.1
13 .
Minnesota
38.2
14 .
Wyoming
15 .
Arkansas River
38.3
Iowa
Nevada
New Mexico
16 .
Illinois
38.5
Virginia
17 .
Missouri
38.8
Tennessee
18 .
Maryland
38.9
19 .
Kentucky
39
North Carolina
20 .
New York
39.2
21 .
Alabama
39.3
22 .
Ohio
39.4
23 .
Hawaii
39.6
Massachusetts
Oregon
Wisconsin
24 .
Michigan
39.8
South Carolina
25 .
Montana
40
New Jersey
Rhode Island
26 .
Pennsylvania
40.8
27 .
Connecticut
41
28 .
Delaware
41.1
29 .
Florida
42.3
30 .
West Virginia
42.6
31 .
Vermont
42.7
32 .
New Hampshire
43
33 .
Puerto Rico
43.1
34 .
Maine
44.7
