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2015 Age Distribution

  United States   Oklahoma   Canadian County
Estimated Total Percent of the Total Population Total Percent of the Total Population Total Percent of the Total Population
All persons 321,418,821 (X) 3,911,338 (X) 133,378 (X)
Under 5 years 19,793,807 6.2% 262,951 6.70% 8,855 6.6%
5 to 9 years 20,582,473 6.4% 271,828 6.90% 10,690 8.0%
10 to 14 years 20,627,389 6.4% 268,107 6.90% 9,751 7.3%
15 to 19 years 21,426,912 6.7% 269,997 6.90% 9,775 7.3%
20 to 24 years 22,541,077 7.0% 280,592 7.20% 7,028 5.3%
25 to 34 years 43,897,832 13.7% 535,955 13.70% 18,167 13.6%
35 to 44 years 40,804,130 12.7% 479,383 12.30% 19,463 14.6%
45 to 54 years 43,135,580 13.4% 481,745 12.30% 17,999 13.5%
55 to 59 years 21,590,716 6.7% 252,792 6.50% 8,762 6.6%
60 to 64 years 19,286,425 6.0% 231,957 5.90% 6,425 4.8%
65 to 74 years 27,587,267 8.6% 334,259 8.50% 10,117 7.6%
75 to 84 years 13,984,046 4.4% 175,271 4.50% 4,432 3.3%
85 years and over 6,161,167 1.9% 66,501 1.70% 1,914 1.4%
             
18 years and over 247,789,111 77.1% 2,950,241 75.4% 98,010 73.5%
21 years and over 234,350,853 72.9% 2,780,659 71.1% 93,021 69.7%
62 years and over 58,839,989 18.3% 709,434 18.1% 19,879 14.9%
65 years and over 47,732,480 14.9% 576,031 14.7% 16,463 12.3%
             
Median age (years) 38 (X) 36 (X) 36 (X)
       
Cleveland County Oklahoma County Pottawatomie County
Total Percent of Total Population Total Percent of the Total Population Total Percent of the Total Population
All persons 274,458 (X) 776,864 (X) 71,875 (X)
Under 5 years 15,752 5.7% 61,419 7.9% 4,794 6.7%
5 to 9 years 18,344 6.7% 56,255 7.2% 4,861 6.8%
10 to 14 years 16,345 6.0% 52,767 6.8% 4,636 6.5%
15 to 19 years 21,004 7.7% 48,197 6.2% 5,264 7.3%
20 to 24 years 30,047 10.9% 54,243 7.0% 4,176 7.2%
25 to 34 years 40,157 14.6% 123,208 15.9% 8,719 12.1%
35 to 44 years 36,435 13.3% 97,624 12.6% 8,940 12.4%
45 to 54 years 31,747 11.6% 92,623 11.9% 9,121 12.7%
55 to 59 years 17,843 6.5% 49,204 6.3% 4,698 6.5%
60 to 64 years 12,890 4.7% 43,040 5.5% 4,123 5.7%
65 to 74 years 20,387 7.4% 56,559 7.3% 6,779 9.4%
75 to 84 years 10,728 3.9% 28,469 3.7% 3,779 5.3%
85 years and over 2,779 1.0% 13,256 1.7% 985 1.4%
             
18 years and over 213,634 77.8% 576,910 74.3% 54,421 75.7%
21 years and over 196,318 71.5% 548,336 70.6% 51,226 71.3%
62 years and over 41,760 15.2% 122,848 15.8% 13,776 19.2%
65 years and over 33,894 12.3% 98,284 12.7% 11,543 16.1%
             
Median age (years) 34 (X) 34 (X) 38 (X)

Source: U.S. Census Bureau, 2015 American Community Survey 1-Year Estimates

Note- Information for Kingfisher, Lincoln, and Logan counties are not currently available