St. Augustine city, FL Population By Age Group and Age Cohort in 2021 (ACS-5Yrs)

Updated on February 28, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 13.99K St. Augustine city, FL population, the 15-19yrs age group constituted the highest percentage of the population (9.82%), followed by the 70-74yrs age group (8.70%), and the 20-24yrs age group (7.87%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (64.51%), followed by Seniors (65yrs and Over) (26.65%), and Children (0-17yrs) (8.84%).

The first and second charts below shows the percentage of the population by age group and age cohort respectively. The table below also shows the number and percentages for each age group and age cohort.

You can also see similar information for other Florida cities and places, and for Florida.

Data Source: US Census Bureau.
St. Augustine city, FL Percentages of Population By Age Group in 2021
15-19yrs
70-74yrs
20-24yrs
65-69yrs
60-64yrs
30-34yrs
55-59yrs
25-29yrs
50-54yrs
40-44yrs
St. Augustine city, FL Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Seniors (65yrs and Over)
Children (0-17yrs)
St. Augustine city, FL Population By Age Group in 2021
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Age Group Number of People % of Total
15-19yrs 1374 9.82
70-74yrs 1218 8.70
20-24yrs 1101 7.87
65-69yrs 1093 7.81
60-64yrs 1071 7.65
30-34yrs 997 7.12
55-59yrs 991 7.08
25-29yrs 932 6.66
50-54yrs 777 5.55
40-44yrs 719 5.14
35-39yrs 673 4.81
45-49yrs 663 4.74
85yrs and Over 598 4.27
5-9yrs 490 3.50
75-79yrs 479 3.42
80-84yrs 341 2.44
10-14yrs 290 2.07
Under 5yrs 187 1.34
St. Augustine city, FL Population By Age Cohort in 2021
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Age Cohort Number of People % of Total
Adults (18-64yrs) 9028 64.51
Seniors (65yrs and Over) 3729 26.65
Children (0-17yrs) 1237 8.84