Sebastian 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 24.84K Sebastian city, FL population, the 65-69yrs age group constituted the highest percentage of the population (11.75%), followed by the 55-59yrs age group (8.96%), and the 60-64yrs age group (8.79%).

In the case of age cohorts, Adults (18-64yrs) constituted the highest percentage of the total population (52.20%), followed by Seniors (65yrs and Over) (34.77%), and Children (0-17yrs) (13.03%).

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.
Sebastian city, FL Percentages of Population By Age Group in 2021
65-69yrs
55-59yrs
60-64yrs
70-74yrs
45-49yrs
50-54yrs
75-79yrs
30-34yrs
80-84yrs
10-14yrs
Sebastian city, FL Percentages of Population By Age Cohort in 2021
Adults (18-64yrs)
Seniors (65yrs and Over)
Children (0-17yrs)
Sebastian city, FL Population By Age Group in 2021
0 of 0
Age Group Number of People % of Total
65-69yrs 2919 11.75
55-59yrs 2227 8.96
60-64yrs 2184 8.79
70-74yrs 1844 7.42
45-49yrs 1709 6.88
50-54yrs 1658 6.67
75-79yrs 1579 6.36
30-34yrs 1522 6.13
80-84yrs 1361 5.48
10-14yrs 1012 4.07
35-39yrs 1011 4.07
40-44yrs 1006 4.05
85yrs and Over 935 3.76
5-9yrs 887 3.57
15-19yrs 887 3.57
20-24yrs 852 3.43
Under 5yrs 692 2.79
25-29yrs 558 2.25
Sebastian city, FL Population By Age Cohort in 2021
0 of 0
Age Cohort Number of People % of Total
Adults (18-64yrs) 12969 52.20
Seniors (65yrs and Over) 8638 34.77
Children (0-17yrs) 3236 13.03