Marco Island 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 15.93K Marco Island city, FL population, the 75-79yrs age group constituted the highest percentage of the population (14.90%), followed by the 65-69yrs age group (13.76%), and the 70-74yrs age group (11.85%).

In the case of age cohorts, Seniors (65yrs and Over) constituted the highest percentage of the total population (57.14%), followed by Adults (18-64yrs) (35.41%), and Children (0-17yrs) (7.45%).

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.
Marco Island city, FL Percentages of Population By Age Group in 2021
75-79yrs
65-69yrs
70-74yrs
60-64yrs
80-84yrs
85yrs and Over
55-59yrs
50-54yrs
45-49yrs
10-14yrs
Marco Island city, FL Percentages of Population By Age Cohort in 2021
Seniors (65yrs and Over)
Adults (18-64yrs)
Children (0-17yrs)
Marco Island city, FL Population By Age Group in 2021
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Age Group Number of People % of Total
75-79yrs 2374 14.90
65-69yrs 2192 13.76
70-74yrs 1887 11.85
60-64yrs 1549 9.72
80-84yrs 1410 8.85
85yrs and Over 1238 7.77
55-59yrs 1176 7.38
50-54yrs 775 4.87
45-49yrs 516 3.24
10-14yrs 455 2.86
40-44yrs 406 2.55
20-24yrs 377 2.37
25-29yrs 367 2.30
5-9yrs 339 2.13
15-19yrs 273 1.71
35-39yrs 263 1.65
30-34yrs 171 1.07
Under 5yrs 161 1.01
Marco Island city, FL Population By Age Cohort in 2021
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Age Cohort Number of People % of Total
Seniors (65yrs and Over) 9101 57.14
Adults (18-64yrs) 5641 35.41
Children (0-17yrs) 1187 7.45