Florence County, SC population age distribution
A complete breakdown of Florence County's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.
Age Group | Population | % of Total Population |
---|---|---|
Under 5 years | 8,152 | 5.94% |
5 to 9 years | 8,722 | 6.35% |
10 to 14 years | 10,030 | 7.31% |
15 to 19 years | 9,029 | 6.58% |
20 to 24 years | 8,439 | 6.15% |
25 to 29 years | 8,781 | 6.4% |
30 to 34 years | 8,519 | 6.21% |
35 to 39 years | 8,074 | 5.88% |
40 to 44 years | 8,702 | 6.34% |
45 to 49 years | 8,774 | 6.39% |
50 to 54 years | 8,902 | 6.48% |
55 to 59 years | 8,997 | 6.55% |
60 to 64 years | 8,832 | 6.43% |
65 to 69 years | 8,335 | 6.07% |
70 to 74 years | 6,079 | 4.43% |
75 to 79 years | 4,095 | 2.98% |
80 to 84 years | 2,856 | 2.08% |
85 years and over | 1,958 | 1.43% |
TABLE OF CONTENTS
Florence County, SC population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

The largest age group in Florence County, SC was for the group of age 10-14 years with a population of 10,030 (7.31%), according to the 2021 American Community Survey.
At the same time, the smallest age group in Florence County, SC was the 85+ years with a population of 1,958 (1.43%).
Florence County, SC population by age cohort
To better understand the age distribution of Florence County, SC's population, we divided it into the following 3 cohorts:
- Children : Under the age of 18 years
- Adults (working population): Between the age of 18 and 64 years
- Seniors: 65 years and above

Here's the population for each of the three cohorts.
Age Group | Population | % of Total Population |
---|---|---|
Under 18 years | 32,708 | 23.83% |
18 to 64 years | 81,245 | 59.18% |
85 years and over | 23,323 | 16.99% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- Florence County's population under 18 was 23.83%, compared to the 22.51% nationwide.
- Florence County's working population (between 18 and 64) was 59.18%, compared to 61.45% nationwide.
- Florence County's elderly or the senior population (over 65 age) was 16.99% as compared to 16.04% nationwide.
Florence County, SC population pyramid
Population pyramid for Florence County, SC is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.
Key stats from our analysis of the Florence County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for Florence County, SC, is 30.9.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for Florence County, SC, is 26.8.
- Total dependency ratio for Florence County, SC is 57.7.
- Potential support ratio, which is the number of youth (working age population) per elderly, for Florence County, SC is 3.7.

Here's the Florence County, SC's male and female population across different age groups:
Age Group | Population(Male) | Population(Female) | Total Population |
---|---|---|---|
Under 5 years | 4,124 | 4,028 | 8,152 |
5 to 9 years | 4,569 | 4,153 | 8,722 |
10 to 14 years | 4,847 | 5,183 | 10,030 |
15 to 19 years | 4,721 | 4,308 | 9,029 |
20 to 24 years | 3,940 | 4,499 | 8,439 |
25 to 29 years | 4,103 | 4,678 | 8,781 |
30 to 34 years | 3,991 | 4,528 | 8,519 |
35 to 39 years | 3,577 | 4,497 | 8,074 |
40 to 44 years | 4,359 | 4,343 | 8,702 |
45 to 49 years | 3,944 | 4,830 | 8,774 |
50 to 54 years | 4,178 | 4,724 | 8,902 |
55 to 59 years | 3,936 | 5,061 | 8,997 |
60 to 64 years | 4,318 | 4,514 | 8,832 |
65 to 69 years | 3,772 | 4,563 | 8,335 |
70 to 74 years | 2,685 | 3,394 | 6,079 |
75 to 79 years | 1,662 | 2,433 | 4,095 |
80 to 84 years | 1,158 | 1,698 | 2,856 |
85 years and over | 701 | 1,257 | 1,958 |
Things to know
What is the population of Florence County, SC under 18?
Florence County's population under the age of 18 is 32,708, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 23.83% of the total resident population of Florence County, SC.
What is the aging population in Florence County, SC?
Florence County's population aged 65 years and above was 23,323. As per the U.S. Census Bureau's American Community Survey, this population is 16.99% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates