Overview
6,192
Total Population
43.5
Median age
51.31%
Female population %
94.9:100
Gender ratio (M:F)
60-64 years
Largest age group
61.2
Total dependency ratio
White
Largest racial group
178
Hispanic population
Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Sullivan's population is old compared to the rest of the country:
- The median age in Sullivan is 43.5, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Sullivan's population under 18 was 22.92%, compared to the 22.51% nationwide.
- Sullivan's elderly or the senior population (over 65 age) was 20.24% as compared to 16.04% nationwide.
- Of the total population in Sullivan, 17.75% were under the age of 15, 20.07% aged 15 to 29, 41.94% aged 30 to 64, 15.29% aged 65 to 84, and 4.94% were 85 years of age and older.

Read more about Sullivan, MO population by age ➔
Gender
There are 162 more females than males in Sullivan:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.31% females and 48.69% males in Sullivan, MO.
- The Sullivan, MO gender ratio is 94.9:100 i.e. 94.9 men to 100 women (0.949).
- For male population, the largest age group is 60-64 years with a population of 303.
- For the female population, the largest age group is 0-4 years with a population of 267.

Read more about Sullivan, MO population by gender ➔
Race / Ethnicity
Sullivan's population has become increasingly diverse:
- Racial distribution of Sullivan population: 96.41% are White, 0.44% are American Indian and Alaska Native, 0.84% are some other race and 2.31% are multiracial.
- Sullivan's racial breakdown clearly shows that there is an absolute majority of White population in the city.
- By ethnicity, 178 is Hispanic or Latino (of any race), and 6,014 (97.13% of the total population) is Non-Hispanic.
- The largest racial group in Sullivan is White with a population of 5,97 (96.41% of the total population).

Read more about Sullivan, MO population by race ➔
Year by year
Sullivan's population has already reached its peak and is showing a trend of decline:
- The peak population was 7,166 in the year 2017
- From 2000 to 2010, Sullivan's population increased by 682 (10.61%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Sullivan's population decreased by 194 (2.73%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
- Between the year 2000 and 2022, Sullivan's population was lowest in year 2001 at 6,425.

Read more about Sullivan, MO population by year ➔
References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
- U.S. Census Bureau Population Estimates Population Estimates Program (PEP)