Sullivan County, IN Population

Overview

20,814

Total Population

40.6

Median age

46.48%

Female population %

115.2:100

Gender ratio (M:F)

25-29 years

Largest age group

53.1

Total dependency ratio

White

Largest racial group

371

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Sullivan County's population is old compared to the rest of the country:

The median age in Sullivan County is 40.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Sullivan County's population under 18 was 20.51%, compared to the 22.51% nationwide.
Sullivan County's elderly or the senior population (over 65 age) was 17.52% as compared to 16.04% nationwide.
Of the total population in Sullivan County, 17.14% were under the age of 15, 18.25% aged 15 to 29, 47.08% aged 30 to 64, 15.62% aged 65 to 84, and 1.90% were 85 years of age and older.

There are 1,466 less females than males in Sullivan County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 46.48% females and 53.52% males in Sullivan County, IN.
The Sullivan County, IN gender ratio is 115.2:100 i.e. 115.2 men to 100 women (1.152).
For male population, the largest age group is 25-29 years with a population of 897.
For the female population, the largest age group is 60-64 years with a population of 698.

Sullivan County's population has become increasingly diverse:

Racial distribution of Sullivan County population: 91.81% are White, 3.54% are Black or African American, 0.07% are American Indian and Alaska Native, 0.09% are Asian, 0.04% are Native Hawaiian and other Pacific Islander, 0.48% are some other race and 3.98% are multiracial.
Sullivan County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 371 is Hispanic or Latino (of any race), and 20,443 (98.22% of the total population) is Non-Hispanic.
The largest racial group in Sullivan County is White with a population of 19,11 (91.81% of the total population).

Sullivan County's population has already reached its peak and is showing a trend of decline:

The peak population was 21,784 in the year 2002
From 2000 to 2010, Sullivan County's population decreased by 375 (1.72%), as compared to the national growth of 9.63%.
From 2010 to 2020, Sullivan County's population decreased by 568 (2.66%), 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 County's population was lowest in year 2019 at 20,601.