Overview
          20,570
                  Total Population
                39.9
                  Median age
                49.24%
                  Female population %
                103.1:100
                  Gender ratio (M:F)
                10-14 years
                  Largest age group
                62.9
                  Total dependency ratio
                White
                  Largest racial group
                684
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Jay County's population is old compared to the rest of the country:
- The median age in Jay County is 39.9, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
- Jay County's population under 18 was 25.18%, compared to the 22.51% nationwide.
- Jay County's elderly or the senior population (over 65 age) was 17.80% as compared to 16.04% nationwide.
- Of the total population in Jay County, 20.82% were under the age of 15, 18.34% aged 15 to 29, 43.04% aged 30 to 64, 15.13% aged 65 to 84, and 2.67% were 85 years of age and older.
 
Read more about Jay County, IN population by age ➔
Gender
There are 312 less females than males in Jay County:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 49.24% females and 50.76% males in Jay County, IN.
- The Jay County, IN gender ratio is 103.1:100 i.e. 103.1 men to 100 women (1.031).
- For male population, the largest age group is 10-14 years with a population of 819.
- For the female population, the largest age group is 10-14 years with a population of 780.
 
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Race / Ethnicity
Jay County's population has become increasingly diverse:
- Racial distribution of Jay County population: 95.78% are White, 0.44% are Black or African American, 0.23% are American Indian and Alaska Native, 0.45% are Asian, 1.53% are some other race and 1.58% are multiracial.
- Jay County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
- By ethnicity, 684 is Hispanic or Latino (of any race), and 19,886 (96.67% of the total population) is Non-Hispanic.
- The largest racial group in Jay County is White with a population of 19,701 (95.78% of the total population).
 
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Year by year
Jay County's population has already reached its peak and is showing a trend of decline:
- The peak population was 21,789 in the year 2000
- From 2000 to 2010, Jay County's population decreased by 610 (2.80%), as compared to the national growth of 9.63%.
- From 2010 to 2020, Jay County's population decreased by 703 (3.32%), 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, Jay County's population was lowest in year 2022 at 20,198.
 
Read more about Jay County, IN 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)
