Overview
          643
                  Total Population
                41.8
                  Median age
                46.66%
                  Female population %
                114.3:100
                  Gender ratio (M:F)
                40-44 years
                  Largest age group
                63.2
                  Total dependency ratio
                White
                  Largest racial group
                8
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
St. Libory's population is old compared to the rest of the country:
- The median age in St. Libory is 41.8, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
 - St. Libory's population under 18 was 17.26%, compared to the 22.51% nationwide.
 - St. Libory's elderly or the senior population (over 65 age) was 23.33% as compared to 16.04% nationwide.
 - Of the total population in St. Libory, 15.40% were under the age of 15, 11.20% aged 15 to 29, 50.08% aged 30 to 64, 22.71% aged 65 to 84, and 0.62% were 85 years of age and older.
 
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Gender
There are 43 less females than males in St. Libory:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 46.66% females and 53.34% males in St. Libory, IL.
 - The St. Libory, IL gender ratio is 114.3:100 i.e. 114.3 men to 100 women (1.143).
 - For male population, the largest age group is 65-69 years with a population of 37.
 - For the female population, the largest age group is 40-44 years with a population of 37.
 
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Race / Ethnicity
St. Libory's population is not that diverse:
- Racial distribution of St. Libory population: 99.53% are White and 0.47% are Native Hawaiian and other Pacific Islander.
 - St. Libory's racial breakdown clearly shows that there is an absolute majority of White population in the village.
 - By ethnicity, 8 is Hispanic or Latino (of any race), and 635 (98.76% of the total population) is Non-Hispanic.
 - The largest racial group in St. Libory is White with a population of 64 (99.53% of the total population).
 
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Year by year
St. Libory's population has already reached its peak and is showing a trend of decline:
- The peak population was 628 in the year 2020
 - From 2000 to 2010, St. Libory's population increased by 35 (5.98%), as compared to the national growth of 9.63%.
 - From 2010 to 2020, St. Libory's population increased by 8 (1.29%), 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, St. Libory's population was lowest in year 2000 at 585.
 
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References
- U.S. Census Bureau American Community Survey (ACS) 2017-2021 5-Year Estimates
 - U.S. Census Bureau Population Estimates Population Estimates Program (PEP)