Overview
          1,350
                  Total Population
                45.2
                  Median age
                47.33%
                  Female population %
                111.3:100
                  Gender ratio (M:F)
                50-54 years
                  Largest age group
                54.1
                  Total dependency ratio
                White
                  Largest racial group
                7
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
West Leechburg's population is old compared to the rest of the country:
- The median age in West Leechburg is 45.2, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
 - West Leechburg's population under 18 was 16.30%, compared to the 22.51% nationwide.
 - West Leechburg's elderly or the senior population (over 65 age) was 20.96% as compared to 16.04% nationwide.
 - Of the total population in West Leechburg, 14.15% were under the age of 15, 17.11% aged 15 to 29, 47.78% aged 30 to 64, 17.11% aged 65 to 84, and 3.85% were 85 years of age and older.
 
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Gender
There are 72 less females than males in West Leechburg:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 47.33% females and 52.67% males in West Leechburg, PA.
 - The West Leechburg, PA gender ratio is 111.3:100 i.e. 111.3 men to 100 women (1.113).
 - For male population, the largest age group is 40-44 years with a population of 65.
 - For the female population, the largest age group is 55-59 years with a population of 57.
 
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Race / Ethnicity
West Leechburg's population has become increasingly diverse:
- Racial distribution of West Leechburg population: 94% are White, 2.89% are Black or African American, 0.37% are some other race and 2.74% are multiracial.
 - West Leechburg's racial breakdown clearly shows that there is an absolute majority of White population in the borough.
 - By ethnicity, 7 is Hispanic or Latino (of any race), and 1,343 (99.48% of the total population) is Non-Hispanic.
 - The largest racial group in West Leechburg is White with a population of 1,269 (94% of the total population).
 
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Year by year
West Leechburg's population has already reached its peak and is showing a trend of decline:
- The peak population was 1,294 in the year 2010
 - From 2000 to 2010, West Leechburg's population increased by 6 (0.47%), as compared to the national growth of 9.63%.
 - From 2010 to 2020, West Leechburg's population decreased by 28 (2.16%), 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, West Leechburg's population was lowest in year 2019 at 1,221.
 
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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)