Overview
          4,389
                  Total Population
                49.2
                  Median age
                45.57%
                  Female population %
                119.4:100
                  Gender ratio (M:F)
                70-74 years
                  Largest age group
                89.8
                  Total dependency ratio
                White
                  Largest racial group
                206
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Buffalo's population is old compared to the rest of the country:
- The median age in Buffalo is 49.2, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
 - Buffalo's population under 18 was 19.32%, compared to the 22.51% nationwide.
 - Buffalo's elderly or the senior population (over 65 age) was 29.87% as compared to 16.04% nationwide.
 - Of the total population in Buffalo, 17.43% were under the age of 15, 15.79% aged 15 to 29, 36.91% aged 30 to 64, 26.00% aged 65 to 84, and 3.87% were 85 years of age and older.
 
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Gender
There are 389 less females than males in Buffalo:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 45.57% females and 54.43% males in Buffalo, WY.
 - The Buffalo, WY gender ratio is 119.4:100 i.e. 119.4 men to 100 women (1.194).
 - For male population, the largest age group is 20-24 years with a population of 231.
 - For the female population, the largest age group is 70-74 years with a population of 228.
 
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Race / Ethnicity
Buffalo's population has become increasingly diverse:
- Racial distribution of Buffalo population: 92.41% are White, 1.37% are Black or African American, 1.12% are American Indian and Alaska Native, 1.07% are Asian, 0.48% are some other race and 3.55% are multiracial.
 - Buffalo's racial breakdown clearly shows that there is an absolute majority of White population in the city.
 - By ethnicity, 206 is Hispanic or Latino (of any race), and 4,183 (95.31% of the total population) is Non-Hispanic.
 - The largest racial group in Buffalo is White with a population of 4,056 (92.41% of the total population).
 
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Year by year
Buffalo's population has already reached its peak and is showing a trend of decline:
- The peak population was 4,876 in the year 2009
 - From 2000 to 2010, Buffalo's population increased by 688 (17.62%), as compared to the national growth of 9.63%.
 - From 2010 to 2020, Buffalo's population decreased by 165 (3.59%), 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, Buffalo's population was lowest in year 2000 at 3,904.
 
Read more about Buffalo, WY 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)