Overview
          293,713
                  Total Population
                35.6
                  Median age
                50.32%
                  Female population %
                98.7:100
                  Gender ratio (M:F)
                20-24 years
                  Largest age group
                53.4
                  Total dependency ratio
                White
                  Largest racial group
                29,843
                  Hispanic population
                Sources: U.S. Census Bureau, American Community Survey (ACS) 2021
TABLE OF CONTENTS
Age
Ottawa County's population is young compared to the rest of the country:
- The median age in Ottawa County is 35.6, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
 - Ottawa County's population under 18 was 23.96%, compared to the 22.51% nationwide.
 - Ottawa County's elderly or the senior population (over 65 age) was 15.12% as compared to 16.04% nationwide.
 - Of the total population in Ottawa County, 19.71% were under the age of 15, 23.59% aged 15 to 29, 41.58% aged 30 to 64, 13.21% aged 65 to 84, and 1.91% were 85 years of age and older.
 
Read more about Ottawa County, MI population by age ➔
Gender
There are 1,905 more females than males in Ottawa County:
- The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.32% females and 49.68% males in Ottawa County, MI.
 - The Ottawa County, MI gender ratio is 98.7:100 i.e. 98.7 men to 100 women (0.987).
 - For male population, the largest age group is 20-24 years with a population of 13,296.
 - For the female population, the largest age group is 20-24 years with a population of 13,110.
 
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Race / Ethnicity
Ottawa County's population has become increasingly diverse:
- Racial distribution of Ottawa County population: 87.58% are White, 1.66% are Black or African American, 0.38% are American Indian and Alaska Native, 2.67% are Asian, 0.02% are Native Hawaiian and other Pacific Islander, 2.86% are some other race and 4.83% are multiracial.
 - Ottawa County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
 - By ethnicity, 29,843 is Hispanic or Latino (of any race), and 263,87 (89.84% of the total population) is Non-Hispanic.
 - The largest racial group in Ottawa County is White with a population of 257,231 (87.58% of the total population).
 
Read more about Ottawa County, MI population by race ➔
Year by year
Ottawa County's population has not reached its peak yet and is showing a trend of further growth:
- The peak population was 300,873 in the year 2022
 - From 2000 to 2010, Ottawa County's population increased by 24,530 (10.24%), as compared to the national growth of 9.63%.
 - From 2010 to 2020, Ottawa County's population increased by 32,775 (12.41%), 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, Ottawa County's population was lowest in year 2000 at 239,584.
 
Read more about Ottawa County, MI 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)