Washtenaw County, MI Population

Overview

372,428

Total Population

34.1

Median age

50.24%

Female population %

99:100

Gender ratio (M:F)

20-24 years

Largest age group

41.7

Total dependency ratio

White

Largest racial group

18,578

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Washtenaw County's population is young compared to the rest of the country:

The median age in Washtenaw County is 34.1, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Washtenaw County's population under 18 was 18.69%, compared to the 22.51% nationwide.
Washtenaw County's elderly or the senior population (over 65 age) was 14.13% as compared to 16.04% nationwide.
Of the total population in Washtenaw County, 15.29% were under the age of 15, 29.50% aged 15 to 29, 41.08% aged 30 to 64, 12.62% aged 65 to 84, and 1.51% were 85 years of age and older.

There are 1,792 more females than males in Washtenaw County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 50.24% females and 49.76% males in Washtenaw County, MI.
The Washtenaw County, MI gender ratio is 99:100 i.e. 99 men to 100 women (0.990).
For male population, the largest age group is 20-24 years with a population of 23,998.
For the female population, the largest age group is 20-24 years with a population of 23,332.

Washtenaw County's population has become increasingly diverse:

Racial distribution of Washtenaw County population: 72.02% are White, 11.67% are Black or African American, 0.27% are American Indian and Alaska Native, 9.12% are Asian, 0.03% are Native Hawaiian and other Pacific Islander, 1.21% are some other race and 5.68% are multiracial.
Washtenaw County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 18,578 is Hispanic or Latino (of any race), and 353,85 (95.01% of the total population) is Non-Hispanic.
The largest racial group in Washtenaw County is White with a population of 268,216 (72.02% of the total population).

Washtenaw County's population has already reached its peak and is showing a trend of decline:

The peak population was 371,817 in the year 2020
From 2000 to 2010, Washtenaw County's population increased by 21,443 (6.61%), as compared to the national growth of 9.63%.
From 2010 to 2020, Washtenaw County's population increased by 25,837 (7.47%), 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, Washtenaw County's population was lowest in year 2000 at 324,537.