Washtenaw County MI Information


Washtenaw County Subdivisions

Washtenaw County MI Data & Demographics (As of July 1, 2018)


Total Population 370,067
Population in Households 347,754
Population in Familes 246,318
Population in Group Qrtrs 22,313
Population Density1 524
Diversity Index2 50


Median Household Income $66,336
Average Household Income $94,659
Per Capita Income $38,017


Total Housing Units 153,671 (100%)
Owner Occupied HU 84,002 (54.7%)
Renter Occupied HU 61,162 (39.8%)
Vacant Housing Units 8,507 ( 5.5%)
Median Home Value $248,889
Average Home Value $289,191


Total Households 145,164
Average Household Size 2.4
Family Households 81,632
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.86% 0.68%
Households 0.69% 0.68%
Families 0.41% 0.5%
Median Household Income   3.15%
Per Capita Income   3.22%


Washtenaw County MI - Peer Comparisons by Rank and Percentile

The table below compares Washtenaw County to the other 83 counties and county equivalents in Michigan by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 6 94th
Population Density # 7 93rd
Diversity Index # 5 95th
Median Household Income # 3 98th
Per Capita Income # 3 98th

Additional comparisons and rankings can be made with a VERY EASY TO USE Michigan Census Data Comparison Tool.