Washtenaw County MI Information


Washtenaw County Subdivisions

Washtenaw County MI Data & Demographics (As of July 1, 2015)


Total Population 353,972
Population in Households 335,907
Population in Familes 241,546
Population in Group Qrtrs 18,065
Population Density1 501
Diversity Index2 49


Total Households 141,672
Average Household Size 2.37
Family Households 80,181
Average Family Size 3


Total Housing Units 152,230 (100%)
Owner Occupied HU 84,318 (55.4%)
Renter Occupied HU 57,354 (37.7%)
Vacant Housing Units 10,558 ( 6.9%)
Median Home Value $218,385
Average Home Value $252,336


Median Household Income $57,302
Average Household Income $81,991
Per Capita Income $33,517
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.5% 0.68%
Households 0.61% 0.74%
Families 0.31% 0.54%
Median Household Income   3.52%
Per Capita Income   2.69%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


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, 2015 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 Density1 # 7 93rd
Diversity Index2 # 4 96th
Median Household Income # 4 96th
Per Capita Income # 3 98th

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