Household Average Size by Zip Code (ZCTA5) — Michigan

NOTE: Gray indicates insufficient data or a suppressed estimate.

Michigan's household sizes exhibit a clear urban-rural divide, with the smallest averages (1.5–2.0) concentrated in Detroit's urban core and several college-town zip codes, while the surrounding suburban and exurban areas in southeast Michigan display notably higher values. The Upper Peninsula trends toward moderate household sizes (2.2–2.6) with scattered pockets of both higher and lower values, whereas the northern Lower Peninsula shows a more uniform mid-range pattern. The largest household sizes (3.0+) appear in select zip codes in the western Lower Peninsula and scattered suburban communities south and west of Detroit, likely reflecting areas with younger families and newer residential development.

Data: U.S. Census Bureau, 2023 ACS

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