ZipCrawl

NOTE: Gray indicates insufficient data or a suppressed estimate.

The northeastern and north-central regions of Wisconsin display notably higher median ages, with many zip codes reaching into the mid-50s to 60+, consistent with popular retirement and vacation-home areas like Vilas, Oneida, and Door counties. In sharp contrast, the Milwaukee metro area in the southeast and the Madison area in the south-central part of the state contain zip codes with the lowest median ages, dropping below 25 in several cases — likely driven by university populations and younger urban demographics. The western border counties along the Mississippi and much of the rural southwest trend toward moderate median ages in the 40–50 range, while scattered pockets of very low median age in central Wisconsin likely correspond to college towns such as Stevens Point and Eau Claire.

Data: U.S. Census Bureau, 2023 ACS