What period of time plurality of houses were built in the U.S., by ZIP code and county

US ZIP codes by period in which the plurality of houses has been built
US ZIP codes by period in which the plurality of houses has been built
Szymon Pifczyk

U.S. county median year housing structure built
U.S. county median year housing structure built
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Alex E

“Maps are like campfires – everyone gathers around them, because they allow people to understand complex issues at a glance, and find agreement about how to help the land.”