NOTE: Gray indicates insufficient data or a suppressed estimate.
Montana's median age distribution reveals a striking contrast between the southwestern and south-central regions, where numerous zip codes cluster in the 50–60+ range (yellow), and the north-central and northeastern portions of the state, which trend younger with median ages in the 35–45 range (green/teal). Several zip codes near major population centers—particularly around Missoula, Bozeman, and Billings—display notably lower median ages in the 20–30 range (dark blue/purple), likely reflecting the influence of university student populations and younger urban demographics. The Crow and Northern Cheyenne reservation areas in the south-central region also stand out with distinctly younger median ages compared to surrounding rural zip codes, consistent with the younger age structures typical of Native American communities.
Data: U.S. Census Bureau, 2023 ACS
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