Housing % of Units Built Since 2010, by Zip Code (ZCTA5) — Montana

NOTE: Gray indicates insufficient data or a suppressed estimate.

Zip codes in western Montana—particularly around the Flathead Valley, Missoula, and Bozeman corridors—display notably higher shares of post-2010 construction, with several areas exceeding 20–30%, reflecting sustained population growth and development pressure in these amenity-rich regions. In contrast, much of central and eastern Montana exhibits considerably lower new-build rates, generally below 8%, consistent with stagnant or declining population trends across the rural Great Plains. Scattered yellow-coded outliers in eastern Montana likely represent small zip codes where even modest construction activity registers as a high percentage due to a limited existing housing stock.

Data: U.S. Census Bureau, 2023 ACS

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