ZIP Code 59640

ZIP code 59640 is classified by USPS as a standard delivery area and covers roughly 8.9 square miles in Marysville, Lewis and Clark County, Montana. The area is home to 89 residents, producing a population density of 10 people per square mile, and falls within the Denver time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 59640 against Montana and the nation.

On the economic side, the median household income for ZIP 59640 sits at $99,167 (42% above the Montana average), while per-capita income is $42,500. The poverty rate stands at 3.8% and the unemployment rate at 0.0%. On housing, the median home value is $287,500 (12% below the state average) with median rent at — per month, and 74.1% of occupied units are owner-occupied, a direct signal of whether 59640 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 50.9% of adults hold a bachelor's degree or higher, the median age is 55.1, and the average commute is —. We also surface 1 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Lewis and Clark County, so you can benchmark 59640 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →