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Saint Ignatius, MT ZIP code

The ZIP code for Saint Ignatius (also written St. Ignatius), Montana is 59865. It is in Lake County.

Population in these ZIPs
3,635
Avg. median income
$56,500population-weighted
Typical home value
$539,700population-weighted
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ZIP codes within 10 miles

Saint Ignatius, MT ZIP code list

Saint Ignatius, MT ZIP codes
ZIP codePopulationMedian incomeTypical home value
598653,635$56,473$539,700

Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology

Cities near Saint Ignatius

Frequently asked questions

What is the ZIP code for Saint Ignatius, MT?

The ZIP code for Saint Ignatius, MT is 59865.

What county is Saint Ignatius, Montana in?

Saint Ignatius ZIP codes are in Lake County.