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Lewistown, MT ZIP code

The ZIP code for Lewistown, Montana is 59457. It is in Fergus County.

Population in these ZIPs
9,135
Avg. median income
$64,800population-weighted
Typical home value
$284,700population-weighted
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ZIP codes within 10 miles

Lewistown, MT ZIP code list

Lewistown, MT ZIP codes
ZIP codePopulationMedian incomeTypical home value
594579,135$64,762$284,700

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 Lewistown

Frequently asked questions

What is the ZIP code for Lewistown, MT?

The ZIP code for Lewistown, MT is 59457.

What county is Lewistown, Montana in?

Lewistown ZIP codes are in Fergus County.