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Thomaston, ME ZIP code

The ZIP code for Thomaston, Maine is 04861. It is in Knox County.

Population in these ZIPs
2,769
Avg. median income
$56,400population-weighted
Typical home value
$340,100population-weighted
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ZIP codes within 10 miles

Thomaston, ME ZIP code list

Thomaston, ME ZIP codes
ZIP codePopulationMedian incomeTypical home value
048612,769$56,435$340,100

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

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Frequently asked questions

What is the ZIP code for Thomaston, ME?

The ZIP code for Thomaston, ME is 04861.

What county is Thomaston, Maine in?

Thomaston ZIP codes are in Knox County.