List of counties in Maine



This is a list of the sixteen  in the  of . Prior to statehood, Maine was officially part of the state of and was called the. Maine was granted statehood on, as part of the. Nine of the sixteen counties had their borders defined while Maine was still part of Massachussetts, and hence are older than the state itself. Even after 1820, the exact location of the northern border of Maine was disputed with, until the question was settled and the northern counties took their final, official form by treaty in 1845. Almost all of was disputed land until the treaty was signed.

No new counties have been created since 1860, when and  were created. The most populous counties tend to be located in the southeastern portion of the state, along the Atlantic seaboard. The largest counties in terms of land area are inland. Maine's county names derive from a mix of British, American, and Native American sources, reflecting Maine's pre-colonial, colonial, and national heritage.

The (FIPS) code, which is used by the United States government to uniquely identify states and counties, is provided with each entry. Maine's code is 23, which when combined with any county code would be written as 23XXX. The FIPS code for each county links to census data for that county.

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