[4] At its founding, Lincoln County accounted for three-fifths of the state's land, and stretched east to Nova Scotia.

There were 20,849 housing units at an average density of 46 per square mile (18/km2).

25.3% were of English, 15.4% United States or American, 11.2% Irish, 9.0% German and 7.3% French ancestry.

Most of those claiming to be of "American" ancestry are actually of English descent, but have family that has been in the country for so long, in many cases since the early seventeenth century that they choose to identify simply as "American".

26.70% of all households were made up of individuals, and 12.10% had someone living alone who was 65 years of age or older.

As of the 2010 United States census, there were 34,457 people, 15,149 households, and 9,749 families living in the county.

[20] In terms of ancestry, 30.4% were English, 17.7% were Irish, 13.4% were German, 8.6% were Scottish, and 8.5% were American.

In October 2017, the Northern New England Passenger Rail Authority announced plans to extend one weekend Downeaster round trip to Rockland between Memorial Day and Labor Day beginning in 2018.

Intermediate stops would be made at Bath, Wiscasset, and Newcastle.

[28] As part of preparation, Amtrak, along with the Northern New England Passenger Rail Authority, Maine Department of Transportation and the Central Maine and & Quebec Railroad, made a test run of a train on August 14.