The First Bancorp, Inc. (FNLC) 10-K 2019 FY Annual report

Exhibit 23.1 Consent of Independent Registered Public Accounting Firm

Consent of Independent Registered Public Accounting Firm

As the independent registered public accountants of The First Bancorp, Inc., we hereby consent to the incorporation by reference in the registration statements No. 333-209156 on Form S-8 and No. 333-64308 on Form S-3 of our report dated March 6, 2020, with respect to the consolidated balance sheets of The First Bancorp, Inc. and Subsidiary as of December 31, 2019 and 2018, and the related consolidated statements of income and comprehensive income, changes in shareholders' equity and cash flows for each of the three years in the period ended December 31, 2019, and the effectiveness of internal control over financial reporting as of December 31, 2019, which reports appear in the December 31, 2019 annual report on Form 10-K of The First Bancorp, Inc.

/s/ Berry Dunn McNeil & Parker, LLC

Bangor, Maine

March 6, 2020