Map showing the electoral division of Mersey, as of the 2017 periodic review.

[1] The electoral division of Mersey is one of the fifteen constituencies in the Tasmanian Legislative Council.

[2] In January 2019, the division had 27,668 enrolled voters.

[4] The electorate of Mersey includes part of Latrobe and the city of Devonport, the localities of Spreyton, Turners Beach and Forth.

Its current member of parliament is independent Mike Gaffney, elected in 2009.