It is one of the 108 one or two member districts into which the state was divided by the redistricting and reapportionment plan developed by the Vermont General Assembly following the 2000 United States census.
A new plan will be developed in 2012 following the 2010 United States census.
The Addison-3 District includes all of the Addison County towns of Addison, Ferrisburgh, Panton, and Waltham, and the city of Vergennes.
The two member Addison-3 District had a population of 7,952 in that same census, 2.04% below the state average.
This means that there is an average of 3,976 residents per representative.