Addison County's 36,939 residents represent 6% of Vermont's total population of 626,299. Addison County is Vermont's 7th most populous county.
Chittenden County, home to Burlington, is Vermont's population center, with more than one-quarter of the state's residents. Essex County, in the remote and rural northeast corner of the state, is the least populated county. Its population is less than that of the town of Middlebury.