A Saturday in July
This visualization illustrates the ebb and flow of the island population on an average Saturday in July 2017, incorporating mobility data, ferries, and planes.
NDP’s “Making It Count” Event at the Dreamland
Check out the full video of our “Making It Count” event at the Dreamland where we unveiled the Effective Population Study on July 17th, 2018
We estimated Nantucket’s permanent population by asking Civis Analytics to look into its database of 251 million American adults. We developed a “Permanent Resident Filter” with the goal of determining high confidence permanent residents.
We then compared this list to the Town of Nantucket’s Street List. We identified 11,000 duplicates and 3,000 “Civis Nantucketers.” Through detailed demographic estimation methods it was estimated 3,200 children are permanent residents of Nantucket.
The effective population uses trip level data from ferries, daily airline estimates, and private transportation estimates of people arriving by boat and planes of their own. By aggregating all of these resources, we were able to estimate population on a daily basis.