Current Worldcons
2017 Worldcon in Helsinki, Finland
The above Worldcons have been selected. You can buy memberships from their websites.
Because the 2017 Worldcon is outside of North America, there will be a NASFiC in 2017. See the NASFiC web site for additional information.
Upcoming Worldcon Bids
The following groups are bidding to hold the 2019 Worldcon.
A full list of future Worldcon bids can be found here.