The most recent NASFiCs have been as follows:

Year	Convention	Location
2020	Columbus NASFiC 2020	Columbus, Ohio ONLINE ONLY
2019	SpikeCon	Layton, Utah
2017	NorthAmeriCon ’17	San Juan, Puerto Rico
2014	Detcon 1	Detroit, Michigan
2010	Reconstruction	Raleigh, North Carolina
2007	Archon 31/TuckerCon	St. Louis, Missouri
2005	CascadiaCon	SeaTac, Washington
1999	Conucopia	Anaheim, California

A comprehensive list of past NASFiCs can be found here.