The group said the party will take place in two stages, an all-ages "playtime" party while the fort is being built during the day, and a 21-and-over event at night.
"The structure will be comprised of geodesic domes connected by blanket tunnels, hidden rooms, and unique themes," the group's event posting on Facebook states. "Each dome is full of surprises."
The organizers said they are hoping to surpass the current Guinness World Record, a 3,303.4 square foot blanket fort, as well as a 4,000 square foot fort constructed by a group of YouTubers.
People planning to attend the party are being asked to bring a clean blanket, which will be donated to a local homeless shelter after the event.