Lee County, which encompasses Fort Myers, accounts for most of the fatalities.
The remnants of Ian are charging up the East Coast on Saturday after making landfall as a Category 1 hurricane in South Carolina on Friday afternoon.
The monster storm made its first U.S. landfall on Wednesday on Florida's west coast as a powerful Category 4 hurricane, shredding homes with ferocious winds topping 150 mph. Florida's death toll has climbed to at least 81, according to information from local officials.
As Ian moves north, more than 161,000 customers in North Carolina and more than 187,000 customers in South Carolina are without power.
More than 1.68 million people are still without power in Florida.
Ian has become a post-tropical cyclone, but winds remain at 70 mph and the "dangerous storm surge, flash flooding and high wind threat continues," the National Hurricane Center said in its latest bulletin.
Hurricane warning and watch areas have now been discontinued, though a tropical storm warning has been issued from Edisto Beach, South Carolina, to Cape Fear, North Carolina.
Floridian Hanna-Kay Williams started to experience contractions late Tuesday evening, just as the Orlando area was experiencing signs of the hurricane to come.
So she braved the strong winds and potentially dangerous flooding to get to a hospital after she went into labor during Hurricane Ian.
"I was going in and out because the car was swaying in the wind and the rain was intense, but my fiancé is a great driver so I was in great hands," Williams, 22, of Melbourne, told ABC News.
Read more about the account here.
-ABC News' Mary Kekatos
Hurricane Ian made landfall in South Carolina Friday afternoon as a powerful Category 1 storm, bringing damaging winds and life-threatening storm surge.
Ian made landfall near Georgetown. The storm is expected to move further inland across eastern South Carolina and central North Carolina through the night and into Saturday.
After making landfall, it is expected to weaken and rapidly transition into a post-tropical cyclone overnight. It is forecast to bring heavy rain to North Carolina and Virginia and up through the Northeast on Saturday.
Rainfall rates have been up to 2 inches per hour with heavy rain bands in the Charleston area. Wind gusts up to 92 mph have been recorded.
