Residential sales plunged across Miami-Dade, Broward and Palm Beach counties in the second quarter, following a first quarter in which home sales were largely spared from the effects of coronavirus, according to Miller Samuel’s latest reports.

Among the areas hardest hit in South Florida, Manalapan, a high-end market south of Palm Beach, experienced a 54 percent annual drop in closed sales in the second quarter. The condo market in Coral Gables saw the biggest annual decline of all, at more than ...