More and more developers and tenants have been calling retail broker Deena Zimmerman to ask about opportunities in a resurgent submarket: River North. 
The sector is on a roll in the neighborhood, which boasts a lower vacancy rate than the city’s darling, Fulton Market. Buoyed by a diversified mix of asset classes that drive foot traffic around the clock, River North has fared better than other areas of a central business district dominated by office buildings that have struggled as workplace visitation has fallen, Chicago retail professionals told Bisnow. 
“I have retailers who are now laser-focused on River North where, I swear to…