UpdatedTue, Jan 19, 2021 at 1:29 pm CT Replies(2) Illinois's Coronavirus Region 10, which includes the Glencoe area, has been given the green light to enter the less restrictive Phase 4, Tier 2. (Shutterstock) GLENCOE, IL — Illinois's Coronavirus Region 10, the area including suburban Cook County, has been placed in the less restrictive Tier 2 of the state's COVID-19 mitigation plan. The new tier allows for gatherings of groups of up to 10 people and permits the re-opening of cultural institutions and gaming centers or casinos. Gov. J. B. Pritzker announced the move in a Facebook post on Monday, saying it was made possible by a new surge staffing program that allows the state to increase hospital capacity. All told, eight regions moved into less restrictive tiers on Monday.