(Portland, OR) -- Blue Star Donuts abruptly closed its North Mississippi Avenue and Lake Oswego shops on New Year's Day, leaving four locations in Portland. The closures aim to address rising costs and ensure the chain's long-term stability. Known for its "donuts for grown-ups," Blue Star downsized during the pandemic, filing for bankruptcy in 2020. Remaining shops include South Waterfront, Goose Hollow, Portland International Airport, and Southeast Division Street.