Screen Time & Sleep in Chicago: What Research Shows

A 2025 analysis by the Sleep Research Society found that adults who use phones or tablets within 60 minutes of bedtime experience a 50 percent drop in melatonin onset compared with those who power down earlier.

The finding arrives as Chicago residents report longer workdays that spill into evening hours, with many turning to streaming and social apps once they reach home in neighborhoods from Hyde Park to Wicker Park. Local sleep clinics have seen appointment volumes climb 22 percent since 2023, driven by complaints of fragmented rest rather than outright insomnia.

Northwestern Medicine Sleep Disorders Center on the Near North Side tracks these trends through intake forms that ask patients about device habits. In Logan Square, the Chicago Public Library’s monthly digital wellness sessions at the branch on Milwaukee Avenue draw steady crowds seeking practical limits on evening scrolling.

Data from the same 2025 Sleep Research Society survey showed Chicago adults average 2.7 hours of screen time after 9 p.m., a figure that tracks with a 15 percent rise in reported sleep disturbances citywide since 2022. Participants who kept phones outside the bedroom logged 47 minutes more total sleep on average.

Blue light timing and local habits

Researchers at the University of Chicago’s Center for Sleep and Circadian Biology note that the wavelength emitted by most phone and laptop screens suppresses melatonin most strongly between 10 p.m. and midnight. That window overlaps with peak usage for many commuters who check messages on the Blue Line after late shifts.

Evening classes at the Chicago Athletic Association on Michigan Avenue now include optional phone-lock stations, an experiment started last fall that staff say reduces late-night notifications among members who attend wellness talks there.

Practical steps tested in Chicago homes

Residents who switched to paper books or dimmed bedside lamps by 10 p.m. reported better sleep continuity within two weeks, according to follow-up calls from the Northwestern center. Setting device screens to night-shift mode at 8 p.m. produced smaller gains, cutting melatonin suppression by only about 20 percent in controlled tests.

Local clinicians recommend starting with one device-free hour before bed and keeping chargers outside the bedroom. Those steps require no new equipment and fit routines already common along streets like Damen Avenue where many residents walk after dinner instead of opening laptops.