Places
- Westfield Bay City, a shopping center located in Geelong, Victoria
- Bay City, Metro Manila, an area in Metro Manila, Philippines created through land reclamation
- Bay City, Pope County, Illinois
- Bay City, Michigan; Bay City Town Center, a shopping mall in Bay City, Michigan
- Bay City, Oregon
- Bay City, Texas
- Bay City, Washington
- Bay City, Wisconsin
- A nickname for San Francisco
- A nickname for Santa Monica, California
- A nickname for Hamilton, Ontario
- Bay City (TV series), a 1993 Australian children's television show set in Bay City
- Bay City, a fictional midwestern town in the NBC soap opera Another World
- Bay City, a fictional town in the American television series Cobra
- Bay City, a place visited by Crypto in Destroy All Humans! 2, a parody of San Francisco
- Bay City, California, a community featured in the 1970s Starsky & Hutch television series and film
- Bay City, California, the location of the team in the 1970s minor-league baseball-themed series Bay City Blues
- Bay City, a large urban area built over historic San Francisco in the Netflix series Altered Carbon
- Bay City, a fictional town in the television series Renegade
- Bay City, California, a pseudonym used by Raymond Chandler in several short stories and novels; see Raymond Chandler bibliography
- Bay City, California, a name used for Los Angeles in the 2022 film Marlowe
- Bay City, California, a community mentioned in "Exit Prentiss Carr" (the sixth episode of the first season) and "The Girl in the Bay City Boys Club" (the thirteenth episode of season two) of The Rockford Files