Tracy is the second most populated city in San Joaquin CountyCaliforniaUnited States. The population was 82,922 at the 2010 census. Tracy is located inside a geographic triangle formed by Interstate 205 on the north side of the city, Interstate 5 to the east, and Interstate 580 to the southwest, this has given rise to Tracy's motto, now recorded on the city's website: "Think Inside the Triangle".[11]