Its estimated 2015 population of 72,292 made it the second - largest city in Stanislaus County after Modesto .
Turlock is a city in Stanislaus County , California , United States .
Turlock 's estimated 2015 population of 72,292 made it the second - largest city Stanislaus County   County after Modesto .
Turlock is a city in Stanislaus County , California , United States .