You can't 'unlink' the iPhone from your iTunes account (unless you change the iTunes account you're logged into on the computer, then sync, but ion that case you won't be able to use the apps you have already bought).
PEOPLE OVERVIEW. The 2016 Laguna Hills, California, population is 31,748. There are 4,810 people per square mile (population density).
With 65,773 people, Yuba City is the 133rd most populated city in the state of California out of 1,497 cities. But watch out, Yuba City, because Laguna Niguel with 65,448 people and San Clemente with 65,326 people are right behind you.