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).
Laguna Niguel is located in south California. Laguna Niguel is part of Orange County. Laguna Niguel has 14.83 square miles of land area and 0.05 square miles of water area. As of 2010, the total Laguna Niguel population is 62,979, which has grown 1.76% since 2000. The population growth rate is much lower than the state average rate of 9.99% and is much lower than the national average rate of 9.71%.