When you change your address with the U.S. Postal Service, it's important to include the names of everyone moving with you. If you only include your name, your spouse's mail won't be forwarded. Depending on your personal situation, it could get a little more complicated.
If some members of your household with the same last name are moving with you, but others are staying, fill out a separate change of address form for each person moving using the "individual" option. Do likewise if members of the household with different last names are moving with you, but others are staying. However, if your entire family is moving to the same address and each member has the same last name, it's a little easier. Just fill out one form using the "family" option and everyone will get his or her mail.