In a 55+ community, at least one person needs to be 55 years of age or better. There is a minimum age for the other residents as well, usually 45 or so. Children may visit, but typically for no more than two weeks. You will notice that there are only 10 true senior communities in San Diego. This comes as a surprise to many who think that California is very much like Florida. It isn't. There is more of a mix of ages here, unlike Florida, where you'll find dozens of gated senior communities next door to each other. 

Senior oriented communities are areas where there is no age restriction, but have a very high percentage of seniors living there. These areas are typically around golf courses, or far away from schools. 

The choice of whether to live in a 55+ community is a personal one. Senior communities tend to have all kinds of clubs, activities, group travel opportunities, and recreational amenities. Outside of the 55+ communities, you're on your own, but you'll see more young families and children playing in the neighborhood. Some people tell me they like that, it keeps them feeling younger, while others tell me it's a great relief to be away from screaming kids and barking dogs. So it all depends on your point of view and what kind of lifestyle you picture yourself living. In San Diego, we have something for everyone!