Check out: http://factfinder2.census.gov < You can search by city, zip, etc.
There are about 17,000 people, 54.9 median age in 33408.
North Palm Beach is a diverse area with singles, families, empty nesters, snow birds and retirees. There are single family homes, gated communities, condos, townhomes, waterfront, etc. so there are lots of living options.