California does have twice the population as Florida and a much, much larger economy.
It could just be that all the elderly Floridians sit at home in gated communities, while Californians are more likely to be going-in to work surrounded by a much larger, more dense population.
Could also be an effect of prevalence of multi-generational housing. Perhaps the elderly Floridians are more concentrated in gated community-type housing, and not living with extended family in a smaller living space.
It could just be that all the elderly Floridians sit at home in gated communities, while Californians are more likely to be going-in to work surrounded by a much larger, more dense population.
Could also be an effect of prevalence of multi-generational housing. Perhaps the elderly Floridians are more concentrated in gated community-type housing, and not living with extended family in a smaller living space.