This is a short post to refer you to a site I found on the AARP website called the Livability Index. It was developed by the AARP Public Policy Institute as a "web-based tool to measure community livability."
You can search the Index by zip code or the name of your town to find an overall score. The total score is an average of scores for seven categories:
housing, neighborhood, transportation, environment, health, engagement,
and opportunity. You can click on each category to see what criteria they use.
Presumably, the livability quotient is relevant for everyone; but there's extra focus on older people. For example, the housing category is based on affordability, but also on availability of multi-family housing and accessibility in terms of wider doors and hallways and fewer steps.
My own town scores a 51, which is okay, not great. It rates low on housing (27) and transportation (31) -- housing is expensive and geared toward families not retired people, and we have no public transportation other than a train that's a 15-minute drive away. But my community scores high on health (81) and engagement (63), and reasonably well on environment (53).
Even if two communities score at the same level on an overall basis,
they may show very different profiles. My sister lives in Florida. Her zip code also rates a 51; but housing and transportation in her area score higher while health comes in lower.
So, I guess you have pick out what's important to you, and be happy where you are. But even if you're not thinking about moving, it could be fun to check out the Livability Index for your own community -- or those of family and friends -- to see how they rate on various measures.