I occasionally have speculated that our aging society would lead to increased transit ridership, as seniors lost the ability to drive. But I recently discovered that seniors are actually less likely to use public transit than the general public. One study by the American Public Transit Association showed that 6.7% of transit riders are over 65 (as opposed to 12.4% of all Americans).(1) The oldest Americans are even more underrepresented on America's buses and trains: only 1.5% of transit riders are over 80, about half their share of the population (2). The only other age group that is underrepresented on public transit is Americans under 18.
A few months ago, I was talking to a faculty colleague who lives in a part of Jacksonville even more sprawl-bound where I live, an area about a mile or so from the nearest bus stop and with a single-digit Walkscore. He said Jacksonville was "safe and clean." I was a little surprised: "clean" is one word I would never* use to describe Jacksonville. When I walk down the sidewalks of San Jose Boulevard, I notice litter aplenty - and from what I know of Beach Boulevard (the grim commercial strip near my colleague's house) I doubt that it is much better.