well done....gives people a real quick look at what density is and isn't!
The images below pretty much captures the type of neighborhood/housing density I personally prefer and was looking for when I first came to town:
Lakeview - Chicago
The Fan - Richmond
Midtown - Detroit (built density is there but half of the buildings are still empty)Roughly 20k to 30k residents per square mile. A far cry from the +100k packing parts of NYC or the +50k living in downtown Miami highrise condos, but significantly more packed than what's currently available in Jax. Pedestrian scale, with a "little" yard/courtyard space, in a housing type that has no one living on top or below you.
Looking at the local landscape, it seems that the erased neighborhoods (Brooklyn, LaVilla, Sugar Hill, Cathedral District, etc.) have future potential for infill to reach such density levels (I suspect they had such density levels prior to 1950). If places like Richmond and Norfolk can maintain small pockets of such density, Jax should be able too. Probably not in my lifetime (or at least where I'm of age to enjoy it), but at some point in the distant future.