With reports this week that 29% of American households include just one person, where are more of these single-person households located?

Living alone is much more common in large cities. Singles now make up more than 40 percent of households in Atlanta, Seattle, San Francisco, Minneapolis and Denver, according to a paper by the British historian Keith Snell. Half of all Manhattan dwellings are one-person residences. Snell identified a Midtown Census tract where 94 percent of households comprised a single person.
There are likely a lot of factors influencing these numbers in cities. This includes available jobs and economic conditions, family formation processes, cultural and entertainment opportunities, and housing options.
There are also old American narratives about where families live. How about the story about young people in the big city forming families or households, having kids, and then leaving for the suburbs? Do cities provide more opportunities for people in single-person households?
It would be interesting to see the variation in single-person households within and across American cities. Certain cities are listed above at over 40% and certain Manhattan neighborhoods are cited. Does this also mean the numbers are quite different in other New York City neighborhoods or in other American big cities?