[atdrummond]

Richmond is also a city, hence why people usually say Richmond District if they want to explicitly refer to the NW District of SF when discussing the city and the surrounding area.

Poster you’re replying to isn’t wrong, just as you aren’t.

[viscanti]

They were providing a list of neighborhoods in SF. It wasn't ambiguous and would have been well understood by anyone familiar enough with the city to comment on the state of SF. There's also a Richmond Virginia (among many other Richmonds), none would make sense in the context of a list of SF neighborhoods.