Oh yeah, I use that. But not really as a unit of measurement per se, more just “Until you hit the next cross street”, rather than any actual measurement. And it’s relatively recent - for the longest time I’ve been using “Streets” instead, ie, go four streets down then hang a left.
I’ve been “Typing” for a long time mostly because I opened up wikipedia to see if a block had an actual number value attached to it. The answer is annoyingly non-specific!