[OESY]

Good stats, but beware. Doors and ceilings could be downsized for heat conservation reasons (and windows and frontage for tax reasons). I wonder if a thousand years from now, historians will conclude our average height was 4'8" based on the height of shower heads at cheap motels.

[Prost1]

My family comes from Russia. Arrived between 1900-1912 and settled mostly in Fresno. Height was from 4'10" to 5'6" women to men. Average around 5' to 5'3"...I don't know of many immigrants who were much taller, although today, the children, grandchildren and great grandchildren are giants compared to them.
People build according to their size and needs. Door frames, beds, etc or igloos....