How many hairs are there on an average persons head?

There are different claims on how many strands of hair you can find on
an average head, but the consensus seems to be between
100.000-150.000, some estimates going up to 200.000.  Obviously, a
person with hair loss will have dramatically lower numbers than
others.

http://htg.addr.com/didyou.htm claim that "the number of strands of
hair on a human head varies with color: BLONDE - 140,000 strands;
BROWN - 110,000 strands; BLACK - 108,000 strands; RED - 90,000
strands".

http://www.bibleline.org/hair.html supports this: "Some years a go, a
German scientist counted the hairs on different heads. He found that
they vary in number, depending seemingly upon the color.  There are
more on a head with black hair than on a head with red hair, more on
brown than black, more on blonde than brown. The black-haired woman
has about 110,000 hairs on her head, and a blonde-haired woman has
about 140,000."

Search terms used on Google:
"strands of hair" head number OR quantity OR count OR "how many"
hair "on a head" number OR quantity OR count OR "how many"

GREAT Answer.  Thank you fro being so thorough!