From Dynamique de l'évolution humaine:
[Article in French]
Pineau JC, Delamarche P, Bozinovic S.
Dynamique de l'évolution humaine, CNRS, UPR 2147, 44, rue de l'Amiral-Mouchez, 75014 Paris, France. firstname.lastname@example.org
This study contributes to an update of average heights among European populations. Our investigation covering 2705 boys and 2842 girls aged 17 years, shows that, contrary to the general belief, adolescents of the Dinaric Alps are, on average, the tallest in Europe. With an average height of 185,6 cm [6'-1.1"], they are taller than Dutch adolescents (184 cm on average [6'-0.4"]).
In the U.S. in 2003-2005, the government's NHANES study (conducted to help the clothing industry get the most common measurements), barefooted white men ages 20-39 averaged 5'-10.4", black men 5'-10.0", and Hispanic men 5'-7.1".
Above all, the density of very tall subjects appears to be characteristic of the Dinaric Alps, since 28% measure 190 cm [6'-2.8"] or more in height, as opposed to only 20% in Holland and 1.5% in France.
NHANES found the 95th percentile for American white men age 20-39 at 6'-2.9" and for black men 20-39 at 6'-3.1".
Although our information is not complete, adolescent girls in the Dinaric Alps, with an average height of 171 cm [5'-7.3"] come a close second to girls in Holland.
This isn't a new discovery, by the way. Physical Anthropologist Carleton Coon's 1950 book on the Gheg tribe of Albania was entitled The Mountain of Giants.
The other area that traditionally produces a lot of basketball players is the Baltic, such as Lithuania.