What does Arch mean?
Arch \a-rch, ar-ch\ as a boys' name is of Old French and Old German derivation, and the name Arch means "genuine, bold, brave". Arch is a variation of Archibald (Old French, Old German). Somewhat uncommonly used as a birth name.
Arch is a rare given name for men but a very popular surname for both adults and children (#20407 out of 88799, Top 23%). (2000 U.S. Census)
Shown below is the birth name popularity of Arch for boys. Arch reached its apex position of #265 in the U.S. then, but is not in the Top 1000 at the moment. (2014 Birth Statistics)
Below is a graphed analysis of the popularity of the boy name Arch and related names. Archer (#303 a year ago), Archibald and Archie are the prominent varying forms of Arch rated in the Top 1000. These boy names were at the top of their popularity during 1880-1889 and are now much less popular, with the versions Arch, Archibald and Archie becoming less in vogue. Archer (#303) is the most trendy birth name among these, and there is a rekindling in baby name usage for this name. (2014 Birth Statistics)