It takes a couple years to compile the data, so all this is a few years behind 'right now':
95% or
99% of bicycles sold in the USA are imported. About
94% of bicycles imported into the USA come from either China or Taiwan.
USA domestic bicycle manufacturing is either 'boutique' craft makers, specialty firms like Worksman (industrial) and BikeFriday (travel) or a small effort by Kent/Bicycle Corporation of America to assemble imported parts onto imported frames.
Unlike the USA,
in the EU roughly 2/3rds of bicycles sold are produced in member countries.
Bicycles manufactured in China and imported into the EU are burdened with a
48.5% 'dumping' tariff and a 14% import tariff.