Here is a list of US woodpeckers:
Ivory billed
pileated
red cockaded
red headed
red bellied
downy
hairy
gila
acorn
flicker
white headed
black backed
three toed
red breasted sapsucker
yellow breasted sapsucker
Williamson's sapsucker
red naped sapsucker
Nuttal's woodpecker
golden fronted woodpecker
Strickland's woodpecker
ladder backed
Lewis' woodpecker
*Worldwide, woodpeckers constitute 212 species.