Argentina, Bolivia, Brazil, Paraguay, Peru, Uruguay (B).
South-eastern Peru (Puno), central and south-eastern Bolivia (southern from Cochabamba and Santa Cruz) and south-western Brazil (south-western Mato Grosso) south to western Paraguay and northern Argentina (south to La Rioja, San Luis and Entre Ríos, east to to western Corrientes).
 
Population
Estimated population is unknown (2010).
White-fronted Woodpecker (Melanerpes cactorum) [XC6439]
by Niels Krabbe from Pousada Caiman, Miranda, MS, Brazil (call)
White-fronted Woodpecker (Melanerpes cactorum) [XC844057]
by Bernabe Lopez-Lanus from Aquidauana, MS. Road to Barra Mansa, Brazil (call, song)
Subspecies
Despite some variation in throat colour (from all white to all yellow), differences not sufficiently constant geographically to warrant recognition of any subspecies.