Mexico, in two disjunct populations separated by unsuitable habitat: in west, from south-eastern Sonora south to northern Michoacán and western México; in east, from south-western Tamaulipas south to Hidalgo.
 
Population
Estimated population is 50,000 - 499,999 (2010).
Spotted Wren (Campylorhynchus) [XC352147]
by Richard E. Webster from Reserva de la Chara Pinta (Tufted Jay Preserve), Sinaloa, Mexico (song)
Spotted Wren (Campylorhynchus) [XC265982]
by Andrew Spencer from Cerro La Bufa, San Sebasti\u00e1n del Oeste, Jalisco, Mexico (call, song)
Subspecies
No subspecies.
Sometimes treated as conspecific with Boucard's Wren (Campylorhynchus jocosus), but the two are quite distinct in appearance and probably occupy slightly different ecological niches. Considerable individual variation in some characters (e.g. degree of spotting on underparts), but differences appear insufficiently constant to warrant separation of distinct subspecies.