Breeds from southern Canada (eastern Saskatchewan, central Manitoba, southern Ontario and southern Quebec) southern in USA to northern Kentucky, eastern Pennsylvania and New York. Non-breeding winters from eastern USA (Virginia) south through coastal states to Texas and north-eastern Mexico. Considered by some authors to be a subspecies of Grass Wren (Cistothorus platensis).
 
Population
Estimated population is 6,500,000 (2010).
Sedge Wren (Cistothorus) [XC425128]
by Jonathon Jongsma from Embarrass, St. Louis County, Minnesota, United States (song)
Sedge Wren (Cistothorus stellaris) [XC105741]
by Andrew Spencer from Battelle Darby Metro Park--Cutoff trail from Darby Creek Trail past barn to Darby Creek Rd., United States (song)
Subspecies
No subspecies.
Considered by some authors to be a subspecies of Grass Wren (Cistothorus platensis).