Breeds in Canada from south-central Mackenzie (in Northwest Territories), Peace R lowlands of north-eastern British Columbia and throughout lowlands of Alberta east to central Manitoba, northern and eastern Ontario and locally southern Quebec, southern in USA to north-western Montana, northern South Dakota, southern Minnesota and northern Michigan. Non-breeding southern USA from central Kansas, north-western Arkansas, southern Georgia and coastal South Carolina south to Gulf Coast (Texas east to western Florida).
 
Population
Estimated population is 3,000,000 (2010).
LeConte's Sparrow (Ammospiza leconteii) [XC103078]
by Ian Cruickshank from McGregor Marsh, Aitkin Co., Minnesota, United States (call)
LeConte's Sparrow (Ammospiza leconteii) [XC187243]
by Terry Davis from Rocky View County, Division No. 6, Alberta, Canada (song)
Subspecies
No subspecies.
Genus, as currently delimited, is probably polyphyletic. Molecular studies suggest that present species is in a clade with Seaside Sparrow (Ammospiza maritima), Nelson's Sparrow (Ammospiza nelsoni) and Sharp-tailed Sparrow (Ammospiza caudacuta). Has hybridized with Nelson's Sparrow (Ammospiza nelsoni).