Southwest Idaho Cities

41 cities

City
Rank
County
2025 Pop. ↓
Boise City1Ada County235,012
Meridian2Ada County145,039
Nampa3Canyon County122,906
Caldwell4Canyon County73,466
Eagle5Ada County33,285
Kuna6Ada County30,427
Star7Ada County19,590
Mountain Home8Elmore County17,139
Garden City9Ada County13,110
Middleton10Canyon County11,987
Emmett11Gem County9,006
Payette12Payette County8,932
Fruitland13Payette County7,392
Weiser14Washington County6,320
Hidden Springs15Ada County3,910
Homedale16Owyhee County3,300
Mountain Home AFB17Elmore County3,170
Parma18Canyon County2,185
Wilder19Canyon County1,745
Avimor20Ada County1,642
New Plymouth21Payette County1,600
Glenns Ferry22Elmore County1,318
Marsing23Owyhee County1,273
Robie Creek24Ada County1,256
Horseshoe Bend25Boise County909
Greenleaf26Canyon County776
Letha27Gem County715
Notus28Canyon County601
Melba29Canyon County598
Idaho City30Boise County569
Grand View31Owyhee County478
Garden Valley32Boise County413
Cambridge33Washington County364
Hammett34Elmore County316
Midvale35Washington County229
Murphy36Owyhee County215
Crouch37Boise County189
Bruneau38Owyhee County51
Placerville39Boise County49
Lowman40Boise County27
Banks41Boise County6

About Southwest Idaho

Ada County, Canyon County, Elmore County, Payette County, Gem County, Owyhee County, Washington County, and Boise County are the counties generally considered part of Southwest Idaho.