Southwest Iowa is in United States of America.
This region includes the counties of Harrison, Shelby, Audubon, Pottawattamie, Cass, Adair, Mills, Montgomery, Adams, Fremont, Page, and Taylor.
The biggest city in the area is Council Bluffs in Pottawattamie County, across from Omaha on the eastern edge of Nebraska.
If you fly into this region, you may want to fly into Omaha, which is just across the border to the west.
If you're driving, Interstate 29 runs along the western border of the state, and Interstate 80 runs east and west through this region.