AWS SDK for .NET Documentation
BucketRegion Property
AmazonAmazon.S3.ModelPutBucketRequestBucketRegion Did this page help you?   Yes   No    Tell us about it...
The region locality for the bucket. Default: S3Region.US
Declaration Syntax
C#
public S3Region BucketRegion { get; set; }
Remarks
When set, this will determine where your data will reside in S3. Refer S3Region for a list of possible values.

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)