You can now manage your Amazon S3 general purpose bucket quotas in Service Quotas in the AWS GovCloud regions. Using Service Quotas, you can view the total number of buckets in an AWS account, compare that number to your bucket quota, and request a service quota increase.
You can get started using the Amazon S3 page on the Service Quotas console, AWS SDK, or AWS CLI. Service Quotas support for S3 buckets is available in the AWS GovCloud (US-West), US East (N. Virginia), and China (Beijing) AWS Regions. To learn more about using Service Quotas with S3 buckets, visit the S3 User Guide.
Source:: Amazon AWS