AWS GovCloud (US)
User Guide

Resource Limits

By default, AWS maintains limits for certain resources in your AWS GovCloud (US) account. For example, accounts have a limit on the number of Amazon EC2 instances that can be launched. You can see your current limits and request limit increases on the Limits Page in the Amazon EC2 console. When you request a limit increase, specify your AWS GovCloud (US) account ID and select the AWS GovCloud (US) Region from the region drop-down list.

For more information, see AWS Service Limits.