AWS Regions 2019

Most AWS resources are either Region-specific or Availability Zone-specific. You can’t do anything in the AWS without choosing a region. Some of the factors to consider when choosing a Region are Latency and Proximity, Cost, Service availability, Number of Availability Zones etc.

There are currently 22 Regions and 69 Availability Zones, with 3 Regions and 9 Availability Zones planned (at the time of publishing this article August 16, 2019). The largest AWS region, us-east-1, has six zones.

List of AWS availability zones for each AWS region

 

Region Code 

Region Name 

Availability Zones 

us-east-1 

N. Virginia 

us-east-1a 
us-east-1b 
us-east-1c 
us-east-1d 
us-east-1e 
us-east-1f 

us-east-2 

Ohio 

us-east-2a 
us-east-2b 
us-east-2c 

us-west-1 

N. California 

us-west-1a 
us-west-1b 
us-west-1c 

us-west-2 

Oregon 

us-west-2a 
us-west-2b 
us-west-2c 
us-west-2d 

us-gov-west-1 

US GovCloud West 

us-gov-west-1a 
us-gov-west-1b 
us-gov-west-1c 

us-gov-east-1 

US GovCloud East 

us-gov-east-1a 
us-gov-east-1b 
us-gov-east-1c 

ca-central-1 

Canada 

ca-central-1a 
ca-central-1b 

eu-north-1 

Stockholm 

eu-north-1a 
eu-north-1b 
eu-north-1c 

eu-west-1 

Ireland 

eu-west-1a 
eu-west-1b 
eu-west-1c 

eu-west-2 

London 

eu-west-2a 
eu-west-2b 
eu-west-2c 

eu-west-3 

Paris 

eu-west-3a 
eu-west-3b 
eu-west-3c 

eu-central-1 

Frankfurt 

eu-central-1a 
eu-central-1b 
eu-central-1c 

ap-northeast-1 

Tokyo 

ap-northeast-1a 
ap-northeast-1b 
ap-northeast-1c 
ap-northeast-1d 

ap-northeast-2 

Seoul 

ap-northeast-2a  

ap-northeast-2b  

ap-northeast-2c 

ap-northeast-3 

Osaka 

ap-northeast-3a 

ap-southeast-1 

Singapore 

ap-southeast-1a 
ap-southeast-1b 
ap-southeast-1c 

ap-southeast-2 

Sydney 

ap-southeast-2a 
ap-southeast-2b 
ap-southeast-2c 

ap-east-1 

Hong Kong 

ap-east-1a 
ap-east-1b 
ap-east-1c 

ap-south-1 

Mumbai 

ap-south-1a 
ap-south-1b 
ap-south-1c 

sa-east-1 

Sao Paulo 

sa-east-1a 
sa-east-1b 
sa-east-1c 

cn-north-1 

Bejing 

cn-north-1a 
cn-north-1b 

cn-northwest-1 

Ningxia 

cn-northwest-1a 
cn-northwest-1b 
cn-northwest-1c 

Availability Zones are always referenced by their Code Name, which is defined by the AZs Region Code Name that the AZ belongs to, followed by a letter. 

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