CR0 is the postcode for Croydon in the London Borough of Croydon in South London.

CR0 covers the communities of West Croydon, Addiscombe, Shirley, Addington, New Addington and Waddon in addition to Croydon.

CR9 covers the same area and is used for individual postcodes for large users.

The post town for these postcodes is CROYDON.

See this article for an explanation of why and how codes CR0 and CR9 differ from all others.