👉 A postcode is a series of digits or letters that are used to identify a specific geographic location in the United Kingdom. It is often referred to as a "street address" and is used by postal services to determine where a parcel or package should be delivered. The structure of a postcode can vary depending on the region, but it typically consists of three parts: a series of numbers followed by letters (or sometimes a combination of both) that are arranged in alphabetical order.