Main Street in Allan, Saskatchewan, Canada. The building in the foreground is the combined Town Office and Rural Municipality Office. – Canadian2006, CC BY-SA 3.0 – Wikimedia Commons Allan is located in Saskatchewan. Its area extends over around 1.8 square kilometres. Allan has around 43 streets. The region was founded in the year 1904. The postal codes are S0K 0C0. Allan is town in Saskatchewan, Canada. Among other things, Allan has hotels and supermarkets. For more information, see www.allan.ca.