Parish Church, Gosforth. The well preserved viking cross is visible to the left of the wicket gate. – Nigel Monckton, CC BY-SA 2.0 – Wikimedia Commons Gosforth is located in Cumberland. About 1,142 people live here (as of 2021). Between 2011 and 2021, the population fell from 1,396 to 1,142. Gosforth has around 84 streets. The postal codes are CA20. The dialling code is 019467. Gosforth is village and civil parish in Cumbria, England, UK. Among other things, Gosforth has public transport and cafés. For more information, see gosforthvillage.net.