Daventry Postcode, Information and map for the Daventry Postcode. Find postcode by address or by point doing click on map. Daventry postcode areas Daventry has 1 postcode area. For more details about a particular street or postcode in Daventry, browse through a postcode area to find more information about postcodes in Daventry. Postcodes in Daventry, Northamptonshire, England 4 Postcode areas in Daventry, Northamptonshire. The area contains approximately 15,594 households with a population of about 37,441 (2011 census). These cover most of Northamptonshire (including Northampton, Kettering, Wellingborough, Corby, Brackley, Daventry, Rushden and Towcester), plus very small parts of Bedfordshire, Buckinghamshire, Leicestershire, Oxfordshire and Warwickshire. Drag to change point. Daventry (/ ˈdævəntri / DAV-ən-tree, historically / ˈdeɪntri / DAYN-tree) is a market town and civil parish in West Northamptonshire, England, close to Northamptonshire 's border with Warwickshire. Where is Daventry in NN11? Daventry is situated towards the northernmost extremity of the NN11 postcode district, and roughly centrally between the easternmost and westernmost extremities of the NN11 postcode district. 9gfhq, gme32, leg, 1mjz, 0yas, te, ajqij, wxqqv, on4al, r98n,