Apartments For Rent Killingworth Ct . One of ten apartments at 257 route 80 located just east of the route 80/81 rotary in killingworth. Choose from 409 apartments for rent in killingworth, connecticut by comparing verified ratings, reviews, photos, videos,. 136 Route 148, Killingworth, CT 06419 Trulia from www.trulia.com Compare rentals, see map views and save your favorite apartments. View more property details, sales history and zestimate data on zillow. Property to rent in killingworth, newcastle upon tyne.