Schools in New Castle, Colorado, the US. Schools locations in New Castle, Colorado. Find the nearest schools locations, near you. All types of business services ATM Finance Lawyer Real estate School Travel All schools in New Castle Elk Creek Elementary School School +1 970-665-6900 804 West Main Street, New Castle, Colorado 81647 Write a review Phone Website Directions Kathryn Senor Elementary School School +1 970-625-7700 101 Alder Avenue, New Castle, Colorado 81647 Write a review Phone Website Directions