Delaware City Refinery

New Castle County is the northernmost of the three counties of the U.S. state of Delaware (New Castle, Kent, and Sussex). As of the 2020 census, the population was 570,719, making it the most populous county in Delaware, with nearly 60% of the state's population of 989,948. The county seat is Wilmington, which is also the state's most populous city. New Castle County is included in the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area. The county is named after William Cavendish, 1st Duke of Newcastle (c. 1593–1676). New Castle County has the highest population and population density of any Delaware county, and it is the smallest county in the state by area. It has more people than the other two counties, Kent and Sussex, combined. It is also the most economically developed of the three.

Fairview is a historic home located near Delaware City, New Castle County, Delaware. It was built in 1822 as a two-story, five-bay rectangular brick dwelling with a Georgian style, center hall plan. It was modified in 1880 by architect Frank Furness to add a shingled third story, four notable corbeled chimneys, and an addition.It was listed on the National Register of Historic Places in 1982.

Wrangle Hill is an unincorporated community in New Castle County, Delaware, United States. Wrangle Hill is located at the intersection of U.S. Route 13, Delaware Route 7, and Delaware Route 72 west of Delaware City. The community was named after a feud between two early families.

Starl House was a historic home located at St. Georges, New Castle County, Delaware. It was built before 1822, and was a 2+1⁄2-story, three-bay, brick dwelling with a gable roof and corbelled brick cornice. The house had a side hall plan and was in the Late Federal style.It was added to the National Register of Historic Places in 1982. It was demolished before 1992.

The Ethel S. Roy House is a historic building identified simply as Vernacular Frame House when listed on the National Register of Historic Places in 1982 as part of the Red Lion Hundred Multiple Resource Area.The house was built c. 1868 by a former slave and was singled out for historic preservation in an effort to counteract the bias that only homes of the affluent are recognized as being historically significant. It represents a working man's home in a labor-intensive agricultural society and has had few alterations since it was built. Red Lion Hundred is an area of New Castle County, Delaware roughly equivalent in size and function to a township. It was settled in the seventeenth century, with the soil being ruined by intensive tobacco cultivation by 1800. A "peach boom" lasted from about 1830 to 1870 until a blight called "the yellows" destroyed the peach crops. Slavery provided labor in the area until the American Civil War. The Roy House was built soon after the Civil War by a former slave, whose granddaughter lived in the house until at least 1979. It is located just north of the unincorporated village of Saint Georges, Delaware, on a 150-foot square plot of land once owned by the locally prominent Sutton family. It is a wooden frame two-story, two-bay house with gabled roof which had a small enclosed front porch. Photographs taken in 1970 or 1979 show a simple building with wooden siding, a tin roof, six-over-six windows, and an interior chimney on the south end. The single decorative item appears to be a "gothic" attic window with a "pointed arch" above a rectangular window. A photograph from 2011 shows that the roof, siding and windows have been recently replaced, the porch opened up, and the chimney removed.

Linden Hill is a historic home located at St. Georges, New Castle County, Delaware. It was built in 1836, and is a 2+1⁄2-story, five bay brick dwelling with a center hall plan. It has long kitchen wing set at a right angle to the main house. The front facade features a three bay porch with a hipped roof. The interior features Greek Revival style details. Also on the property are a contributing frame barn and shed.It was added to the National Register of Historic Places in 1982.

Sutton House is a historic home located at St. Georges, New Castle County, Delaware. The original section was built about 1794, with the main section completed about 1815. It is a 2+1⁄2-story, three bay brick dwelling with a lower rear wing and featuring a gable roof. The front façade features a semicircular fanlight over the main entrance and there is a two-story porch on the rear wing.The house was built for Dr. James M. Sutton, whose family continued to live there for generations. It was added to the National Register of Historic Places in 1973. It is located in the North Saint Georges Historic District.

North Saint Georges Historic District is a national historic district located at St. Georges, New Castle County, Delaware. It encompasses 69 contributing buildings and 3 contributing objects in the village of North St. Georges. The buildings date between about 1719 and 1942 and are primarily residential with a few institutional and commercial buildings. Notable buildings include the Methodist Church, the St. Georges Historical Society Building, Commodore MacDonough School (1923), Gam's Store (c. 1855), the former African-American school (now the post office, c. 1925), Odd Fellows Lodge (1875), and the Nuttall House. Located in the district are the separately listed St. Georges Presbyterian Church and Sutton House.It was added to the National Register of Historic Places in 1995.

Chelsea is a historic home located in Delaware City, New Castle County, Delaware. It was built in 1848 by Thomas Clark, and is a three-story, three-bay-square brick block with a low, almost flat, hipped roof surmounted by a widow's walk. It is in a regional variation of the Italianate / Greek Revival style. It has a low, one-story wing at the east side, a wide, one-story glass-enclosed front porch and a large, two-story addition to the rear of the house.It was listed on the National Register of Historic Places in 1982.

Saint Georges is an unincorporated town and former municipality situated on the Chesapeake and Delaware Canal in New Castle County, Delaware, United States, approximately midway between the Delaware River and Chesapeake Bay.

St. Georges Presbyterian Church is a historic Presbyterian church located on Main Street in St. Georges, New Castle County, Delaware. It was built in 1844, and is a one-story, brick, temple form, Greek Revival style building with a frame steeple. The main block measures 43 feet, 6 inches wide by 77 feet, 8 inches long, and sits on an uncoursed fieldstone foundation. The roof is supported by a Town lattice truss.It was added to the National Register of Historic Places in 1984. It is located in the North Saint Georges Historic District.

The St. Georges Bridge is a steel tied arch bridge that carries U.S. Route 13 (US 13) across the Chesapeake & Delaware Canal in St. Georges, Delaware. Built by the U.S. Army Corps of Engineers and opened in 1942 as a high-level crossing, the bridge was the first four-lane, high-level crossing to span the canal. It replaced a previous vertical lift bridge which was damaged when a German merchant ship collided with it.