page_title: Delaware County, Pennsylvania
section_title: Geography
hierarchical_section_title: Delaware County, Pennsylvania / Geography
caption_attribution_description: English: Bartram's Covered Bridge on the NRHP since December 10, 1980, West of Newtown on Legislative Route 15098 (Goshen Road, near intersection with Boot Road) in Newtown Township, Delaware County, Pennsylvania. Extends over Crum Creek into Willistown Township in Chester County. This is an image of a place or building that is listed on the National Register of Historic Places in the United States of America. Its reference number is 80003462
context_page_description: Delaware County, colloquially referred to as Delco, is a county located in the U.S. state of Pennsylvania that borders Philadelphia. With a population of 566,747, it is the fifth most populous county in Pennsylvania, and the third smallest in area. The county was created on September 26, 1789, from part of Chester County, and named for the Delaware River.
  Its county seat is Media. Until 1850, Chester was the county seat of Delaware County and, before that, of Chester County.
  Delaware County is adjacent to the city-county of Philadelphia and is included in the Philadelphia–Camden–Wilmington, PA–NJ–DE–MD Metropolitan Statistical Area. Delaware County is the only county covered in its entirety by area codes 610 and 484.
context_section_description: According to the U.S. Census Bureau, the county has a total area of 191 square miles (490 km²), of which 184 square miles (480 km²) is land and 6.8 square miles (18 km²) (3.5%) is water. It is the third-smallest county in Pennsylvania by area.
  Delaware County is roughly diamond- or kite-shaped, with the four sides formed by the Chester County boundary to the northwest, the boundary with the state of Delaware (a portion of the "Twelve Mile Circle") to the southwest, the Delaware River (forming the border with the state of New Jersey) to the southeast, and the city of Philadelphia and Montgomery County to the east and northeast.
  The lowest point in the state of Pennsylvania is located on the Delaware River in Marcus Hook in Delaware County, where it flows out of Pennsylvania and into Delaware.  The highest point in Delaware County is 500 feet at two points southeast of Wyola in Newtown Township .
  Waterways in Delaware County generally flow in a southward direction and ultimately drain into the Delaware River.  The waterways are, from west to east: the Brandywine River (forming a portion of the county's western boundary with Chester County), Naaman's Creek, Stoney Creek, Chester Creek, Ridley Creek, Crum Creek, Muckinipates Creek, Darby Creek and Cobbs Creek (forming a portion of the county's eastern boundary with Philadelphia).  Crum Creek was dammed in 1931 near Pennsylvania Route 252 to fill Springton Lake (also known as Geist Reservoir), an approximately 391-acre (1.58 km²) drinking water reservoir maintained by Aqua America, the county's largest lake.
  The Trainer Refinery and the Port of Chester are located along the shores of the Delaware River.
caption: Bartram's Covered Bridge, built 1860 west of Newtown Square, crosses Crum Creek into Chester County.
exif: {"Image ImageDescription": "", "Image Make": "SONY", "Image Model": "DSC-H1", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "QuickTime 7.6.6", "Image DateTime": "2010:10:27 21:09:46", "Image HostComputer": "Mac OS X 10.6.4", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "284", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "72", "Thumbnail YResolution": "72", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "2400", "Thumbnail JPEGInterchangeFormatLength": "7076", "Thumbnail YCbCrPositioning": "Centered", "EXIF ExposureTime": "1/40", "EXIF FNumber": "14/5", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "64", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2010:10:27 13:31:40", "EXIF DateTimeDigitized": "2010:10:27 13:31:40", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "8", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "3", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, auto mode", "EXIF FocalLength": "6", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "2592", "EXIF ExifImageLength": "1944", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal"}