Weide Army Airfield

The 1945 Edgewood Arsenal explosion killed twelve munitions workers and injured more than fifty on May 25, 1945. Building 509 at Edgewood Arsenal in Harford County, Maryland was a production facility for the assembly of phosphorus igniter assemblies for incendiary bombs, employing a female staff of about 135 assemblers. Nine workers, of whom eight were African-American, were killed in the initial blast, and three more died of their injuries.

The Presbury Meetinghouse is a historic Methodist church located at Aberdeen Proving Ground, Harford County, Maryland, United States. The original portion of the building is a two-story brick structure and was built about 1720. It is approximately 40.5 feet by 20.25 feet. The building consists of a central hall with a room on either side on both floors. It is frequently mentioned in journals of early Methodist preachers and was the site of 14 visits for preaching and overnight rest by Bishop Francis Asbury between 1772 and 1777.The Presbury Meetinghouse was listed on the National Register of Historic Places in 1974.

The Edgewood Chemical Activity (abbreviated ECA) was a U.S. Army site located in Edgewood, Maryland that stored chemical weapons. Its construction was started by Ordnance Corps in November 1917 and completed in less than a year. The arsenal was to employ about 10,000 civilian and military personnel in fabrication of chemical weapons and filling gas shells with phosgene, chlorpicrin, chlorine and mustard gas. Since 1941, the U.S. Army stored approximately five percent of the nation's original chemical agent in steel ton containers, at the Edgewood Area of Aberdeen Proving Ground.

Gunpowder Meetinghouse is a historic Methodist church located at Aberdeen Proving Ground, Harford County, Maryland. It is a one-room brick structure that may date to 1773.It was listed on the National Register of Historic Places in 1974.

Edgewood station is a passenger rail station on the Northeast Corridor in the unincorporated community of Edgewood, Maryland, served by the MARC Penn Line. Edgewood station serves the southern terminus of Maryland Route 755 which terminates at an entrance to the Aberdeen Proving Ground. The station has two side platforms with a small station building north of the tracks. Parking is located on either side of the station area.

Edgewood is an unincorporated community and census-designated place (CDP) in Harford County, Maryland, United States. The population was 25,562 at the 2010 census, up from 23,378 in 2000.

Edgewood High School (EHS) is a four-year public high school in Edgewood in Harford County, Maryland, United States. The school is located in the south park portion of the county near U.S. Route 40. It is home to the International Baccalaureate program for Harford County, as well as the Academy of Finance and the Teacher Academy of Maryland programs.

Bush River is a tidal estuary in Harford County, Maryland, located about 15 mi (24 km) northeast of Baltimore. The estuary extends from the community of Riverside, south for about 9 mi (14 km), to the Chesapeake Bay. The watershed area of tidal Bush River is 125 mi2 (320 km2), and includes Aberdeen Proving Ground, a military facility.

Winters Run is a 14.6-mile-long (23.5 km) river in Harford County, Maryland. The river begins north of the community of Fallston at the confluence of the West and East Branches, and flows southeast about 11 miles (18 km) to Atkisson Dam in Bel Air. The dam and reservoir were built by the U.S. Army in 1942 to provide an auxiliary fresh water source for nearby Edgewood Arsenal. Upon reaching the tidal line, the river is renamed Otter Point Creek, which empties to Bush River and the Chesapeake Bay. The watershed area of Winters Run is about 56 square miles (150 km2).North of the dam is Harford Glen, an environmental study area owned by the Harford County Public Schools to provide environmental education to students around the county.

Trinity Lutheran Christian School & Early Learning Center (TLCS) is a private K-8 Christian school in the Joppa community and in the Edgewood census-designated place in Harford County, Maryland.Trinity serves families with children ages 6 weeks to 8th Grade.