County of delaware

pennsylvania

History & Founding

Established in 1789, this county in southeastern Pennsylvania owes its existence to the burgeoning need for administrative organization in the newly formed United States. It was carved from the western portion of Chester County, reflecting the rapid population growth and westward expansion occurring at the time. The name itself is a nod to the Delaware Valley, and more specifically, to the Delaware River and the historical significance of the first colonial settlements along its banks. Early settlers, primarily of English, Welsh, and Scots-Irish descent, shaped the region’s culture and character. During the American Revolution, the area served as a vital supply route and staging ground for Continental Army operations. An interesting anecdote from the period recounts how a local farmer, knowing the British were planning a surprise attack, cleverly disguised his livestock to appear as a military force, effectively delaying the enemy and allowing for crucial reinforcements to arrive. The county’s strategic location and agricultural productivity played a key role in Pennsylvania's development.

Geography & Landscape

Located southwest of Philadelphia, this county occupies a relatively small but densely populated area within the Delaware Valley. The terrain is characterized by rolling hills and fertile river valleys, a stark contrast to the Appalachian Mountains further west. The Delaware River forms its western boundary, while numerous creeks and streams crisscross the landscape, contributing to the area’s rich agricultural heritage. The climate is humid subtropical, experiencing warm, humid summers and cool, relatively mild winters. While no significant mountain ranges are within the county’s borders, the landscape offers scenic vistas and opportunities for outdoor recreation. The compact size belies the diversity of its microclimates and natural beauty.

Economy & Communities

A tapestry of vibrant communities defines the area. Swarthmore, Media, Newtown Square, and Wallingford are among the many towns that contribute to the county’s unique character. Historically an agricultural center, the economy has transitioned to a blend of industry, commerce, and professional services. While agriculture remains a part of the landscape, particularly in the more rural southwestern areas, the dominant economic activities revolve around healthcare, education, and finance. Major employers include Crozer Health System, Neumann University, and various regional financial institutions. The county is primarily suburban, with a strong sense of community and a focus on quality of life. Many residents commute to Philadelphia for work, while others find ample opportunities within the county itself.

Points of Interest

Numerous points of interest draw visitors and enrich the lives of residents. Ridley Creek State Park offers hiking trails, picnic areas, and opportunities for wildlife observation. The historic town of Media, the county seat, boasts charming architecture and a vibrant downtown area. The Swarthmore campus, home to Swarthmore College, is renowned for its beautiful architecture and intellectual atmosphere. The county also hosts various festivals and events throughout the year, celebrating local culture and heritage. Notable residents throughout history have included artists, writers, and business leaders who have contributed to the region’s cultural and economic vitality. The county’s density also means a wide range of restaurants and cultural experiences are readily accessible.

Information

State
pennsylvania
Type
County
Population
550,864
Land area
184 sq mi
Capital
Media
Time zone
UTC-5
FIPS
42045

36 Cities

CityPopulationElevation
Chester36,85420 ft (6 m)
Drexel Hill29,364240 ft (73 m)
Springfield23,677-
Yeadon11,762103 ft (31 m)
Broomall11,046360 ft (110 m)
Lansdowne11,044140 ft (43 m)
Darby10,29950 ft (15 m)
Woodlyn10,03650 ft (15 m)
Collingdale8,66483 ft (25 m)
Folsom8,072105 ft (32 m)
Brookhaven7,985119 ft (36 m)
Glenolden7,476100 ft (30 m)
Ridley Park7,19679 ft (24 m)
Folcroft6,97880 ft (24 m)
Clifton Heights6,779191 ft (58 m)
Prospect Park6,594-
Swarthmore6,170120 ft (37 m)
Norwood5,98579 ft (24 m)
Media5,533330 ft (101 m)
Sharon Hill5,46840 ft (12 m)
Boothwyn5,206100 ft (30 m)
Aldan4,313126 ft (38 m)
Linwood3,37470 ft (21 m)
Lima3,225350 ft (107 m)
Upland2,97750 ft (15 m)
Morton2,715138 ft (42 m)
East Lansdowne2,586120 ft (37 m)
Chester Heights2,481336 ft (102 m)
Colwyn2,45344 ft (13 m)
Eddystone2,44220 ft (6 m)
Marcus Hook2,31433 ft (10 m)
Parkside2,267100 ft (30 m)
Trainer1,90160 ft (18 m)
Rose Valley944-
Millbourne94380 ft (24 m)
Rutledge860120 ft (37 m)

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