Until the 1950s, Upper Dublin was mostly farmland and open space, but transitioned to a residential suburb during the postwar population boom.

Today, Upper Dublin is mostly spread-out development housing, and has the fourth highest median income in Montgomery County.

Edward Tanner was granted land by William Penn in the Province of Pennsylvania and named it "Upper and Lower Dublin."

[4] The "upper" portion has continued to exist around the original survey for the laying out and naming of Susquehanna Road.

During the Philadelphia campaign of the American Revolutionary War, George Washington and the Continental Army were encamped here after their October 4, 1777, defeat at the Battle of Germantown, and immediately prior to their march to Valley Forge.

Fort Washington State Park, in neighboring Whitemarsh Township, contains the area in which the primary American defenses were situated.

On September 1, 2021, an EF2 tornado spawned by the remnants of Hurricane Ida hit Upper Dublin Township, specifically the towns of Fort Washington and Maple Glen.

There are eight departments: Administration, Finance, Library, Public Works, Police, Parks and Recreation, Code Enforcement, and Fleet & Facilities.

The Fort Washington Office Park is a center of commerce in Upper Dublin Township.

Strategically located at a Pennsylvania Turnpike interchange, this 566-acre suburban office park contains more than 80 commercial buildings totaling over six million square feet, and is home to 230 businesses, employing more than 12,000 workers across a variety of industries.

To remain competitive, Upper Dublin Township partnered with state and county government agencies to develop a multifaceted modernization plan including major infrastructure improvements, transportation planning and a proposed mixed-use zoning ordinance.

In September 2016, the Township formed a new Municipal Authority, to oversee the planning, design and financing of the Office Park's public improvement projects going forward.

Among the companies that recently moved in to Fort Washington Office Park are Aon Affinity Insurance, Kellogg Company, Citizens Bank, Life Time Athletics, Ashfield Healthcare, Impax Laboratories, Lincoln Investment Planning, TruMark Financial Federal Credit Union, TransWorld Systems, Connexin Software and Acclara Solutions.

I-276 also has a westbound cashless tolling slip ramp in Upper Dublin Township connecting with Virginia Drive east of PA 309.

The professional staff has an average of 16 years teaching experience and approximately 85 percent hold advanced degrees.

Our Lady of Mercy was formed in 2012 by the merger of St. Alphonsus in Maple Glen, St. Anthony-St. Joseph in Ambler, and St. Catherine of Siena in Horsham.

Upper Dublin has more than 40 sites and 600 acres (2.4 km2) of parkland and open space ranging in size from neighborhood squares to sprawling meadow-like areas.