[3] According to the U.S. Census Bureau, the borough has a total area of 0.5 square miles (1.3 km2), all land.

A letter written by Reverend Uriah DuBois date Durham, April 21, 1798 is the first known mention of Dublin.

The petition signed by _____ Angelmoyer, Samuel Angeny, Isaac Bechtel, Enos Cassel, Isaac Cassel, Joseph Detweiler, Christian Eckert, Philip Fluck, Abraham Fritz, Enos Hunsberger, Samuel Kile, Dielman Kolb, Henry Kolb, Jacob Kolb, Michael Kulp, Joseph Moyer, Samuel Moyer, Daniel Richert, John Wats and Samuel Wright was presented to Judge John Fox, failed.

[4] The first post office of Dublin was opened on April 18, 1827, Newton Rowland, postmaster.

[4] Dublin extends along a stretch of Pennsylvania Route 313 which connects the much larger towns of Doylestown and Quakertown.

Almost the entire town can be viewed from PA 313 with only a few streets diverging from the main road.

Several rows of old houses line PA 313, some of which date back to the late 18th century.

The majority of Dublin's population lives in several developments around the main part of town.

The average wettest month is July, which corresponds with the annual peak in thunderstorm activity.

Ice storms and large snowstorms depositing ≥ 12 inches (30 cm) of snow occur once every few years, particularly during nor’easters from December through February.

[13] The plant hardiness zone is 6b with an average annual extreme minimum air temperature of −2.7 °F (−19.3 °C).

[11] The spring bloom typically begins by April 14 and fall color usually peaks by October 26.