As of the 2010 census, the borough was 90.5% White, 1.4% Black or African American, 0.1% Native American, 2.0% Asian, and 2.1% were two or more races. 8.9% of the population were of Hispanic or Latino ancestry.
As of the census
Pennsylvania Route 313 is the only numbered highway serving Dublin. It follows Main Street on a northwest-southeast alignment through the center of the borough.
Climate
According to the Köppen climate classification system, Dublin has a Hot-summer, Humid continental climate (Dfa). Dfa climates are characterized by at least one month having an average mean temperature ≤ , at least four months with an average mean temperature ≥ , at least one month with an average mean temperature ≥ and no significant precipitation difference between seasons. Although most summer days are slightly humid in Dublin, episodes of heat and high humidity can occur, with heat index values > . Since 1981, the highest air temperature was on July 22, 2011, and the highest daily average mean dew point was on August 2, 2016. The average wettest month is July, which corresponds with the annual peak in thunderstorm activity. Since 1981, the wettest calendar day was on August 27, 2011. During the winter months, the average annual extreme minimum air temperature is . Since 1981, the coldest air temperature was on January 22, 1984. Episodes of extreme cold and wind can occur, with wind chill values < . The average annual snowfall (Nov-Apr) is between and . Ice storms and large snowstorms depositing ≥ of snow occur once every few years, particularly during nor’easters from December through February.
Ecology
According to the A. W. Kuchler U.S. potential natural vegetation types, Dublin would have a dominant vegetation type of Appalachian Oak (104) with a dominant vegetation form of Eastern Hardwood Forest (25). The plant hardiness zone is 6b with an average annual extreme minimum air temperature of .