Pennsylvania's diverse topography also produces a variety of climates. Straddling two major zones, the majority of the state, with the exception of the southeastern corner, has a humid continental climate.

In 2000, 10, 583, 054 Pennsylvanians 91.6% of the population five years old or older'spoke only English at home, down slightly from 92.7% in 1990.

The United States dollar, denoted by USD or the symbol $, is the official currency used in the United States. Commonly referred to as the "American dollar, " the currency is divided into 100 cents

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Pennsylvania ranked 6th in population in the US with an estimated total of 12, 335, 091 in 2002, an increase of 0.4% since 2000. Between 1990 and 2000, Pennsylvania's population grew from 11, 881, 643 to 12, 281, 054, an increase of 3.4%. The population is projected to reach 12.7 million by 2025.

Harrisburg is the capital of the United States Commonwealth of Pennsylvania. As of the 2010 census, the city had a population of 49, 528, making it the ninth largest city in Pennsylvania, after Philadelphia, Pittsburgh, Allentown, Erie, Reading, Scranton, Bethlehem and Lancaster.