State Demographics: Pennsylvania was admitted into the United States on December 12, 1787 and was the 2nd state in the Constitution. The Pennsylvania state flower is the Mountain Laurel and the Pennsylvania state bird is the Ruffed Grouse. The state of Pennsylvania is made up of 67 Counties with Harrisburg as the Capital City. The largest cities in the state of Pennsylvania are Philadelphia, Pittsburgh, Allentown, Erie and Upper Darby Twp. Mt. Davis is the highest point at 3,213 feet and the lowest point in the state of Pennsylvania is the Delaware River at sea level. The estimated Population in 2005 was 12,429,616 up 1.2% from the year 2000. If you are relocating to the state of Pennsylvania, please use our directory to help you find an advisor for your category of interest.