There’s so much to love about Mercer County! Rich in history, from the American Revolution to the Industrial Revolution, Mercer County continues to flourish today as a world-class center for business, education, research, arts and technology. Whether you visit our many historic sites, explore our thousands of acres of parks, take in a show, launch a business or study at one of our celebrated universities, you’ll agree. Mercer County has it all. Mercer County, New Jersey. Still Making History!