It was the year Mount St. Helens erupted in Washington State, the Pac-Man video game was released, and the year John Lennon was shot and killed in New York. It was also the year Robin Brandgard would sit on the Town of Plainfield Town Council for the first time. In 1980, the Town of Plainfield population was recorded at 9,191 according to the United States Census Bureau. Today, the population is around 32,000 people.