Plainville, town (1990 pop. 17,400), Hartford co., central Conn., at the sandy headwaters of the Quinnipiac River; settled 1657, inc. 1869. Metal and electrical products and machinery are manufactured. The city park contains a restored portion of the New Haven–Northampton Canal, which operated there in the 1840s.
More on Plainville from Fact Monster:
See more Encyclopedia articles on: U.S. Political Geography