High Quality Content by WIKIPEDIA articles! Meriden is a city in New Haven County, Connecticut, United States. According to 2005 Census Bureau estimates, the population of the city is 59,653. Meriden was originally part of Wallingford. It was granted a separate meetinghouse in 1727, became a town in 1806, and incorporated as a city in 1867. It was named for the town of Meriden, West Midlands, England.