Hartford is a city in Washington and Dodge counties in the U.S. state of Wisconsin. As of the 2020 census, the city had a population of 16,000. All of this population resided in Washington County; the portion of the city in Dodge County consists of only industrial and commercial parcels. Located approximately 38 mi northwest of downtown Milwaukee and 22 mi from city limits, Hartford is located on the outer edge of the Milwaukee metropolitan area.