New Haven is a city in Franklin County, Missouri, United States. The population was 2,008 at the 2010 census. New Haven is within the Hermann AVA (American Viticultural Area).
New Haven was originally called Miller's Landing, and under the latter name was platted in 1855. A post office called New Haven has been in operation since 1858. The AME Church of New Haven, New Haven Commercial Historic District, New Haven Residential Historic District, Wilhelm Pelster House-Barn, and Christopher and Johanna Twelker Farm are listed on the National Register of Historic Places.
The city is located in northwest Franklin County above the Missouri River Valley. Missouri Route 100 is on the south side of the city. Hermann is about 13 miles to the northwest and Washington is 11 miles to the east. According to the United States Census Bureau, the city has a total area of 3.45 square miles (8.94 km²), of which, 3.29 square miles (8.52 km²) is land and 0.16 square miles (0.41 km²) is water.
As of the census of 2010, there were 2,089 people, 818 households, and 533 families residing in the city. The population density was 635.0 inhabitants per square mile (245.2/km²). There were 905 housing units at an average density of 275.1 per square mile (106.2/km²). The racial makeup of the city was 95.1% White, 0.7% African American, 0.6% Native American, 0.3% Asian, 1.7% from other races, and 1.6% from two or more races. Hispanic or Latino of any race were 2.1% of the population.
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