| Official Name: | New Haven, Ohio |
| Settlement Type: | Census-designated place |
| Mapsize: | 250px |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Huron |
| Subdivision Type3: | Township |
| Subdivision Name3: | New Haven |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.21 |
| Area Land Km2: | 3.20 |
| Area Water Km2: | 0.01 |
| Area Total Sq Mi: | 1.24 |
| Area Land Sq Mi: | 1.24 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 356 |
| Population Density Km2: | 111.21 |
| Population Density Sq Mi: | 288.03 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 932 |
| Coordinates: | 41.0306°N -82.6814°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 44850 |
| Area Code: | 419 |
| Blank Name: | FIPS code |
| Blank Info: | 39-54698[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2628941 |
New Haven is an unincorporated community and census-designated place (CDP) in central New Haven Township, Huron County, Ohio, United States. As of the 2020 census the population was 356. It has a post office with the ZIP code 44850.[3] It lies at the intersection of U.S. Route 224 with State Routes 61 and 598.
New Haven was laid out and platted in 1815. Like many other towns in the Firelands region of Ohio that was settled by former residents of New England who fled the region during the American Revolutionary War, New Haven is named for the Connecticut city of the same name.[4]
In 1833, New Haven contained three stores, two taverns, two physicians, and one tin factory.[5]
New Haven is one of the ending points for what has come to be known as the "Old State Road" or the "Worthington-New Haven Road", an old route that connected this town and the Firelands area to Worthington and subsequently the capital city of Columbus.[6] The Old State Road (not to be confused with current Huron County Road 52, also known as Old State Road), follows present day State Route 598 south to Galion.
New Haven is in southwestern Huron County, to the west of the West Branch of the Huron River. U.S. Route 224 leads west from New Haven 3miles to Willard and east 8miles to Greenwich. State Route 61 leads north to Norwalk, the Huron county seat, and south 3miles to Plymouth, while Route 598 leads southwest to Galion. Mansfield is to the southeast via Route 61 and county roads.
According to the U.S. Census Bureau, the New Haven CDP has a total area of 3.2sqkm, of which 8335order=flipNaNorder=flip, or 0.26%, are water.[2]