| Official Name: | Sardis, 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: | Monroe |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.27 |
| Area Land Km2: | 3.27 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 1.26 |
| Area Land Sq Mi: | 1.26 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 522 |
| Population Density Km2: | 159.86 |
| Population Density Sq Mi: | 413.96 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 1034 |
| Coordinates: | 39.6239°N -80.9056°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 43946 |
| Blank Name: | FIPS code |
| Blank Info: | 39-70548 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2628967 |
Sardis is a census-designated place (CDP) in southeastern Lee Township, Monroe County, Ohio, United States. It is unincorporated, but has a post office with the ZIP code of 43946.[2] As of the 2020 census, it had a population of 522.
Sardis is at the intersection of Ohio State Routes 7 and 255, lying between Duffy and Fly.
Among the early settlers in this area was Major Earl Sproat, one of the 48 members of the Ohio Company. The Ohio Company founded Marietta, the first permanent settlement in the Northwest Territory in 1788. The village of Sardis was laid out by James Patton in 1843.
Students from Sardis attend River Elementary and River High School in nearby Hannibal, and are served by the Switzerland of Ohio Local School District. This school is shared with other nearby riverfront communities including: Antioch, Duffy, Fly, Hannibal, Laings, Powhatan Point (of neighboring Belmont County), and Clarington.
According to the United States Census Bureau, the CDP has a total area of 3.2km2, all of it land.[3]