| Official Name: | State Line |
| Pushpin Map: | Indiana#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | St. Joseph |
| Subdivision Type3: | Township |
| Subdivision Name3: | Clay |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 41.7583°N -86.2542°W |
| Elevation Ft: | 719 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46637 |
| Area Code: | 574 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 452857 |
State Line is an unincorporated community in Clay Township, St. Joseph County, in the U.S. state of Indiana.
The community is close to the state border between Indiana and Michigan, and is part of the South Bend - Mishawaka IN-MI, Metropolitan Statistical Area.