| Official Name: | Wall Lake, Indiana |
| Settlement Type: | Census-designated place |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Wall Lake |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | Counties |
| Subdivision Name2: | LaGrange, Steuben |
| Subdivision Type3: | Townships |
| Subdivision Name3: | Greenfield, Millgrove |
| Area Footnotes: | [1] |
| Unit Pref: | Imperial |
| Area Total Sq Mi: | 0.75 |
| Area Land Sq Mi: | 0.54 |
| Area Water Sq Mi: | 0.21 |
| Population As Of: | 2020 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 942 |
| Coordinates: | 41.7297°N -85.2°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 46776 (Orland) |
| Area Code: | 260 |
| Blank Name: | FIPS code |
| Blank Info: | 18-79784 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2830442 |
Wall Lake is an unincorporated community and census-designated place (CDP) in LaGrange and Steuben counties, Indiana, United States.
The community is mostly in northeastern LaGrange County, surrounding the natural water body of Wall Lake. The CDP extends east into the northwest corner of Steuben County, although the lake itself is only in LaGrange County. The community and lake are west of Orland and northeast of LaGrange, the LaGrange county seat. The Michigan state line is 2miles to the north.
According to the U.S. Census Bureau, the Wall Lake CDP has a total area of 0.75sqmi, of which 0.54sqmi are land and 0.21sqmi, or 27.75%, are water.[1]
The lake connects at its northeast end by a short outlet to Brown Lake, partially within the CDP. The lake system drains north to the Fawn River, a northwest-flowing tributary of the St. Joseph River leading to Lake Michigan.