Lakes / Iowa / Palo Alto County / Lost Island Lake
Lost Island Lake, Iowa
1,152 acres
Surface Area
Where It Sits, and How Deep It Goes
Locator - Iowa
43.17 degrees N, 94.91 degrees W - Palo Alto County. State and county outlines drawn from Census boundary data; the lake marker is placed by its USGS National Hydrography Dataset coordinates, not by eye. Schematic - not a survey map.
How Lost Island Lake Stacks Up
- Ranks #9 for surface area among the Iowa lakes counted so far - 1,152 acres.
- The largest lake in Palo Alto County among those counted.
- About 19 miles from Okoboji, as the crow flies.
Lakes Nearby
| Lake | County | Distance | Surface Area |
|---|---|---|---|
| Mud Lake | Clay | 1.3 mi | 283 acres |
| Blue Wing Marsh | Palo Alto | 1.6 mi | 76 acres |
| Trumbull Lake | Clay | 2.7 mi | 1,061 acres |
| Round Lake | Clay | 2.8 mi | 26 acres |
| Virgin Lake | Palo Alto | 4.8 mi | 208 acres |
| Dan Green Slough | Clay | 6.1 mi | 278 acres |
Straight-line distance between lake centers.
Facts and Figures
Questions About Lost Island Lake
How Big Is Lost Island Lake?
Lost Island Lake covers 1,152 acres in Palo Alto County, Iowa.
What Is the Largest Lake in Palo Alto County?
Lost Island Lake is the largest lake in Palo Alto County, at 1,152 acres.
Largest Lakes in Iowa
| # | Lake | County | Surface Area | Max Depth |
|---|---|---|---|---|
| 1 | Rathbun Lake | Appanoose | 13,869 acres | - |
| 2 | Lake Red Rock | Marion | 8,619 acres | - |
| 3 | Spirit Lake | Dickinson | 5,463 acres | - |
| 4 | Saylorville Lake | Polk | 5,428 acres | - |
| 5 | Clear Lake | Cerro Gordo | 3,632 acres | - |
All 220 Iowa lakes ranked by surface area
Sources: USGS NHD (The National Map NHD MapServer layer 12) named waterbodies FTYPE 390/436; counties via Census point-in-polygon lake data (ID 132544894). Verified October 30, 2026.