1998 Galerucella Releases by County in Illinois
| County | Number Released | Total |
| Carroll | 5,000 | |
| Clay | 500 | |
| Cook | 76,075 | |
| DuPage | 49,676 | |
| Franklin | 500 | |
| Jefferson | 3,000 | |
| Kane | 27,000 | |
| Lake | 184,400 | |
| McHenry | 106,050 | |
| Richland | 437 | |
| Winnebago | 1,000 | |
| 453,638 | ||
Information on this page maintained by David Voegtlin.