| Locality | Post Code |
|---|---|
| Alden, McHenry | 60001 |
| Algonquin, McHenry | 60102 |
| Barrington Hills, McHenry | 60102, 60021 |
| Bull Valley, McHenry | 60012, 60050, 60097, 60098 |
| Cary, McHenry | 60013 |
| Chemung, McHenry | 60033 |
| Coral, McHenry | 60152 |
| Crystal Lake, McHenry | 60012, 60014 |
| Fox River Grove, McHenry | 60021 |
| Greenwood, McHenry | 60098 |
| Harvard, McHenry | 60033 |
| Hebron, McHenry | 60034 |
| Holiday Hills, McHenry | 60051 |
| Huntley, McHenry | 60142 |
| Johnsburg, McHenry | 60050, 60051 |
| Lake in the Hills, McHenry | 60156 |
| Lakemoor, McHenry | 60051 |
| Lakewood, McHenry | 60014 |
| Marengo, McHenry | 60152 |
| McCullom Lake, McHenry | 60050 |
| McHenry, McHenry | 60050, 60051 |
| Oakwood Hills, McHenry | 60013 |
| Prairie Grove, McHenry | 60012, 60050 |
| Richmond, McHenry | 60071 |
| Ridgefield, McHenry | 60012 |
| Ringwood, McHenry | 60072 |