| General Information about Area Code 224 | |
|---|---|
| Country | United States |
| State / Province / Territory | Illinois |
| Major City | Des Plaines |
| Time Zone | Central (UTC-06:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 224-801 | Palatine | Cook | Landline |
| 224-365 | Northbrook | Cook | Wireless |
| 224-634 | Barrington | Lake | Wireless |
| 224-381 | North Chicago | Lake | Wireless |
| 224-237 | Waukegan | Lake | Wireless |
| 224-470 | Skokie | Cook | Landline |
| 224-585 | Park Ridge | Cook | Landline |
| 224-357 | Cary | Mchenry | Landline |
| 224-538 | North Chicago | Lake | Wireless |
| 224-330 | Northbrook | Cook | Landline |
| 224-360 | Libertyville | Lake | Landline |
| 224-337 | Fox Lake | Lake | Wireless |
| 224-864 | Libertyville | Lake | Landline |
| 224-388 | Harwood Heights | Cook | Wireless |
| 224-706 | Lake Forest | Lake | Landline |
| 224-270 | Round Lake | Lake | Landline |
| 224-516 | Lake Forest | Lake | Wireless |
| 224-880 | Lake Forest | Lake | Landline |
| 224-316 | Northbrook | Cook | Wireless |
| 224-265 | Arlington Heights | Cook | Landline |