| 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 |
|---|---|---|---|
| 224-366 | Arlington Heights | Cook | Landline |
| 224-512 | Barrington | Lake | Landline |
| 224-770 | Palatine | Cook | Wireless |
| 224-420 | Evanston | Cook | Wireless |
| 224-320 | Lake Zurich | Lake | Landline |
| 224-336 | Northbrook | Cook | Wireless |
| 224-456 | Northbrook | Cook | Landline |
| 224-857 | Arlington Heights | Cook | Wireless |
| 224-315 | Des Plaines | Cook | Wireless |
| 224-520 | Medinah | Dupage | Wireless |
| 224-737 | Lincolnshire | Lake | Landline |
| 224-517 | Barrington | Lake | Wireless |
| 224-408 | Mount Prospect | Cook | Landline |
| 224-577 | Round Lake | Lake | Landline |
| 224-236 | Hanover Park | Cook | Landline |
| 224-250 | Des Plaines | Cook | Wireless |
| 224-534 | Chicago | Cook | Landline |
| 224-531 | Des Plaines | Cook | Wireless |
| 224-401 | Lake In The Hills | Mchenry | Wireless |
| 224-505 | Winnetka | Cook | Landline |