Cities in area code 224
224 numbers are anchored to 41 rate centers across Illinois. Each row shows how many active prefixes the locality holds — a direct measure of its numbering footprint.
Ranked by active prefixes, the code's territory runs through Northbrook, Arlington Heights, Des Plaines, Elgin, Waukegan, Algonquin, Deerfield and Barrington, and 32 smaller communities down to single-prefix localities.
Metropolitan coverage: 41 rate centers belong to FCC top-100 metro areas.
Overlap note: 41 localities are shared with other area codes, so a neighbor's number may differ in its first three digits.
Clock-wise the coverage is Central.
A caller's real location can differ: numbers port between carriers and follow their owners when they move. Use the prefix tables to see where a specific number block was issued.
| Locality (rate center) | Active prefixes | Metro area | All codes serving it |
|---|---|---|---|
| Northbrook | 71 | Chicago-Naperville-Elgin, IL-IN | 224, 312, 630, 708, 815, 847 |
| Arlington Heights | 69 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Des Plaines | 48 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Elgin | 44 | Chicago-Naperville-Elgin, IL-IN | 224, 630, 847 |
| Waukegan | 38 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Algonquin | 34 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Deerfield | 20 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Barrington | 19 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Elk Grove | 18 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Glenview | 14 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Wheeling | 14 | Chicago-Naperville-Elgin, IL-IN | 224, 312, 630, 708, 847 |
| Skokie | 13 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Libertyville | 12 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Round Lake | 12 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Lake Forest | 11 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Roselle | 11 | Chicago-Naperville-Elgin, IL-IN | 224, 312, 331, 630, 708, 847 |
| Palatine | 11 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Evanston | 10 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Mundelein | 10 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Zion | 8 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Half Day | 8 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Fox Lake | 7 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Antioch | 7 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Huntley | 7 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Dundee | 7 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Lake Zurich | 6 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Lake Villa | 6 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Winnetka | 5 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Grayslake | 5 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Cary | 5 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Highland Park | 5 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Bartlett | 4 | Chicago-Naperville-Elgin, IL-IN | 224, 331, 630, 847 |
| Wilmette | 4 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Hampshire | 4 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Franklin Park | 4 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Glencoe | 3 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Park Ridge | 3 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Plato Center | 3 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Bensenville | 3 | Chicago-Naperville-Elgin, IL-IN | 224, 630, 847 |
| Wauconda | 3 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
| Pistakee Highlands | 2 | Chicago-Naperville-Elgin, IL-IN | 224, 847 |
FAQ
What is the biggest city in area code 224?
Northbrook holds the most active prefixes (71), making it the code's largest numbering locality.
How many places does 224 cover?
41 rate centers in Illinois hold active 224 prefixes, from Northbrook down to communities with a single prefix.
Does a 224 number guarantee the caller lives in one of these places?
No — the tables show where number blocks were issued. Porting and VoIP let people keep or acquire numbers anywhere.