Area Code 708
Illinois
Area code 708 serves Illinois, primarily Cicero, in the Central Time (CT) time zone. It has served the region since 11-Nov-1989.
Published: Verified against NANPA and FCC records
Overlay Area Code
This area code shares its geographic footprint with an overlay code, so the same cities are served by two area codes. Because overlays leave existing numbers untouched, this region's relief planning favors adding codes over redrawing boundaries.
The codes serving this same region: area code 464 (Cicero).
With prefix utilization already at 97.9%, numbering resources here are under sustained pressure — context that explains why overlays were introduced.
In service since: 11-Nov-1989
Area Code Splits
2 area codes have been carved out of this code's original territory through geographic splits. Each split was a relief action: as demand grew, part of the region was reassigned to a new code rather than overlaying the whole territory.
Split into: area code 630 (Aurora), area code 847 (Chicago).
Demographics & Economics
Demographic Data Unavailable for Area Code 708
County-level demographic data is not available for this area code because NPA boundary polygons are not publicly distributed by NANPA. We use geographic boundary data from the Colorado Open Data Portal to map area codes to counties, which currently covers 194 of 376 geographic area codes.
Demographic statistics (population, income, education, poverty) require county-level aggregations from Census ACS data. Without a county mapping, these aggregations cannot be computed. We are actively seeking additional data sources to improve coverage.
Statistics are population-weighted aggregations from Census ACS 5-year estimates where county boundary data is available.See Sources for details.
Time Zone
- Central Time (CT)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
IL
Major Cities
- Cicero
- Orland Park
- Oak Lawn
- Berwyn
- Tinley Park
- Oak Park
- Calumet City
- Burbank
- Lansing
- Chicago Heights
- Oak Forest
- Homer Glen
- Melrose Park
- Elmwood Park
- Blue Island
- Maywood
- South Holland
- Dolton
- Park Forest
- Frankfort
- Mokena
- Harvey
- Evergreen Park
- Homewood
and 75 more cities
Demographics
Detailed demographic and economic data is not yet available for area code 708.
History
Area code 708 was established in 1989 as a geographic area code. It shares its territory with area code area code 464.
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 708).
| County | Population | Share |
|---|---|---|
| Cook, IL | 1,330,192 | 84.9% |
| Will, IL | 223,568 | 14.3% |
| Kankakee, IL | 13,429 | 0.9% |
Area Code 708 Family Tree
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All Descendants
Area code 708 was originally assigned in 11-Nov-1989 to serve IL. Over the years, it has generated 5 descendant area codes through a combination of geographic splits and overlays as demand for telephone numbers grew.
Call Context
This area code covers a geographic region across IL, including Cicero and surrounding communities.
Nearby Area Codes
Area codes geographically closest to 708.
Other Area Codes in Illinois
Area codes that also serve Illinois, linked for easy comparison.