Fairfield, Illinois Phone Lookup

Q: How do I look up a phone number in Fairfield, Illinois?

Enter the full 10-digit number into the search box and click Search. 411FCC returns the owner's name, location, carrier, and line type. The lookup covers all 1 area code serving Fairfield.

Q: What types of phone numbers are in Fairfield?

Fairfield has both wireless and landline numbers. Approximately 41% of prefixes are wireless, with 59% being landline or VoIP. 411FCC results identify the line type and carrier for any number searched.

Find the owner of any phone number in Fairfield, Illinois.

What Phone Numbers Are in Fairfield, Illinois?

Looking up a phone number in Fairfield, Illinois? Enter any 10-digit phone number in the search box above to find the owner's name, address, and carrier information. Fairfield is served by 1 area code and has 5 active phone prefixes.

1 Area Code

5 Phone Prefixes

41% Wireless

59% Landline

Area Codes Serving Fairfield

Phone numbers in Fairfield, Illinois use the following area code: 618.

Top Phone Carriers in Fairfield

The most common phone service providers in Fairfield include:

Frontier North, Inc. - Il
New Cingular Wireless Pcs, Llc - Il
Onvoy, Llc
Cellco Partnership Dba Verizon Wireless - Il
Teleport Communications America, Llc - Il

Data current as of March 2026

Nearby Cities in Illinois

Other cities in Illinois that share area codes with Fairfield:

Fairfield at a Glance

4,561 Population

46.4 Median Age

$41,989 Median Income

2,570 Housing Units

68% Homeownership

Demographics

White 93.5%
Black 0.9%
Hispanic 2.6%
Asian 1%
Other 1.9%

Financial Profile

$62,805 Avg. Income per Return

$40,047 Avg. Wages per Return

3,780 Tax Returns Filed

1 ZIP Codes

Frequently Asked Questions

What Area Codes Serve Fairfield, Illinois?

Phone numbers in Fairfield, Illinois use 1 area code: 618. These area codes are shared with other cities in the region. Fairfield has 5 active phone prefixes assigned to local carriers. If you received a call from one of these area codes, enter the full 10-digit number into the search box above to find out who called. The area code alone tells you the general geographic region, but a full reverse phone lookup on 411FCC reveals the specific owner, carrier, and line type associated with the number.

How Do I Look Up a Phone Number in Fairfield, Illinois?

To look up any phone number in Fairfield, enter the full 10-digit number into the search box at the top of this page and click Search. 411FCC returns available information about the number including the registered owner's name, location, phone carrier, and whether it is a wireless cell phone, landline, or VoIP line. The lookup covers all 1 area code serving Fairfield and works for numbers from every carrier in the area. Results appear within seconds. 411FCC has maintained its phone number database since 2003.

What Types of Phone Numbers Are in Fairfield?

Fairfield, Illinois has both wireless and landline phone numbers. Approximately 41% of phone prefixes in the area are classified as wireless (cell phone), with the remaining 59% being landline or VoIP. Major carriers serving the area include Frontier North, Inc. - Il, New Cingular Wireless Pcs, Llc - Il, Onvoy, Llc. When you search a phone number on 411FCC, the results identify the line type and carrier, which helps distinguish personal cell phones from business landlines and identify VoIP numbers commonly used by automated calling systems.