Contact Nicor Customer Service

Nicor Customer Service

Contacting Nicor Customer Service Center

Nicor Gas started out as Northern Illinois Gas, which was comprised of several smaller companies in the area. In 1955 the company expanded again with the purchase of Union Gas and Electric. The company operated as Northern Illinois Gas up until 1997 when they changed the name of the gas division to Nicor Gas.

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Contact Info:

Phone Contact Numbers

The Nicor Gas customer service center is open from 7 a.m. to 6 p.m. Monday to Friday. Emergency calls are accepted 24 hours a day. Customers who smell gas should call local emergency services before calling Nicor Gas.

  • Customer Service and Emergencies: 1-888-642-6748

Mailing Address

Nicor Gas customer service accepts customer letters at a dedicated mailing address. This is not the address to send payments, but questions about payments and billing – as long as the letter does not contain financial information – can be sent to the customer service address.

Nicor Gas Attn: Customer Service P.O. Box 190 Aurora, IL 60507

Official Website

Residential and business customers can visit the official website for Nicor Gas customer service at There are also links to online services for bill pay, starting service, stopping service, learning how to manage gas use and cost and energy assistance programs.

Social Media

We didn’t find any social accounts for Nicor customer service. There is a company page on Facebook, but the page was created from the Wikipedia page for the company. It is not manned by a customer service representative. There is also a Twitter page, but there are no followers or status updates.

Customer Service Email

Nicor Gas customer service is available by email for current and potential customers. The contact form asks for a valid email address. This is the email address Nicor customer service will use to contact you, so double check the email address before sending the form.

You may also be able to contact Nicor customer service directly at

Our Experience

When you contact the customer service department, you can reach a live agent by pressing three (3) for residential service and four (4) for business service. We selected option relating to residential service. Instead of reaching the customer service department, you will encounter another set of options. You will need to listen to the options carefully due to the volume of messages. We pressed nine (9) until the operator answered the call. We asked to speak with a customer service agent and the operator transferred the call. When the agent answered the call, we asked if the company participated in the LiHEAP program. The agent explained the company did and informed us of the prerequisites and qualifying standards. Overall, the experience was better than expected, except for the initial call. Can you say the same about your customer service experience? Share your thoughts with us in the comment section.

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2 Comments on “Contact Nicor Customer Service
  1. We were scheduled for Generator repair last Monday, 9-28-2015. We received 2 automated calls that day. The first was making sure there would be an adult present. The second was made after 5PM & you could not understand the message. The repairman never did show up. ??? We were here & waited all afternoon for you people. This Mon. Oct 5th we are scheduled for maintenance, but the generator is not running. After a 40 minute wait on the phone, we hung up, called back, & were told we would get a call in 64 minutes. Sergio then helped set up the new appointment. Your phone service & repair service certainly shows need for improvement.

  2. On 1/23/18 I spoke with James regarding my concerns about the service call by Center Guard( on 12/27/17) regarding my water heater. James said that he is from call center and that he will talk to Center guard and convey my concern to them and that it will be part of the record. Since yesterday I called few times but have not been able to NICOR staff to know about the status of my complaint and how it will be resolved.
    I have been very long term service maintenance client for NICOR.
    Please send email with that info or contact me

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