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[Letterhead of Equifax Inc.]

September 24, 2012

Via EDGAR and ELECTRONIC MAIL

Mr. Larry Spirgel

Assistant Director

United States Securities and Exchange Commission

Division of Corporate Finance

100 F. Street, N.E.

Washington, D.C. 20549

	Re:	Equifax Inc.

Form 10-K for the Fiscal Year Ended December
31, 2011

Filed February 23, 2012

File No. 001-06605

Dear Mr. Spirgel:

Below please find the response of Equifax
Inc. (the “Company”) to the comment of the staff (the “Staff”) of the United States Securities and Exchange
Commission (the “Commission”) set forth in your letter dated September 7, 2012 to the Company. For the convenience
of the Staff, the Company has restated the comment in italics.

Form 10-K for Fiscal Year Ended December
31, 2011

Risk Factors, page 15

Security breaches and other disruptions
to our information technology …, page 17

1.  We note you disclose
that disruptions to your information technology networks and infrastructure may be vulnerable to damage, disruptions, or shutdowns
due to various events, including cyber attacks and other security breaches.  If you have experienced any cyber attacks, security
breaches or other similar events in the past, in future filings, beginning with your next Form 10-Q, please confirm that you will
state that fact in order to provide the proper context for your risk factor disclosure.  Please refer to the Division of Corporation
Finance's Disclosure Guidance Topic No. 2 at http://www.sec.gov/divisions/corpfin/guidance/cfguidance-topic2.htm for additional
information.

Company Response:

The Company will modify its risk factor
disclosure in subsequent filings, beginning with the next Form 10-Q for the quarter ended September 30, 2012, to reflect the Staff’s
comment, substantially as indicated in the underlined language below:

Security breaches and other disruptions to our information
technology infrastructure could interfere with our operations, and could compromise Company, customer and consumer information,
exposing us to liability which could cause our business and reputation to suffer.

In the ordinary course of business, we rely
upon information technology networks and systems, some of which are managed by third parties, to process, transmit and store electronic
information, and to manage or support a variety of business processes and activities, including business-to-business and business-to-consumer
electronic commerce and internal accounting and financial reporting systems. Additionally, we collect and store sensitive data,
including intellectual property, proprietary business information, the proprietary business information and personally identifiable
information of our customers, employees, consumers and suppliers, in data centers and on information technology networks. The secure
operation of these networks and systems, and of the processing and maintenance of this information, is critical to our business
operations and strategy.

Despite our substantial investment in security
measures and business continuity plans, our information technology networks and infrastructure or those of our third party vendors
and other service providers could be vulnerable to damage, disruptions or shutdowns due to attacks by hackers or breaches due to
employee error or malfeasance, or other disruptions during the process of upgrading or replacing computer software or hardware,
power outages, computer viruses, telecommunication or utility failures or natural disasters or other catastrophic events.

We are regularly the target of attempted
cyber and other security threats and must continuously monitor and develop our information technology networks and infrastructure
to prevent, detect, address and mitigate the risk of unauthorized access, misuse, computer viruses and other events that could
have a security impact.  Although we have not experienced any material breach of cybersecurity, if one or more of such events occur, this potentially could compromise our networks and the information
stored there could be accessed, publicly disclosed, lost or stolen. Any such access, disclosure or other loss of information
could subject us to litigation, significant losses, regulatory fines, penalties or reputational damage, any of which could have
a material effect on our cash flows, competitive position, financial condition or results of operations. Our property and business
interruption insurance may not be adequate to compensate us for all losses or failures that may occur. Also, our third party insurance
coverage will vary from time to time in both type and amount depending on availability, cost and our decisions with respect to
risk retention.

We hope that the foregoing has been responsive
to the Staff’s comments. If you have any questions related to this letter, please contact me at (404) 885-8045.

* * * * *

The Company hereby acknowledges that:

 · The Company is responsible for the adequacy and accuracy of the disclosure in the filing;

 · Staff comments or changes to disclosure in response to Staff comments do not foreclose the Commission from taking any action
with respect to the filing; and

 · The Company may not assert Staff comments as a defense in any proceeding initiated by the Commission or any person under the
federal securities laws of the United States.

* * * * *

    Sincerely,

    /s/Dean C. Arvidson

    Dean C. Arvidson

    Senior Vice President, Deputy General

    Counsel and Corporate Secretary

    Equifax Inc.

    cc:
    Richard F. Smith

    Chairman and Chief Executive Officer

    Kent E. Mast

    Corporate Vice President and Chief Legal Officer

    Lee Adrean

    Corporate Vice President and Chief Financial Officer