May 16, 2019
	U.S. Securities and Exchange Commission
	100 F Street, N.E.
	Washington, DC 20549
	Re:	Vanguard Index Funds
		File No. 2-56846
	Commissioners:
	Pursuant to Rule 497(e) under the Securities Act of 1933, we hereby file exhibits containing
	interactive data format risk/return summary information that reflects the risk/return summary
	information in the supplement dated April 26, 2019, filed pursuant to Rule 497(e), for the Vanguard
	Growth Index Fund, series of the above mentioned Trust.
	If you have any questions or comments concerning the enclosed Amendment, please contact me at
	(610)669-7310.
	Sincerely,
	Alexander F. Smith
	Associate Counsel
	The Vanguard Group, Inc.
	Enclosures
	cc: Lisa N. Larkin
		U.S. Securities and Exchange Commission