Allison Pristash
	State Street 1 Lincoln Street
	Mail Stop SUM 0703
	Boston, MA 02111
	Tel +1 617 662 7031
	APristash@statestreet.com

August 14, 2018

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

RE: iShares U.S. ETF Trust (the “Registrant”)

Securities Act File No. 333-179904

Investment Company Act File No. 811-22649

Ladies and Gentlemen:

On behalf of the Registrant and pursuant to Rule 497 under the Securities Act of 1933, as amended, attached for filing are exhibits containing interactive data format risk/return summary information that mirrors the risk/return summary information in the 497 filing, dated August 1, 2018 to the prospectus for the iShares Interest Rate Hedged Long-Term Corporate Bond ETF.

The purpose of this filing is to submit the 497 dated August 1, 2018 in XBRL.

If you have any questions regarding this filing, please contact Benjamin Haskin of Willkie Farr & Gallagher LLP at (202) 303-1124.

Very truly yours,

/s/ Allison Pristash

Allison Pristash

cc: Benjamin Haskin, Esq.