Form 485BPOS VANGUARD MUNICIPAL BOND

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form N-1A

REGISTRATION STATEMENT (NO. 2-57689) UNDER

THE SECURITIES ACT OF 1933

Pre-Effective Amendment No.

Post-Effective Amendment No. 96

and

REGISTRATION STATEMENT (811-2687) UNDER THE INVESTMENT COMPANY

ACT OF 1940

Amendment No. 100

VANGUARD MUNICIPAL BOND FUNDS

(Exact Name of Registrant as Specified in Declaration of Trust)

P.O. Box 2600, Valley Forge, PA 19482

(Address of Principal Executive Office)

Registrant’s Telephone Number (610) 669-1000

Anne E. Robinson Esquire

P.O. Box 876

Valley Forge, PA 19482

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant hereby certifies that it meets all requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933, and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Valley Forge and the Commonwealth of Pennsylvania, on the 13th day of March, 2017.

VANGUARD MUNICIPAL BOND FUNDS
BY:___________/s/ F. William Mc Nabb III*_________

F. William McNabb III
Chairman and Chief Executive Officer

Pursuant to the requirements of the Securities Act, this Post-Effective Amendment to the Registration Statement has been signed below by the following persons in the capacities and on the date indicated:

*By: /s/ Anne E. Robinson

Anne E. Robinson, pursuant to a Power of Attorney filed on October 4, 2016, see File Number 33-32548, Incorporated by Reference.