Buy Municipal Bonds Direct -
Unlike U.S. Treasuries, municipal securities be purchased directly from a state or city website; they must be bought through a licensed broker-dealer that is part of the underwriting syndicate.
While you cannot buy them from a government website like TreasuryDirect (which is for federal debt only), you can access these new issues through a specialized brokerage account. How to Buy Directly from the Issuer buy municipal bonds direct
How to buy municipal bonds: Investing in the community - Ally Unlike U