Fax the U.S. Senate

About Senate fax numbers

• Fax numbers are each senator's published Senate office line — the Washington, D.C. office where available, otherwise a public state-office line. Collected August 2026.
• Offices periodically stop accepting faxes — senators marked “not accepting faxes” were listed that way in the most recent directory update.
• Senators often publish additional state-office fax numbers; the number listed above is the one the directory most recently confirmed as active.
• Want a written record? Faxing a senator gives you a timestamped transmission confirmation — useful for casework and advocacy follow-ups.
• Reaching out about a federal issue? Your representative in the House can be faxed the same way.