Fax Chuck Grassley
Iowa R — U.S. Senator
Senate office fax number
(202) 224-6020
The form below is prefilled with this number and a cover page addressed to “The Honorable Chuck Grassley” — you just attach your document. $0.50/page, no account.
How to address your fax to Chuck Grassley
By convention, correspondence to a U.S. senator is addressed to “The Honorable Chuck Grassley”, with the salutation “Dear Senator Grassley”. Postal mail and courier deliveries reach the office at: The Honorable Chuck Grassley, United States Senate, Washington, DC 20510.
What to include
- One issue per fax. Reference a specific bill number or regulation if you have one — offices sort mail by topic, and a single clear ask gets tallied accurately.
- Your name and mailing address. Senate offices prioritize constituents; an address in Iowa signals your position should be counted as a Iowa voter.
- Keep it to one page. A short, specific message — what you want the senator to do, and why it matters to you — is read fully and logged.
Why fax still works for Senate offices
Security screening delays physical mail to Capitol Hill by weeks, and email forms bury individual messages. Fax arrives the same day with a timestamped transmission record, which is why offices — and the advocacy groups that track them — still publish fax numbers. Sending online, you get the delivery confirmation without a fax machine.
Frequently asked questions
What is Chuck Grassley's fax number?
Chuck Grassley's published Senate office fax number is (202) 224-6020. Send a fax to Senator Grassley online for $0.50 per page — no account or fax machine required.
How do I address a fax to Chuck Grassley?
Address the cover page to “The Honorable Chuck Grassley” and open the message with “Dear Senator Grassley”. Including your full name and mailing address helps the office verify you are a constituent.
Does Chuck Grassley actually read faxes?
Senate offices log every fax that arrives and count positions on issues, even when replies come by mail or email. Faxes are timestamped, which makes them useful as a written record of where you stood and when.
Also represents Iowa
Joni Ernst (R) — fax ((202) 224-9369)
Writing a cover page?
8 fax cover letter examples for every use case
Also fax your representative
U.S. House fax numbers by state and district
Fax number data collected August 2026. See the full Senate fax directory.