Fax John Larson
Connecticut · District 1 D — U.S. Representative
House office fax number
(202) 225-1031
The form below is prefilled with this number and a cover page addressed to “The Honorable John Larson” — you just attach your document. $0.50/page, no account.
How to address your fax to John Larson
By convention, correspondence to a U.S. representative is addressed to “The Honorable John Larson”, with the salutation “Dear Representative Larson”. Postal mail and courier deliveries reach the office at: The Honorable John Larson, U.S. House of Representatives, Washington, DC 20515.
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. House offices prioritize constituents; an address in Connecticut (ideally within District 1) signals your position should be counted as a Connecticut voter.
- Keep it to one page. A short, specific message — what you want the representative to do, and why it matters to you — is read fully and logged.
Why fax still works for House 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 John Larson's fax number?
John Larson's published House office fax number is (202) 225-1031. Send a fax to Representative Larson online for $0.50 per page — no account or fax machine required.
How do I address a fax to John Larson?
Address the cover page to “The Honorable John Larson” and open the message with “Dear Representative Larson”. Including your full name and mailing address helps the office verify you are a constituent of Connecticut's District 1.
Does John Larson actually read faxes?
House 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 Connecticut
Sen. Richard Blumenthal (D) — fax ((202) 224-9673)
Also represents Connecticut
Sen. Christopher Murphy (D) — fax ((202) 224-9750)
Writing a cover page?
8 fax cover letter examples for every use case
Fax number data collected August 2026 and cross-checked against house.gov. See the full House fax directory.