How to send mail to Senator John Barrasso

To write to Senator John Barrasso, the Republican senator from Wyoming, address your letter to The Honorable John Barrasso, United States Senate, 307 Dirksen Senate Office Building, Washington, DC 20510. Any American can write to any member of Congress, but your home-state senators count you as a constituent and act on your casework. Note that mail to Capitol Hill is screened off-site and can take a few weeks — say who you are, keep it to one issue, and make a clear ask.

Mailing address

Verified July 2026

United States Senate — Washington, DC office

The Honorable John Barrasso
United States Senate
307 Dirksen Senate Office Building
Washington, DC  20510

Reaches John Barrasso's Washington office. Best for positions on bills, nominations, and national issues.

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Sources

Addresses verified July 2026 against official sources. Always confirm on the official site before time-sensitive filings.

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Key facts

  • Address mail to The Honorable John Barrasso, United States Senate, 307 Dirksen Senate Office Building, Washington, DC 20510. Unlike outgoing franked mail, letters you send to Congress need normal postage.
  • John Barrasso is the Republican senator from Wyoming.
  • Identify yourself as a constituent: include your full name, home address, and ZIP so Barrasso's staff can confirm you live in Wyoming. Constituent mail is prioritized and tallied.
  • Mail to Capitol Hill is screened off-site for security and can take up to several weeks to arrive. For time-sensitive casework, the member’s in-state district office is usually faster.
  • One clear ask per letter — support or oppose a specific bill, request a meeting, or open a casework file. A personal letter carries more weight than a form email or petition signature.
  • Find Barrasso's district office and contact form at https://www.barrasso.senate.gov — but a printed letter is harder to overlook on issues you care about.
  • PostPal prints your letter and hands it to USPS the next business day for $5 — no printer, envelope, or stamps.

How to send your letter

  1. 1

    Confirm this is your senator

    John Barrasso is one of Wyoming's two U.S. senators. Any American can write to any senator, but for casework a federal agency is involved in, your home-state senators are the ones whose staff will act.

  2. 2

    Say who you are and where you live

    Open with your full name, street address, and ZIP code. Offices sort mail by whether the writer is a constituent, and your address is how they confirm it. State your issue in the first line.

  3. 3

    Keep it to one issue with a clear ask

    One page, one topic, one specific request — support or oppose a named bill, take a position, or open a casework file. A short, specific letter gets a substantive reply; a multi-issue essay gets a form response.

  4. 4

    Send it without printing anything

    Write your letter in PostPal with John Barrasso's address prefilled and we print, envelope, and mail it via USPS the next business day for $5 — with a dated confirmation email.

Common questions

What is Senator John Barrasso's mailing address?

The Honorable John Barrasso, United States Senate, 307 Dirksen Senate Office Building, Washington, DC 20510. This is the Washington office; letters need normal postage.

How long does mail to Congress take to arrive?

Mail to Capitol Hill is routed through an off-site facility and screened for security, which can add up to several weeks. If your matter is urgent, the member’s in-state district office generally receives mail faster.

Do I have to be a constituent to write to Barrasso?

Anyone can write to any senator, but offices prioritize constituents. If you live in Wyoming, say so and include your address — casework is normally handled only for home-state residents.

Will John Barrasso actually read my letter?

Constituent mail is logged and answered by Barrasso's staff, and issues raised repeatedly are flagged to the member. Include your return address (PostPal prints yours automatically) so a reply has somewhere to go.

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