Track a letter

New Democratic Party of Canada head office mailing address

To mail a letter to New Democratic Party of Canada, a federal political party, send it to the party's national office at New Democratic Party of Canada, Suite 300, 279 Laurier Avenue West, Ottawa, ON K1P 5J9. The New Democratic Party is a federal social-democratic party founded in 1961 from the Co-operative Commonwealth Federation and the Canadian Labour Congress. It runs candidates across the country and has formed government in several provinces. This is the party's publicly published head office — the right address for membership correspondence, policy feedback, and letters to the party. Add your return address if you'd like a reply, and confirm the address on the party's official site before anything time-sensitive.

Mail a letter to the NDP

$6 flat — postage included · no account needed

Mailing address

Verified September 2026

New Democratic Party of Canada — national office

New Democratic Party of Canada
Suite 300
279 Laurier Avenue West
Ottawa ON  K1P 5J9

Membership correspondence, policy feedback, mailed donations, and letters to the party. This is the national/head office — not a local candidate's constituency office or riding association.

Mail a letter to the NDP

No printer, envelope, or stamp — we print and mail it the next business day.

Sources

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

Key facts

  • This is New Democratic Party of Canada's national head-office address, taken from the party's own official site.
  • New Democratic Party of Canada is a federal political party founded in 1961.
  • The federal NDP’s national office is Suite 300 in downtown Ottawa; add an attention line such as "Membership" or "Office of the Leader" so your letter is routed to the right team.
  • Address a specific team with an attention line (e.g. "Attention: Membership") so mail is routed internally.
  • Use it for letters, membership forms, and printed documents — not parcels or gifts.
  • PostPal prints your letter and mails it for you — no printer, envelope, stamps, or post office trip.

How to send your letter

  1. 1

    Decide who your letter is for

    A letter to the head office reaches the party generally. For a specific team — membership, the leader's office, or a policy area — add an attention line such as "Attention: Membership" so it's routed faster.

  2. 2

    Write your letter

    Keep it clear and factual, whether it's about policy, joining, or renewing. Include any membership number and your return address so the party can write back. The federal NDP’s national office is Suite 300 in downtown Ottawa; add an attention line such as "Membership" or "Office of the Leader" so your letter is routed to the right team.

  3. 3

    Address it to the national office

    First line: New Democratic Party of Canada. Next: Suite 300. Then the street: 279 Laurier Avenue West. Then the city line: Ottawa ON K1P 5J9.

  4. 4

    Send it with PostPal

    Write or upload your letter to PostPal with the address above prefilled. We print it, add your return address, and mail it for you — no printer, envelope, stamps, or trip to the post office.

Common questions

What is New Democratic Party of Canada's head office mailing address?

New Democratic Party of Canada, Suite 300, 279 Laurier Avenue West, Ottawa, ON K1P 5J9. It's the party's publicly published national office — the right address for membership correspondence, policy feedback, and letters to the party. Confirm it on the NDP's official site before anything time-sensitive.

Will an MP or the party leader read my letter?

Letters to a national party are opened and sorted by staff, who route them to the relevant team — so your letter is handled, but a personal reply from the leader or an MP isn't guaranteed. A concise letter with your return address and a clear ask gives you the best chance of a response.

Can I mail a membership form or a donation to the NDP?

Often, yes — many parties accept mailed membership forms and cheque donations at the head office. The federal NDP’s national office is Suite 300 in downtown Ottawa; add an attention line such as "Membership" or "Office of the Leader" so your letter is routed to the right team. Follow the instructions on the party's own join/donate page, and mark the envelope "Attention: Membership".

Is this a local candidate or riding association address?

No — this is New Democratic Party of Canada's national head office. To reach a specific candidate, MP, or local riding association, contact that office directly; use the head office for party-wide correspondence.

How do I mail the NDP a letter without a printer?

Write or upload your letter to PostPal with the address prefilled. We print it, add your return address, and mail it for you — no printer, stamps, or post office trip needed.

Related pages