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If you have a question for our team, we would love to hear from you.

Please note, Tides does not accept unsolicited letters of inquiry, proposals or applications for funding.

If you’d like to work with Tides and are inquiring about philanthropic advising, grantmaking support, nonprofit acceleration, or fiscal sponsorship please fill out the inquiry form on the Partner With Us page to reach our partnerships team.

For all other inquiries and comments, please use the form below.

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Mailing Information for Tides

SAN FRANCISCO

Tides
1012 Torney Avenue
San Francisco, CA 94129-1755
415.561.6400
415.561.6401 Fax

NEW YORK

Tides
55 Exchange Place,
Suite 402
New York, NY 10005-3304
212.509.1049
212.509.1059 Fax

P.O. BOXES

Tides Center
P.O. Box 399385
San Francisco, CA. 94139‐9385

Tides Foundation
P.O. Box 399389
San Francisco, CA. 94139‐9389

Tides Network
P.O. Box 399400
San Francisco, CA. 94139‐9400

OVERNIGHT, EXPRESS MAIL, AND COURIER SERVICES ADDRESSES

Lockbox Services
Box #399385
Tides Center

3440 Walnut Avenue, Bldg A, Window H
Fremont, CA 94538

Lockbox Services
Box #399389
Tides Foundation

3440 Walnut Avenue, Bldg A, Window H
Fremont, CA 94538

Lockbox Services
Box #399400
Tides Network

3440 Walnut Avenue, Bldg A, Window H
Fremont, CA 94538