OMSI membership is your key to a year of fun, interactive, affordable science exploration! With free admission, discounts, members-only events and new exhibits and features arriving all the time, annual membership to OMSI is a great investment for your family and your community.

Membership staff are happy to round up a membership purchase if you would like to support OMSI beyond the cost of a membership--call 503.797.4634.

Options & Pricing

OMSI After Dark for 1 $50.00
1 adult admission
Half price museum admission and labs
OMSI After Dark for 2 $90.00
1 adult admission + guest OR 2 adult admissons
Half price museum admission and labs
OMSI for 2 $90.00
1 adult admission + 1 guest OR 2 adult admissions
2 attractions passes
Family $105.00
2 adult admissions + 4 children
Family Plus $135.00
2 adult admissions + 4 children
1 guest per visit
4 attractions passes
Friend $165.00
2 adult admissions + 8 children
2 guests per visit
8 attractions passes
Unlimited Planetarium Matinee showings
Patron $215.00
2 adult admissions + 10 children
3 guests per visit + 10 attraction passes
Unlimited Planetarium Matinees
2 OMSI After Dark admissions
Free parking


Membership covers general museum admission for one year. Planetarium, Theater, submarine and selected featured exhibits and events are available for members to purchase at a discounted rate.

Renewal Information

Be sure to renew before the year is up to keep receiving continuous member benefits. You do not lose months when you renew early and you can renew your membership anytime during the year.   Renew Now!

Donation Inquiries

For opportunities to support OMSI at $500 or above, please contact Kate Simmons, Donor Relations Associate

Phone: 503.797.4601

More Info

Additional Benefits

  • FREE admission to OMSI's permanent exhibits and labs for one full year
  • Invitations to Member Nights and other member-only events
  • Discounted tickets to featured exhibits and special events
  • Up to $50 off science camps and classes
  • 10% discount at Theory, the Empirical Theater cafe and the Science Store
  • Subscription to OMSI's e-mail newsletter
  • $1 off tickets to the Empirical Theater, Kendall Planetarium, and USS Blueback
  • FREE general admission to over 290 science centers and museums (PDF) worldwide (Evergreen Aviation and Space Museum, and Portland Children's Museum excluded)
  • Discounted parking

Download the List of Other Science Centers (PDF)

Other Information

According to IRS guidelines, the estimated value of OMSI membership benefits (including annual recurring rights and privileges) qualify under the membership benefits exception. Therefore, the full amount paid for OMSI membership is considered a charitable contribution.


OMSI has an active team of volunteers who contribute their time and talents to support OMSI's educational mission.

Become a Volunteer

Camps & Classes

Members receive up to $50 off OMSI Science Camps & Classes.