Due to technical difficulties, we cannot process online payments. Free Entry Passes are still available and visitors may purchase Parking Passes at the Zoo.

Today's hours: 8 a.m. to 4 p.m. (last entry 3 p.m.)

Passes

Today's hours: 8 a.m. to 4 p.m. (last entry 3 p.m.)

Passes

Annual Reports

The Smithsonian's National Zoo and Conservation Biology Institute's annual reports can be found on the Smithsonian website here.

Read the 2023 Conservation and Science impact report.

Annual Reports

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