The Zoo is open 8 a.m. to 4 p.m. Last admittance for timed entry passes and paid parking passes is 3 p.m. Learn more about entry passes below.
If you must leave the Zoo for any reason during your visit and plan to come back, you’ll need to have your hand stamped in the Visitor Center near the main Connecticut Avenue entrance or at the Lion-Tiger information kiosk at the bottom of the Zoo. If you intend to leave and return within the same day, you must reenter the Zoo before the gates close at 3 p.m.