Is the Zoo Open on Memorial Day? Hours & Tips

Yes, most zoos across the United States are open on Memorial Day, including both city-run and private facilities, though hours may vary. If you're asking is the zoo open on Memorial Day, the general answer is yes—this federal holiday typically sees full or near-full operations at major zoological parks. However, it's important to verify with your specific local zoo, as some smaller or regional facilities may have adjusted schedules due to staffing, seasonal closures, or special events. Memorial Day marks the unofficial start of summer, making it a popular day for family outings, which is why many zoos choose to remain open and even extend their hours.

Quick Overview: Are Zoos Open on Memorial Day?

In short, yes—most zoos are open on Memorial Day. This includes large institutions like the San Diego Zoo, Smithsonian’s National Zoo, and the Bronx Zoo, which routinely operate on federal holidays unless affected by extreme weather, maintenance, or emergencies. Unlike holidays such as Thanksgiving or Christmas, when many public attractions close, Memorial Day is considered a high-traffic recreational day. As such, zoos anticipate increased attendance and plan accordingly. Still, not every facility follows the same policy. Some independently operated or rural zoos might reduce hours or close temporarily. Therefore, while national trends indicate openness, individual verification is strongly recommended before planning your visit.

Typical Holiday Operating Policies for Zoos

Zoos in the U.S. do not follow a single unified holiday schedule. Instead, operating hours depend on several factors including ownership (municipal, nonprofit, or private), geographic location, funding model, and staffing availability. Generally speaking, zoos tend to remain open during most major summer holidays—including Memorial Day, Independence Day, and Labor Day—because these align with peak visitor seasons.

Conversely, many zoos may close or operate on reduced hours during winter holidays such as Christmas Day and sometimes Thanksgiving. For example, the Cincinnati Zoo & Botanical Garden typically closes on Christmas but runs regular hours on Memorial Day. The Columbus Zoo and Aquarium also maintains consistent summer holiday operations, including Memorial Day weekend.

It's worth noting that while corporate policies can guide operations, individual zoo directors often have discretion over holiday scheduling. This means two zoos within the same network or association might differ slightly in their Memorial Day plans. Additionally, accreditation through the Association of Zoos and Aquariums (AZA) does not mandate holiday hours, leaving decisions up to local management.

Why Operating Hours May Differ Between Locations

Several key variables influence whether a particular zoo will be open on Memorial Day and what time it opens:

• Municipal vs. Private Ownership: City-owned zoos (e.g., Lincoln Park Zoo in Chicago) are often funded by taxpayer dollars and governed by park districts, which may enforce standardized holiday access. In contrast, privately run zoos can set their own rules based on revenue goals and operational capacity.
• Geographic Region: Zoos in warmer climates (like Florida or Southern California) may stay open year-round with minimal holiday disruption, whereas northern zoos in colder states might limit winter access but maintain full service during Memorial Day.
• Staffing and Budget Constraints: Seasonal staff hiring peaks around Memorial Day, allowing zoos to cover shifts more easily than during off-season holidays.
• Local Laws and Park Regulations: Some municipalities require public parks—and thus associated zoos—to remain accessible on federal holidays, especially those designated for remembrance and community gathering.
• Special Events: Many zoos host Memorial Day-themed programs, military appreciation days, or extended evening hours, prompting them to open earlier or stay open later than usual.

Because of this variability, families should never assume uniformity across locations—even within the same state or chain.

Memorial Day-Specific Factors Affecting Zoo Operations

Memorial Day, observed on the last Monday of May, honors fallen members of the U.S. armed forces. It originated as Decoration Day after the Civil War and has evolved into a national day of remembrance and reflection. While primarily symbolic, the holiday also functions as a cultural marker: the beginning of summer vacation season.

This dual role—as both a solemn observance and a leisure day—impacts zoo operations in unique ways:

• Increased Attendance: Families take advantage of the three-day weekend to engage in outdoor activities. Zoos prepare for higher foot traffic with extra staff, enhanced security, and additional animal enrichment demonstrations.
• Military Appreciation Programs: Many zoos offer free or discounted admission to active-duty personnel, veterans, and their families on Memorial Day. These initiatives encourage visitation and support patriotic outreach.
• Extended Hours: To accommodate crowds, some zoos extend closing times. For instance, the Saint Louis Zoo has previously stayed open until 8 PM during Memorial Day weekend.
• Weather Considerations: Early summer weather in late May is generally favorable, reducing the likelihood of closures due to snow or ice, unlike winter holidays.
• Animal Welfare Protocols: Despite increased human activity, zoos must ensure animals are not overly stressed. Cooling stations, shaded enclosures, and modified feeding schedules help maintain well-being during busy periods.

Unlike holidays such as Christmas Eve or New Year’s Eve—when many zoos close early—Memorial Day Eve (the Sunday before) usually features normal or even expanded operations. There is no widespread tradition of shortened Sunday hours ahead of Memorial Day, meaning visitors can expect consistency throughout the long weekend.

Zoo Name	Open on Memorial Day?	Typical Hours	Notes
San Diego Zoo	Yes	9:00 AM – 6:00 PM	Full operations; online tickets recommended
Smithsonian National Zoo (DC)	Yes	8:00 AM – 6:00 PM	Free entry; part of Smithsonian network
Bronx Zoo (NYC)	Yes	10:00 AM – 5:30 PM	May include special exhibits
Lincoln Park Zoo (Chicago)	Yes	10:00 AM – 5:00 PM	Free admission year-round
Dallas Zoo	Yes	9:00 AM – 5:00 PM	Discounts for military families

Practical Planning Tips for Visiting on Memorial Day

If you're planning to visit a zoo on Memorial Day, here are actionable steps to ensure a smooth experience:

1. Check the Official Website: Always go directly to the official zoo website (e.g., sdzwa.org, nationalzoo.si.edu) and look for a “Holiday Hours” banner or calendar update. These are updated annually and often posted weeks in advance.
2. Use the Mobile App: Larger zoos like the San Diego Zoo or Bronx Zoo offer mobile apps that display real-time hours, wait times, and event alerts.
3. Call Ahead: If uncertain, call the main visitor line. Staff can confirm opening times and advise on parking, ticket availability, and crowd levels.
4. Verify via Google Maps: Search the zoo name on Google, then click “See hours.” Google often pulls live data from the venue’s Google Business Profile, which is regularly maintained.
5. Purchase Tickets Online: Many zoos now use timed entry or capacity limits. Buying tickets in advance avoids disappointment and reduces contact at entry points.
6. Arrive Early: Peak attendance usually occurs between noon and 3 PM. Arriving at opening time allows cooler temperatures, shorter lines, and better animal visibility.
7. Prepare for Crowds: Bring water, sunscreen, strollers, and patience. Some exhibits may have temporary detours due to events or maintenance.
8. Have a Backup Plan: If your local zoo is unexpectedly closed, consider alternatives like nature centers, botanical gardens, wildlife refuges, or petting farms, many of which also remain open on Memorial Day.

Remember: holiday policies can change from year to year. Just because a zoo was open on Memorial Day in 2024 doesn’t guarantee identical hours in 2025. Always reconfirm close to your visit date.

Frequently Asked Questions

Are all zoos open on Memorial Day?

Most are, especially large, publicly funded ones. However, some small or specialized zoos may close or reduce hours. Always check with your specific location.

Do zoos have special events on Memorial Day?

Yes, many host military appreciation days, live music, themed keeper talks, or patriotic displays. Check the events calendar on the zoo’s website for details.

Are zoo hours different on Memorial Day?

Sometimes. While most operate on regular weekend schedules, others extend hours to accommodate visitors. Afternoon closings may be delayed by one to two hours.

Can I buy zoo tickets on Memorial Day at the gate?

You can, but it’s not guaranteed. Popular zoos may sell out due to timed entry systems. Pre-purchasing online ensures entry and often provides discounts.

Is parking available at zoos on Memorial Day?

Yes, but lots fill quickly. Arriving early increases your chance of securing a spot. Some zoos offer shuttle services from satellite lots during peak holidays.