Largest Swimming Pool In Pennsylvania

largest swimming pool in Pennsylvania is a fresh standalone request. The information I provide on March 03, 2025 will be both straightforward and fact-based with an overview of contemporary swimming pool contenders in their indoor, outdoor and historic classifications.

The largest swimming pool in Pennsylvania is a bit of a moving target depending on how you define “largest” (surface area, water volume, or current status), but here are the top claimants:

Current Largest Outdoor Pool: Mountain Pines Campground

Location: 1662 Indian Creek Valley Rd, Champion, PA 15622 (near Pittsburgh in the Allegheny Foothills).
The swimming pool at Mountain Pines Campground attracts recognition as the largest residential outdoor swimming pool in Pennsylvania while its precise dimensions remain uncertain but widely known for its immense size. Various promotional content along with visitor reviews showcase the giant dimensions of this pool by displaying its huge rectangular shape that exceeds typical campground swimming areas. The 40-acre RV resort allows campers and day visitors to access this swimming pool area.

The facility features pristine waters alongside floating relaxation chairs which rest on a sunbathing deck area. The campground maintains an indoor heated swimming pool yet its outdoor facility gets all the attention from visitors.

The swimming pool at 2025 operates during summer months between Memorial Day and Labor Day although it may be currently closed due to winter season. Summer remains its peak operating period.

Historical Contender: Dormont Pool

Location: 1801 Dormont Ave, Pittsburgh, PA 15216 (Dormont Borough, Allegheny County).
Dormont Pool earned its reputation as the largest outdoor pool in Pennsylvania by occupying 48,000 square feet which equals 1.3 acres while containing 1.5 million gallons of water. Built in 1920 and finished in its existing state by 1937 the Pittsburgh History & Landmarks Foundation awarded it historic landmark status in 2002. The bathhouse designed in Art Deco style along with the zero-depth entry trough stand as unique features of its historical significance.

Dormont Pool features three main aquatic attractions including a water slide and mushroom element and dedicated shallow pools that spread across its extensive grounds.
Current Status: Still operational, open Memorial Day to Labor Day. Although the facility shuts down in March the public still recognizes its significant size.

Largest Indoor Pool: Kalahari Resorts Poconos

Location: 250 Kalahari Blvd, Pocono Manor, PA 18349.
The waterpark section of Kalahari Resorts holds the title as the biggest indoor waterpark in the United States with its 220,000 square feet (100,000 square feet expansion from 2017). The main pool zone in this complex is massive but the precise gallonage remains unknown since the total volume stems from various water attractions spread throughout the entire facility.
This attraction shines above others during March when outdoor swimming pools are inactive because it offers a wave pool and slides along with continuous operation.
People will choose this destination in March 2025 because it offers complete accessibility and heating throughout the facility which attracts winter visitors.

Other Notable Mentions

During the 1930s North Park Pool located in Allison Park, Pennsylvania gained recognition as the world’s biggest swimming facility until it was reduced to its current size of 60,000 square feet and 2.5 million gallons. The pool has been redeveloped and reduced in size from its original dimensions thus losing its position as the largest in the world.
Ivyside Park Pool (Altoona, PA) stood as a sizeable concrete structure at 650 feet long, 186 feet wide and 3 million gallons until it was demolished to become a parking lot in the 1970s.

Verdict

Mountain Pines Campground currently claims the title for Pennsylvania’s biggest operational outdoor pool since it enjoys extensive recognition and there is no other modern pool larger than it. Dormont Pool faces possible displacement by Mountain Pines swimming pool due to its residential dimensions even though official updated measurements are unavailable.
Kalahari Resorts Poconos maintains its position as the venue with the largest indoor waterpark throughout the state and across the country.
The former aquatic facilities known as Ivyside and North Park Pools lost their dominance which previously existed before disappearing from competition.

This March visitors should choose Kalahari Resorts Poconos as their swimming destination since Mountain Pines will open its doors for swimming in summer.