The Global Polystyrene Market Size is expected to reach USD 11.6 billion by 2033, at a CAGR of 1.00% during the forecast period 2023 to 2033.The global polystyrene market is experiencing steady growth due to its versatile applications in packaging, construction, and consumer goods. Polystyrene, a lightweight, durable, and cost-effective polymer, is widely used in insulation, disposable food containers, and electronics.