T-Mobile Park, originally Safeco Field, seats 47,929 regular‑season fans, a figure that balances modern amenities with an intimate ball‑park feel. Seasonal adjustments, such as standing‑room tickets and field‑level seats, can push attendance a few hundred higher, but the official capacity remains anchored at just under 48 000.
Beyond the raw seat count, capacity influences ticket pricing, game‑day atmosphere, and the team’s revenue streams. A packed house can boost player morale, create a louder crowd advantage, and signal strong community support—key factors for a franchise aiming to climb the competitive ladder.