The Park District maintains 22 outdoor courts across Northbrook for tennis enthusiasts to enjoy. The courts are open from early-April until mid-October, although the District occasionally reserves some of them for private lessons, tournaments, schools and league play. Notification of court closings will occur in advance. Tennis Courts are generally open from sunrise to sunset. To reserve a court, call 847-291-2980 or visit our Outdoor Rentals page for more information.