WASHINGTON, October 24, 2023--CoStar Group, Inc. (NASDAQ: CSGP), a leading provider of online real estate marketplaces, information and analytics in the property markets, announced today that revenue for the quarter ended September 30, 2023 was $625 million, up 12% over revenue of $557 million for the quarter ended September 30, 2022. Net income was $91 million in the third quarter, an increase of 25% over the prior year.