Crouy-en-Thelle () is a commune in the Oise department in northern France. Population As of 2017, Crouy-en-Thelle had a population of 1,098, with a population density of 187 per km². As of 2019, there are 415 dwellings in the commune, of which 399 primary residences. Geography Crouy-en-Thelle's elevation ranges between and above sea level. Its area is . The town is 3 km east of Neuilly-en-Thelle, and 8 km northeast of Persan. See also Communes of the Oise department References Communes of Oise