Conflans-Sainte-Honorine is a French commune in the Yvelines department , in the Île-de-France region . Its inhabitants are called the Conflanais. Conflans-Sainte-Honorine is considered the main French capital of the inland waterway industry . Country France Region Ile-de-France Borough Saint-Germain-en-Laye Canton Conflans-Sainte-Honorine Government Mayor (2020–2026) Laurent Brosse Area1 9.9 km 2 (3.8 sq mi) Population (2017-01-01) 35.846 Time zone UTC + 01: 00 ( CET ) Summer ( DST ) UTC + 02: 00 ( CEST ) Location Conflans-Sainte-Honorine is located in the […]