Chico,nickname "City of Roses" appears on the Seal of the City of Chico. The city has been designated aTree City USAfor 31 years by theNational Arbor Day Foundation.It is the most populous city inButte County, California, United States.The city is a cultural, economic, and educational center of the northernSacramento Valley.The cityis best known as a well-managed city that values quality infrastructure and services, and maintains a special sense of community and small-town living as it has developed into a vibrant regional center for business, recreation and cultural activities.