City of Monrovia | 1,604 followers on LinkedIn. A dynamic community that blends small town charm with big city amenities! | All the warmth of Southern California and the advantages of a gorgeous natural environment unite to create a place that is at once beautiful, historic, cultural, economically diverse, and inviting. Located 20 miles northeast of Los Angeles and nestled at the base of the San Gabriel Mountains, the City of Monrovia is home to nearly 40,000 active and engaged residents who enjoy a dynamic community. This growing city distinguishes itself from other communities with its dynamic small-town charm and collection of high-tech industry.