Geography The town lies in the Marikina Valley. The Marikina River runs through the western portion of the municipality, while the Nangka River runs through the south, bounded by Marikina. San Mateo has lush trees in other high areas. Most of the municipality is composed of residential areas, whereas the eastern side is composed of high plateaus and foothills of the Sierra Madre Mountains. Barangays San Mateo is politically subdivided into 15 barangays. In the 2020 census, the population of San Mateo, Rizal, was 273,306 people, with a density of . Climate Demographics Economy Industries The industrial establishments found in San Mateo are classified as light to medium industries. Welding shops and motor pool are among the predominant industries found within the municipality. Other industrial establishments are relatively small scale, like leather craft and kiskisan. Moreover, agri-business establishments which include poultry and piggery do exist within the municipality. Various products are being manufactured in San Mateo. In fact, a group of different factories is found along Kambal Road, Barangay Guitnang Bayan 2. This includes San Mateo Rubber Corp. (Nikon and Durawalk Slippers), Jolly Food Corp., First Win Corp. (Slippers), and Golden Union Footwear Inc. (Evans Shoes). A Coca-Cola warehouse is also situated at Patiis Road corner GSIS Street (Daang Tubo) in Barangay Dulong Bayan 2. San Mateo also primarily manufactures gravel and sand aggregates together with other construction supplies that are found in hardware shops distributed all over the municipality. Commerce and trade The Central Business District is strategically located amidst the concentration of settlements. A major commercial area starts from the vicinity of the public market, bounded by the national road going to Rodriguez (Montalban) and Street of Daang Bakal in Barangay Guitnang Bayan 2. This commercial zone is a conglomeration of financial institutions, a public market, restaurants/small eateries, retail stores and the like. Another area, which may be considered as major commercial area, is within the vicinity of De los Santos Street corner Gen. Luna Avenue, in Barangay Ampid 1. Other commercial areas extending to St. Mattheus Medical Hospital near the boundary of San Mateo and Marikina are located near Puregold San Mateo (formerly the Producer's Market) at Barangay Banaba and another at the corner of Patiis Road and Gen. Luna Avenue, in Barangay Malanday. SM City San Mateo along Gen. Luna Avenue in Barangay Ampid 1 adds to the list of major commercial centers of San Mateo.