Doctor Coss is both a city and a municipality in Nuevo León, Mexico. It is located at 25.9333°N -109°W, 182 km NE of Monterrey. Its name honors Dr. José María Coss, a liberal politician of the 19th century. In 2000 the municipality had 2246 inhabitants, while the homonym city (which serves as the municipal seat) had some 1,000.
The first settlement, Paso del Zacate, was formed around 1745 with families from Los Aldamas, Nuevo León and General Bravo. Almost a century later Paso del Zacate was declared a villa by the state congress and finally, on October 7, 1882, the municipality of Doctor Coss was formed with the unification of Paso del Zacate, Zacate, Soledad, El Ebanito, La Lajilla, Los Chorros, Tecomate, Lucero, Las Mujeres and Gachupines.
The municipality has an area of 664.6 km2 and is bordered by the state of Tamaulipas to the north, General Bravo to the east and Los Aldama and China to the west. It is located 134 meters above sea level (which makes it the highest municipality in the state) and is crossed by the San Juan river.
Doctor Coss has 4 kindergartens, 14 elementary schools and one secondary school.
| Municipal President | Year(s) in office | |
|---|---|---|
| Martín González Peña | 1939–1940 | |
| Luis Gonzaga Cantu Salinas | 1941–1942 | |
| Gumersindo Ríos Salinas | 1943–1945 | |
| Ramón Hinojosa Martínez | 1946–1948 | |
| 1949–1951 | ||
| Zaragoza Ríos García | 1952–1954 | |
| Arnulfo Madrigal Serna | 1955–1957 | |
| David Peña Cantú | 1957 - | |
| Domingo Pérez Alanís | 1958–1960 | |
| Fidel Ríos Cantú | 1961–1963 | |
| Leandro Salinas Peña | 1964–1966 | |
| Severiano Ríos Cantú | 1967–1971 | |
| Pedro Salinas Treviño | 1970–1971 | |
| Sixto Gutiérrez Ríos | 1972–1973 | |
| Juan Salinas Cantú | 1974–1976 | |
| Rodolfo Hinojosa Tijerina | 1977–1979 | |
| Simón Ríos Balderas | 1980–1982 | |
| Matías Leal Ríos | 1983–1985 | |
| René Salinas Alanís | 1986–1988 | |
| Simón Ríos Balderas | 1989–1991 | |
| María Elva Salinas de Hinojosa | 1992–1994 | |
| Guadalupe García Hinojosa | 1994–1997 | |
| Delia Rangel Ríos | 1997–2000 | |
| Jorge Alberto Cantú Cantú (El Queso - El Cheese) | 2000–2003 | |
| Homero Alanis Salinas | 2003–2006 | |
| Simón Ríos Rangel | 2006–2009 | |
| Ríos Rios (Lupe Rios) | 2009-2012 | |
| Simón Ríos Rangel | 2015-2018 | |
| Simón Ríos Rangel | 2018-2021 |