The Municipality of General Mariano Alvarez (GMA) is geographically located at coordinates approximately 120 degree 59’15’ longtitude and 14 degree 18’30’ latitude. It is at the northeastern boundaries of Cavite Province with Laguna Province. It is bounded on the north by the Municipality of San Pedro, Laguna on the east by the Municipality of Carmona, on the west by the Municipality of Dasmarinas and on the south by the Municipality of Silang. General Mariano Alvarez is approximately forty two (42) kilometers south of the City of Manila, the premier city of the country and seventeen (17) kilometers east of Trece Martirez City, the capital of the province. It is also approximate to the National Capital Region (NCR) of Metro Manila, the primate region of the country. The Municipality converges with Metro Manila, through its southern gateway of Alabang, Muntinlupa City. It is about 40 to 50 kilometers away from said convergence points. The Aguinaldo Highway, on the west and Governor’s Drive on the south, which connects the two major roads. It can also accessed through the Molino-Paliparan road, which cut across the inner eastern portion of Cavite on a north-south direction running parallel to the south Expressway and Aguinaldo Highway and joins Governor’s Drive on the south end. Modes of transportation are land vehicles.

General Mariano Alvarez has a total land area of 962 hectares more or less as per “Batasang Pambansa Bilang 76” dated June 13, 1980, which created the municipality. These areas are currently occupied by twenty-seven (27) barangays of which five (5) are considered Poblacion barangays and twenty-two (22) others are regular barangays.

The municipality has elongated shape with a north, northeastern orientation. It has a total length of about 7,040 meters and a width of about 780 meters at its smallest and 1,720 meters at its widest. The terrain is relatively flat plain from the south starting at the Governor’s Drive running north covering about one third (1/3) of the municipality’s length at Poblacion 5. From this point the terrain gradually begin to gently slope in one direction in the middle portion of the municipality, undulating and rolling to more than one direction towards the northeastern barangay of Epifanio Malia, portion of Francisco de Castro, Francisco Reyes and San Jose.Inland water bodies serve as natural boundaries with neighboring municipalities and drain its surface waters towards Manila Bay and Laguna Bay. These are Embarcadero River on the western boundaries with Dasmarinas and San Gabriel River on the eastern boundaries with Carmona. A major tributary, of San Gabriel River traverse the inner areas of the municipality from Francisco de Castro and Southwoods to Jacinto Lumbreras. The same tributary branches out at Inocencio Salud to serve as boundaries between the barangay of Col. J.P Elises and Aldiano Olaes, on the eastern side. Small streams crisscross the landscape forming natural drainage where waste drains from Manila Bay and Laguna de Bay. These water bodies run and form deep gullies which gave the land a mass ridge-like formation. Considering the height and mass of the water bodies, the ridge-like formation are highly elevated. Thus, the terrain as described above.Man-made physical changes, includes the presence of the Congressional Road which stretcher on full length of the municipality from the Governor’s Drive or the national highway in the south to Francisco de Castro on the north. It runs parallel to the water bodies mentioned above on the eastern side of the municipality. Structures such as houses, schools, commercial establishments, institutional buildings and industrial firms are located among this road, on gully sides of water. bodies and the top flat plain areas of the ridge. Open grasslands and agricultural areas can be found on the western near central portion of the municipality.

The slope of the municipality ranges from 0-3% to 3-8% broad to level nearly level are classified under 0-3% slope. These are generally the flat plain level lands on the southern portion from the Governor’s Drive extending inwards covering all Poblacion barangays, Gavino Maderan, Jacinto Lumbreras, Ramon Cruz, San Gabriel and Severino delas Alas, 3-5% slope are gently sloping areas with land sloping in one general direction. This areas compress the central portion of the municipality from Barangay Kapitan Kua, Pantaleon Granados and Marcelino Mimeje to Aldiano Olaes, Col. Jose P. Elises and portion of Foerillo Calimag, Macario Dacon and Benjamin Tirona. These also include Inocencio Salud and Bernardo Pulido.Areas on the north and northeastern side have slope of 5-8%. These are gently undulating and rolling lands sloping in more than one general direction. Portion of Baranay Feorillo Calimag, Macario Dacon and Benjamin Tirona and barangay of Francisco de Castro, Francisco Reyes, Epifanio Malia, Tiniente Tiago, Nicolasa Virata, Gregoria de Jesus and San Jose.

Gen. Mariano Alvarez was originally divided into 10 barangays (more appropriately, areas) that were parts of the Carmona Resettlement Project. It comprised the resettlement areas in Barangays San Jose, and San Gabriel, and a portion of Cabilang Baybay, a barangay of the municipality of Carmona. San Jose consists of Areas A and B, while San Gabriel is composed of Areas C, D, E, F, G, H, I, J, and K.On March 25, 1985, by virtue of legislative and administrative acts, a referendum was made to redivide the municipality into the current 27 barangays. They were named after the revolutionary leaders of the province of Cavite – including those related to the great general to whom the municipality was named after – and the barangay captains and other prominent personalities who led the former 10 barangays. The first appointed officials of the barangays were sworn into office en masse on June 27, 1985. Five of the current barangays are classified as poblacion barangays, or those that are within the municipality’s central area. The 22 others are ordinary barangays.

The 27 barangays, are as follows:

Aldiano Olaes
Barangay 1 Poblacion (Area I)
Barangay 2 Poblacion
Barangay 3 Poblacion
Barangay 4 Poblacion
Barangay 5 Poblacion
Benjamin Tirona (Area D)
Bernardo Pulido (Area H)
Epifanio Malia
Francisco De Castro
Francisco Reyes
Fiorello Calimag (Area C)
Gavino Maderan (Area J)
Gregoria De Jesus
Inocencio Salud (Area F)
Jacinto Lumbreras (Area J)
Kapitan Kua (Area F)
Koronel Jose P. Elises (Area E)
Macario Dacon (Area D)
Marcelino Memije (Area H)
Nicolasa Virata (San Jose)
Pantaleon Granados (Area G)
Ramon Cruz (Area J)
San Gabriel (Area K)
San Jose
Severino De Las Alas (Area J)
Tiniente Tiago

Leoniso G. Virata (1981–1986; 1988–1998)
Tomas E. Abueg (officer-in-charge, 1986–1987)
Severino P. Tamala (officer-in-charge, 1987–1988)
Antonio G. Virata (1998–2001)
Walter D. Echevarria, Jr. (2001–2010)
Leonisa Joana B. Virata (June 30, 2010–2013)
Walter D. Echevarria, Jr. (2013–up to present)