San Martin is a census-designated place (CDP) in Santa Clara County, California, United States. It takes its name from St. Martin of Tours, the patron saint of early pioneer Martin Murphy, who built the first Catholic church in the area. The community has been considering incorporating into either a city or town since 2004, but no official action had been taken by the end of 2010. The population was 7,027 at the 2010 census.
Like neighboring Morgan Hill and Gilroy, San Martin is a large producer of garlic, table mushrooms, and wine. It is also home to the volunteer-run Wings of History aviation museum, located next to San Martin Airport. Santa Clara County changed the facility’s name from South County Airport in January 2014.
San Martin is located at 37°05′16″N 121°36′00″W (37.087746, -121.600020). It is approximately 48 km (30 mi) south of San Jose, California, 11 km (6.8 mi) north of Gilroy, California, and 24 km (15 mi) inland from the Pacific Coast. Lying in a roughly 6 km-wide (4-mi-wide) southern extension of the Santa Clara Valley, it is bounded by the Santa Cruz Mountains to the west and the Diablo Range to the east.
San Martin lies at an elevation of about 86 m (282 ft) above MSL
According to the United States Census Bureau, the CDP has a total area of 11.6 square miles (30 km2), all of it land.
Due to the moderating influence of the Pacific Ocean, San Martin enjoys a warm, Mediterranean climate. Temperatures range from an average midsummer maximum of 90.2°F (32.3°C) to an average midwinter low of 33.6 °F (0.9 °C). Average annual rainfall is 480 mm (18.9 in), and the summer months are typically dry. Snowfall is rare, about once every 20 years, and is light and short-lived when it occurs. Summer months are characterized by coastal fog which arrives from the ocean around 10 p.m. and dissipates the next morning by 10 a.m. Winter months have many sunny and partly cloudy days, with frequent breaks between rainstorms. The local terrain is inconducive to tornadoes, severe windstorms and thunderstorms. The local climate supports chaparral and grassland biomes, with stands of live oak at higher elevations.
The 2010 United States Census reported that San Martin had a population of 7,027. The population density was 606.0 people per square mile (234.0/km²). The racial makeup of San Martin was 4,329 (61.6%) White, 27 (0.4%) African American, 71 (1.0%) Native American, 470 (6.7%) Asian, 18 (0.3%) Pacific Islander, 1,752 (24.9%) from other races, and 360 (5.1%) from two or more races. Hispanic or Latino of any race were 3,249 persons (46.2%).
The Census reported that 6,896 people (98.1% of the population) lived in households, 114 (1.6%) lived in non-institutionalized group quarters, and 17 (0.2%) were institutionalized.
There were 1,993 households, out of which 812 (40.7%) had children under the age of 18 living in them, 1,267 (63.6%) were opposite-sex married couples living together, 199 (10.0%) had a female householder with no husband present, 124 (6.2%) had a male householder with no wife present. There were 131 (6.6%) unmarried opposite-sex partnerships, and 14 (0.7%) same-sex married couples or partnerships. 279 households (14.0%) were made up of individuals and 98 (4.9%) had someone living alone who was 65 years of age or older. The average household size was 3.46. There were 1,590 families (79.8% of all households); the average family size was 3.70.
The population was spread out with 1,780 people (25.3%) under the age of 18, 713 people (10.1%) aged 18 to 24, 1,613 people (23.0%) aged 25 to 44, 2,098 people (29.9%) aged 45 to 64, and 823 people (11.7%) who were 65 years of age or older. The median age was 38.5 years. For every 100 females there were 103.9 males. For every 100 females age 18 and over, there were 106.9 males.
There were 2,122 housing units at an average density of 183.0 per square mile (70.7/km²), of which 1,309 (65.7%) were owner-occupied, and 684 (34.3%) were occupied by renters. The homeowner vacancy rate was 1.9%; the rental vacancy rate was 1.7%. 4,491 people (63.9% of the population) lived in owner-occupied housing units and 2,405 people (34.2%) lived in rental housing units.
As of the census of 2000, there were 4,230 people, 1,210 households, and 994 families residing in the CDP. The population density was 766.4 people per square mile (295.9/km²). There were 1,254 housing units at an average density of 227.2 per square mile (87.7/km²). The racial makeup of the CDP was 65.46% White, 0.83% African American, 1.63% Native American, 6.12% Asian, 0.24% Pacific Islander, 20.97% from other races, and 4.75% from two or more races. Hispanic or Latino of any race were 39.41% of the population.
There were 1,210 households out of which 37.4% had children under the age of 18 living with them, 67.2% were married couples living together, 9.8% had a female householder with no husband present, and 17.8% were non-families. 12.6% of all households were made up of individuals and 3.9% had someone living alone who was 65 years of age or older. The average household size was 3.44 and the average family size was 3.66.
In the CDP, the population was spread out with 28.3% under the age of 18, 9.2% from 18 to 24, 27.6% from 25 to 44, 26.7% from 45 to 64, and 8.2% who were 65 years of age or older. The median age was 36 years. For every 100 females there were 103.7 males. For every 100 females age 18 and over, there were 101.6 males.
The median income for a household in the CDP was $70,064, and the median income for a family was $70,708. Males had a median income of $56,625 versus $34,792 for females. The per capita income for the CDP was $25,944. About 5.2% of families and 8.4% of the population were below the poverty line, including 4.8% of those under age 18 and 10.4% of those age 65 or over. According to Forbes Magazine, San Martin is rated as one of the country’s most expensive ZIP codes with a median home price of $824,390 in 2010, despite a drop in home value of almost 20% from 2008.