Rancho Vallecitos de San Marcos

Vintage Cellars (U.S) is a wine storage design and retail company that specializes in custom wine cellars. The company was founded in 1990 by Gene Walder. Vintage Cellars, which is located in San Marcos, California, is also a retailer of wine storage cabinets, wine racks, and wine cooling systems. The company has designed and constructed wine cellars throughout the nation and is one of the longest-standing wine storage specialty businesses in the country. Though it began as a traditional brick and mortar business, the company now also does much of its business through its website.

Nordahl Road station is a station served by North County Transit District's SPRINTER hybrid rail line. It straddles the city limits of San Marcos and Escondido, California, with its mailing address in Escondido. The station is located between Barham Drive and Auto Park Way/Nordahl Road, both of which intersect East Mission Road. It consists of a single platform and track.

Mission Hills High School is a high school located in San Marcos, California. It first opened in August 2004 on 40 acres (160,000 m2) of land that was previously part of the local Hollandia dairy. It has many career-oriented programs, such as the Academies of Business, Law Enforcement, Health Essentials, Fire Technology, and Culinary Arts.

The Lost Abbey Brewing Company is a brewery in San Marcos, run by Director of Brewery Operations Tomme Arthur. The Lost Abbey specializes in producing Belgian-inspired beers, barrel-aged beers, and sours. The Lost Abbey is co-located with Port Brewing Company in a facility that previously housed Stone Brewing Co.

Port Brewing Company is a craft brewery headquartered in San Marcos, California. It was founded in 2006 in San Marcos, San Diego County, California. The brewery also produces beers under the name Lost Abbey Brewing.

Escondido Adventist Academy (EAA) is a private, Seventh-day Adventist-governed Christian school in Escondido, California, serving students in grades K-12. It is operated by a school board which represents the 14 Seventh-day Adventist churches in San Diego North County. It is a part of the Seventh-day Adventist education system, the world's second largest Christian school system. Escondido Adventist Academy is a part of the Southeastern California Conference of the SDA School System. The school began under the name "Escondido Junior Academy". It moved to West 9th Avenue in Escondido in September of 1956, where it operated grades 1–8. Grade 9 was added in 1957 and grade 10 in 1958. Two new classrooms, a workshop and recreation area were added in 1959 (Times Advocate article, July 6, 1959). Then in 1982, it added Kindergarten and grades 11 and 12, a gymnasium and a two-story classroom building. It also changed its name to "Escondido Adventist Academy" to reflect its new senior academy status. In 2008, the school sold its 9th Avenue campus to a Mercedes Benz dealership and moved to a new facility on Deodar Road, as part of a joint campus with the Escondido Seventh-day Adventist Church. The school is accredited by the Board of Regents of the General Conference of SDAs and the Western Association of Schools and Colleges (WASC).

Cal State San Marcos station is an elevated railway station in San Marcos, California, the only elevated station along the North County Transit District's SPRINTER hybrid rail line, was commenced in 2005. The station sits on a loop of the San Diego Northern Railway's Escondido Subdivision that crosses over State Route 78 to serve the California State University, San Marcos campus, which is located southwest of the station. On campus days, shuttle services are available to ferry students from the train station to the heart of the CSUSM campus and vice versa.

KFSD (1450 AM) is a radio station based in North County, San Diego, California. It is owned by Raul Caro and Stephen Beuerle, through licensee IHS Media, and is currently off the air. The station's studios are located in Carlsbad, while the transmitter is located in an industrial park in Escondido.From 2004 until February 1, 2007, KFSD was a classical music radio station. KFSD stands for "First in San Diego," dating back to the first commercial broadcast license in San Diego. The KFSD call letters were originally assigned in 1926 to AM 620 (later 600). The KFSD call sign was on 600 from 1926–1963. KFSD was also on FM 94.1 from 1948 to 1963, then re-appeared on 94.1 in 1973 until 1997. The KFSD-TV call sign was on Channel 10 from 1953–1963. The three KFSD stations switched to the KOGO call sign in 1963, as information about San Diego and its people were fed into a new IBM computer and asked for the perfect call letters for these stations, and it chose KOGO. The last iteration of KFSD-FM 94.1 was as a classical station. KFSD had a good solid audience, but the station was bought by Nationwide Communications (division of Nationwide Insurance). Nationwide felt a change to more aggressive music was a better choice for the only 100 kW station in San Diego. KFSD was changed to KXGL, and became the Eagle 94.1. The Eagle's format proved to be a failure, and in 1998 became KJQY/KJOY 94.1.

Stone Brewing (formerly Stone Brewing Co.) is a brewery headquartered in Escondido, California, USA. Founded in 1996 in San Marcos, California, it is the largest brewery in Southern California. Based on 2020 sales volume it is the ninth largest craft brewery in the United States.The brewery's first beer was Stone Pale Ale, which was considered to be its flagship ale until it was retired in 2015. The company's best known brand is Arrogant Bastard Ale, which has been described as a "watershed beer" that "put San Diego on the craft brew map." Most of Stone's beers are characteristic of west-coast craft brews, meaning that they have a high hop content. Compared to the macro-produced lagers, many Stone brews feature alcohol percentages that are well above average, ranging from 4.8% to 13%.Stone Brewing is rated as a "world class brewery" by the two largest beer enthusiast websites, RateBeer and BeerAdvocate. Stone Brewing has been voted by the readers of Beer Advocate as the #1 "All Time Top Brewery on Planet Earth."In June 2022, Stone and Sapporo Breweries announced that they had reached an agreement for Sapporo to purchase Stone Brewing, with the purchase expected to close in August 2022.

California State University San Marcos (CSUSM or Cal State San Marcos) is a public university in San Marcos, California. It was founded in 1989 as the 21st campus in the California State University (CSU) system. CSUSM offers 43 bachelor's degree programs, 23 master's degree programs, an Ed.D. program, and 13 teaching credentials. The university has four colleges: the College of Business Administration; the College of Science, Technology, Engineering and Mathematics; the College of Humanities, Arts, Behavioral and Social Sciences; and the College of Education, Health and Human Services. In January 2021, the university had 979 faculty. The university is a Hispanic-serving institution.

San Marcos Civic Center station is a station on North County Transit District's SPRINTER hybrid rail line. It serves the heart of San Marcos, California. It is located at the intersection of San Marcos Boulevard and West Mission Road. A preview service stopped at San Marcos Civic Center on December 28, 2007, and regular service commenced March 9, 2008.

The University of Saint Katherine (USK) is a private, non-profit undergraduate and graduate university located in San Marcos, California. Founded by Frank J. Papatheofanis, MD, PhD it opened in 2011, and has grown each year in enrollment from its inaugural class of 11 in 2011 to 308 in 2022. The university's mission is to provide a balanced education in the liberal arts and sciences, founded and rooted in the life of the Eastern Orthodox tradition, although the school is not under the omophorion of any Orthodox bishop, and Orthodox students and faculty are in the minority at the school; the University accepts students of all faiths. Inquiry Seeking Wisdom is the current motto of the institution. The original motto "For Christ is our Life" was reserved for a new school of theology that is being formed.