Irwindale Event Center

South Monrovia Island () is a census-designated place in Los Angeles County, California. It sits at an elevation of 384 feet (117 m). It is bounded to the west and north by Monrovia, to the east by Duarte, and to the south by Irwindale. The 2010 United States census reported that South Monrovia Island's population was 6,777.

The Los Angeles County Department of Public Health (DPH) provides public health services to Los Angeles County residents. Barbara Ferrer is the Director for the Los Angeles County Department of Public Health. Muntu Davis, MD, MPH is the Los Angeles County Public Health Officer. Jeffrey Gunzenhauser is the Interim Health Officer and Medical Director for Los Angeles County. With a budget of 893 million dollars, Public Health has 39 programs and 14 public health centers to serve 10 million LA County residents.Public Health programs include: Environmental Health: operates restaurant rating system and grading systems for apartments and rental homes; inspects sewage treatment and water plants; enforces state and local environmental laws Chronic Disease & Injury Prevention; including Tobacco Control and Prevention, Nutrition, Senior Health, Physical Activity Promotion and Injury and Violence Prevention Communicable Disease Control & Prevention; including Acute Communicable Disease, Immunizations, Veterinary Public Health, Tuberculosis Control Program, and Public Health Laboratory. Substance Abuse Prevention & Control HIV & STD Programs Community Health Services Health Assessment & Epidemiology Health Facilities Inspection Children's Medical Services Maternal, Child & Adolescent Health Emergency Preparedness and Response

The San Gabriel Valley (Spanish: Valle de San Gabriel), often referred to by its initials as S.G.V., is one of the principal valleys of Southern California, lying immediately to the east of the eastern city limits of the city of Los Angeles and occupying the vast majority of the southeastern part of Los Angeles County, California. Surrounding features include: San Gabriel Mountains on the north, San Rafael Hills to the west, with Los Angeles Basin beyond, Crescenta Valley to the northwest, Puente Hills to the south, with the coastal plain of Orange County beyond, Chino Hills and San Jose Hills to the east, with the Pomona Valley and Inland Empire beyond. The city limits of Los Angeles bordering its western edge.The San Gabriel valley derives its name from the San Gabriel River that flows southward through the center of the valley, which itself was named for the Spanish Mission San Gabriel Arcángel originally built in the Whittier Narrows in 1771. At one time predominantly agricultural, the San Gabriel Valley is today almost entirely urbanized and is an integral part of the Greater Los Angeles metropolitan area. It is one of the most ethnically diverse regions in the country. About 200 square miles (520 km2) in size, the valley includes thirty-one cities and five unincorporated communities. It is located entirely in Los Angeles County, California. Pasadena is the largest city in the San Gabriel Valley. Pasadena was incorporated in 1886, making it the fourth city incorporated in Los Angeles County, California, following Los Angeles, Santa Ana, and Anaheim (Santa Ana and Anaheim are both now located in Orange County, which broke off in 1889). More recently, statewide droughts in California have further strained the San Gabriel Valley’s and Los Angeles County’s water security.

Santa Fe Dam is a flood-control dam on the San Gabriel River located in Irwindale in Los Angeles County, California, United States. For most of the year, the 92-foot (28 m)-high dam and its reservoir lie empty, but can hold more than 45,000 acre-feet (56,000,000 m3) of water during major storms. During the dry season, the basin behind the dam is used for groundwater recharge, as well as various recreational activities.

Area code 626 is a telephone area code in the North American Numbering Plan for most of the San Gabriel Valley in the U.S. state of California. The numbering plan area also comprises nearby areas in the northeastern portion of Los Angeles County, California, including Arcadia, Monrovia, El Monte, most of Pasadena and West Covina. The numbering plan area was split from that of area code 818 on June 14, 1997.

Irwindale is a city in the San Gabriel Valley, in Los Angeles County, California. The population was 1,422 at the 2010 census, down from 1,446 at the 2000 census. The ZIP Codes serving the area are 91010, which is shared with Duarte, 91702, which is shared with Azusa, and 91706, which is shared with Baldwin Park. With relatively few residents, Irwindale consists mostly of rock quarries, which are the major revenue source for the city. The Irwindale Event Center is also located in the city, as is the Santa Fe Dam Recreation Area near the San Gabriel River, a plant of the Miller Brewing Company, and a plant of the Huy Fong Foods sriracha sauce company. The city became the new permanent site for the annual Renaissance Pleasure Faire of Southern California in 2005, after it moved from its previous home at the Glen Helen Regional Park in Devore. Irwindale, is a full-service city, it has local police and library services. There is a skate park, a teen center, a senior center, public gymnasium and a public pool. The majority of the housing is found on the southeastern portion of the city, near Arrow Highway and north of Cypress Street near Irwindale Avenue. There is also a tract of housing on the southeastern corner of Meridian St in the northwestern portion of the city, being distant from the rest of the housing.

Mayflower Village is a census-designated place (CDP) in the San Gabriel Valley, in Los Angeles County, California, United States. The population was 5,515 at the 2010 census, up from 5,081 at the 2000 census. The ZIP Codes serving the community are 91006, which is served by Arcadia and 91016, which is served by Monrovia.

The Irell & Manella Graduate School of Biological Sciences (formerly the City of Hope Graduate School of Biological Sciences) is a graduate school for biology in the City of Hope National Medical Center in Duarte, California.

City of Hope is a private, non-profit clinical research center, hospital and graduate school located in Duarte, California, United States. The center's main campus resides on 110 acres (45 ha) of land adjacent to the boundaries of Duarte and Irwindale, with a network of clinical practice locations throughout Southern California, satellite offices in Monrovia and Irwindale, and regional fundraising offices throughout the United States.City of Hope is best known as a cancer treatment center. It has been designated a Comprehensive Cancer Center by the National Cancer Institute. City of Hope has also been ranked one of the nation's Best Cancer Hospitals by U.S. News & World Report for over ten years and is a founding member of the National Comprehensive Cancer Network. City of Hope played a role in the development of synthetic human insulin in 1978. The center has performed 13,000 hematopoietic stem cell transplants as of 2016 with patient outcomes that consistently exceed national averages.

The Beckman Research Institute of City of Hope (BRI) is a not-for-profit medical research facility located at and partnering with the City of Hope National Medical Center in Duarte, California, United States. It is dedicated to studying normal and abnormal biological processes which may be related to cancer, diabetes, HIV/AIDS and other life-threatening diseases. Both basic and clinical research are carried out in cooperation with the City of Hope National Medical Center. The institute itself is organized into more than 20 departments and divisions. As of 2021, the director is Steven T. Rosen. The Beckman Research Institute also hosts the Irell & Manella Graduate School of Biological Sciences whose founding dean was Arthur Riggs.

Monrovia Airport, also called the Foothill Flying Field, was an American airport in Monrovia, California active from 1928 to 1952.

Monrovia station is an at-grade light rail station on the A Line of the Los Angeles Metro Rail system. It is located at the intersection of Duarte Road and Myrtle Avenue in Monrovia, California, after which the station is named. This station opened on March 5, 2016, as part of Phase 2A of the Gold Line Foothill Extension Project.