Charter Oak, CA

About the city
Geography
Climate and weather
Landmarks and Attractions
Transport
Local Cuisine and Culinary Traditions
Sport and Athletic Legends
Healthcare Facilities

Charter Oak is an unincorporated community and census-designated place in Los Angeles County, a suburban "bedroom community" in California's San Gabriel Valley.

About the city

Official Status and Administrative Affiliation

Official Name: Charter Oak. It is an unincorporated community and census-designated place (CDP), meaning it is not part of any incorporated city and is governed directly by Los Angeles County . Locals often refer to it as the "unincorporated part of Covina" .
Administrative Center Status: Charter Oak is not a capital or administrative center. It is a community within Los Angeles County in the state of California, USA. The region is globally famous as the center of the American entertainment industry, a hub for technology and innovation, and a diverse cultural melting pot.
Location: It is situated in Los Angeles County, California, United States .

Date of Foundation and Age

Charter Oak began as a small agricultural settlement, primarily centered around citrus orchards. Its development as a recognized community is tied to the growth of the San Gabriel Valley. It first appeared as a census-designated place in the 1980 U.S. Census . As of 2026, the community as a statistical area is 46 years old.

Geographic Location and Coordinates

Geographic Coordinates: 34°6′5″N 117°51′28″W (34.101308, -117.857656) .
Natural Surroundings: Charter Oak is located in the eastern San Gabriel Valley. The terrain is primarily flat, though the South Hills of Glendora form much of its northern border . The area features a small valley with Walnut Creek flowing through it. Another major water feature is the San Dimas Wash, a concrete-lined flood control channel that was formerly the San Dimas River, a tributary of the San Gabriel River .
Elevation: The community sits at an elevation of 761 feet (232 meters) above sea level .
Settlement Type: From a geographic perspective, Charter Oak is a suburban residential area.

City Type and Economic Specialization

Charter Oak is primarily a residential "bedroom community" for the greater Los Angeles metropolitan area . Its economy is not based on local industry but on providing housing for workers employed elsewhere in the region. Since the 1960s, commercial agriculture has nearly disappeared . The community is also known for being home to Charter Oak Gymnastics, a U.S. National Team training center since 1989 that has produced elite athletes .

Population and Demographics

Population: As of the 2020 census, the population of Charter Oak was 9,739 .
Population Class: With fewer than 10,000 residents, Charter Oak is classified as a small town or small community.
Demographic Features: The community is diverse and has seen significant demographic shifts. In the 2020 census, 57.5% of the population identified as Hispanic or Latino, a substantial increase from 36.6% in 2000 . Other significant groups include White (23.38% Non-Hispanic) and Asian (11.43%) residents .

"City's Calling Card" (Briefly)

Charter Oak is a quiet, residential pocket of the San Gabriel Valley, known as a convenient and family-oriented suburb of Los Angeles. Its identity is tied to its excellent local school district and its surprising claim to fame as a national training ground for Olympic gymnasts, offering a small-town feel within the vast Los Angeles metropolis.

Geography

Mountains and Mountain Ranges

While there are no mountains within Charter Oak itself, the South Hills of Glendora form much of its northern border, providing a scenic backdrop . A short drive north leads into the San Gabriel Mountains, a prominent range offering extensive hiking trails and wilderness areas. A notable peak in the range is Mount Baldy (Mount San Antonio) , the highest point in Los Angeles County at 10,064 feet (3,068 m), a popular destination for hikers and skiers.

Water Bodies (Rivers, Lakes, Waterfalls)

Walnut Creek: A small stream that flows through a valley in the southeast quadrant of Charter Oak .
San Dimas Wash: A significant water feature, this is a concrete-lined flood control channel that runs through the area. It was formerly the natural San Dimas River, a tributary of the larger San Gabriel River .
San Gabriel River: A major river in Southern California that flows through the region, with recreational areas and bike paths accessible a short distance from Charter Oak.

Deserts, Canyons, and Unique Landscapes

The area does not contain deserts or canyons, but the nearby San Gabriel Mountains National Monument offers dramatic canyon landscapes.

National and Nature Parks

While there are no national parks within the community, Charter Oak is within easy driving distance of several state and national parks and forests.

Angeles National Forest: This vast national forest manages the San Gabriel Mountains and offers countless opportunities for hiking, camping, and fishing. It is located just north of Charter Oak.
San Gabriel Mountains National Monument: Established in 2014, this monument protects the ecological and cultural resources of the mountains north of the community.

Beaches and Coastlines

As an inland suburb, Charter Oak has no beaches of its own. However, it is approximately 26 miles (42 km) from the coast, making the famous beaches of Los Angeles County accessible . These include:

Santa Monica Beach and Pier: An iconic Southern California beach with a historic pier, bike path, and vibrant atmosphere.
Venice Beach: World-famous for its boardwalk, street performers, skate park, and eclectic culture.

Islands and Archipelagos

There are no islands in this landlocked community.

Climate and weather

Climate Type and General Characteristics

Charter Oak has a hot-summer Mediterranean climate (Köppen climate classification: Csa) , characterized by short, hot, arid summers and long, cool, partly cloudy winters . It enjoys a significant amount of sunshine throughout the year.

Average Temperatures by Month

Temperatures in Charter Oak are mild year-round, with a wide diurnal range.

Hottest Month: August, with an average high of 91°F (33°C) and an average low of 66°F (19°C) .
Coldest Month: December, with an average high of 67°F (19°C) and an average low of 45°F (7°C) .
Summer (June-September): Average daily highs range from 84°F to 91°F (29-33°C), with lows in the 60s°F .
Winter (December-March): Average daily highs are in the upper 60s°F to low 70s°F (19-22°C), with nighttime lows occasionally dropping to around 45°F (7°C) .
Extreme Temperatures: Temperatures rarely drop below 38°F (3°C) or rise above 100°F (38°C) .

Precipitation and Humidity

Rainfall: The community experiences significant seasonal variation in rainfall. The wettest month is February, with an average of 3.0 inches (75 mm) of rain . The summer months are extremely arid, with July averaging just 0.0 inches (1 mm) of rain . The rainy season generally lasts from late October to late April.
Humidity: Humidity levels are generally low, especially in the summer, which makes the heat feel less oppressive than in more humid climates. Muggy conditions are extremely rare .

Sunny Days and UV Index

Charter Oak enjoys a high number of sunny days. The clearest month is September, with the sky clear, mostly clear, or partly cloudy 90% of the time . The cloudiest month is February. The UV index is typically high to very high on most sunny days, especially during the summer months.

Seasonality and Best Time to Visit

Based on the tourism score, the best time for warm-weather activities is from late May to mid-October .

Spring (March-May): Temperatures warm up nicely, with average highs rising from 71°F to 79°F (22-26°C). Rainfall decreases significantly, and the hillsides are often green from the winter rains. Excellent time for hiking in the nearby mountains.
Summer (June-September): Hot and dry with abundant sunshine. Perfect for pool days, beach trips, and enjoying indoor attractions with air conditioning. Nights are cool and pleasant.
Fall (October-November): Temperatures remain warm in October and become milder in November. This is a very pleasant time to visit, with clear skies and comfortable conditions for outdoor exploration.
Winter (December-March): Cool and the most likely time for rain. Daytime temperatures are still mild and pleasant for outdoor activities, but evenings are chilly. This is the off-season for tourism.

Specific Weather Phenomena

Charter Oak is not typically subject to extreme weather phenomena like hurricanes or tornadoes. However, the region can experience Santa Ana winds in the fall, which are strong, dry offshore winds that can elevate fire danger.

Landmarks and Attractions

The Namesake Charter Oak (Historical Context)

While the community of Charter Oak is not home to the original tree it is named after, the name itself has a fascinating historical origin tied to a famous California Historical Landmark. The original "Charter Oak" or Tulare County Election Tree (California Historical Landmark No. 410) is located in Visalia, Tulare County . Under this tree on July 10, 1852, an election was held that led to the founding of Tulare County . The name was likely brought south by early settlers or used to evoke a sense of history and stability, though the specific reason it was chosen for this community is not documented in the provided sources.

Parks and Recreation

Charter Oak and its immediate surrounding area offer several local parks for residents and visitors.

Kelby Park: A local park providing green space and recreational facilities within the community .
Charter Oak Park: Another community park that serves as a gathering place for local residents .
City Park: Located in nearby Covina, offering additional amenities .

Local Points of Interest

Charter Oak Gymnastics: This local gym is a point of pride for the community. Established as a U.S. National Team training center in 1989, it has produced elite athletes such as national champion Vanessa Atler and Olympian Jamie Dantzscher . For gymnastics enthusiasts, it's a notable local landmark.
Covina Metrolink Station: The nearest train station, located about 1.1 miles away, is a transportation hub for commuters traveling to Los Angeles and San Bernardino . It represents the community's role as a bedroom community for the region.

Nearby Attractions

Charter Oak's location in the San Gabriel Valley puts it within a short drive of numerous major Southern California attractions.

Raging Waters San Dimas: A large water park located in the neighboring city of San Dimas.
Bonelli Park (Frank G. Bonelli Regional Park): A massive regional park in San Dimas/Puddingstone Lake area offering boating, fishing, camping, and miles of trails.
Downtown Los Angeles: Approximately 26 miles west, offering world-class museums, dining, entertainment, and professional sports .

Transport

Major Airports in the City and Region

Charter Oak has no airports of its own, but it is well-situated for access to several major airports in the Los Angeles area.

LA/Ontario International Airport (ONT): Located approximately 20-25 miles east, this is often the most convenient airport for residents and visitors, handling a significant volume of domestic and some international cargo flights. Code IATA: ONT.
Hollywood Burbank Airport (BUR): Located about 35 miles northwest, a popular alternative for domestic flights.
Los Angeles International Airport (LAX): Located about 42 miles southwest, it is the primary international airport for the region and one of the busiest in the world. Code IATA: LAX. Travel time can vary significantly depending on traffic.
John Wayne Airport (SNA): Located in Orange County, about 35-40 miles south, serving many domestic and some international destinations.

Major Railway Stations and Depots

Covina Metrolink Station: This is the primary rail station serving the Charter Oak area. Located approximately 1.1 miles away, it is a stop on the San Bernardino Line . This line provides commuter rail service to Los Angeles Union Station and San Bernardino, with connections to the rest of the Metrolink and Amtrak network.

Public Transportation System (Bus)

Public transit in Charter Oak is primarily provided by Foothill Transit and other local services, connecting the community to the wider region.

Foothill Transit: Numerous bus lines serve stops in and around Charter Oak. Key routes include the 488 (Glendora-West Covina-El Monte Station) and the 490 Express (Glendora - Covina - Downtown LA) . Local services like the 284 and midday shuttles also operate in the area .

Major Highways and Freeways

Charter Oak is strategically located near several major freeways that provide access to all of Southern California.

Interstate 210 (I-210) / Foothill Freeway: This major east-west freeway forms the northern boundary of the historical Charter Oak area . It connects the community to Pasadena and Los Angeles to the west and San Bernardino to the east.
Interstate 10 (I-10) / San Bernardino Freeway: Located a few miles south of Charter Oak, this is another crucial east-west artery running from Los Angeles to the Inland Empire.
State Route 57 (SR 57) / Orange Freeway: Located just east of the area, this freeway provides a direct route south to Orange County.
State Route 71 (SR 71) / Chino Valley Freeway: Also accessible nearby, connecting to the Pomona Valley and points south.

Other Transport Options

Taxi and Ride-Sharing Services (Uber/Lyft): Widely available and a common way to get to and from the nearby Metrolink station or local destinations.

Local Cuisine and Culinary Traditions

The Charter Oak Restaurant

The primary culinary destination associated with the Charter Oak area is The Charter Oak restaurant, located in St. Helena, California, within the renowned Napa Valley . While geographically distinct from the unincorporated community of Charter Oak in Covina, this acclaimed restaurant shares its name and has become a culinary landmark in its own right. It is a celebrated establishment known for its rustic elegance and focus on high-quality, locally-sourced ingredients .

The restaurant's philosophy is centered on a massive wood-fired hearth, which imparts a smoky depth to many dishes . Chef Christopher Kostow, a name associated with Michelin-starred dining, leads the kitchen, creating a menu that is both approachable and sophisticated . The restaurant operates its own 3.5-acre farm just half a mile away, providing ultra-fresh produce that is the star of many dishes .

The Cheeseburger: This has achieved cult status and is one of the restaurant's most famous offerings . It's a classic West Coast "smash-style" burger with two thin patties, melted cheese, and a generous amount of relish, all served on a soft, pillowy milk bread bun . Diners consistently rave about it, with some calling it a "must-stop" dish when in wine country .
Freshly Baked Sourdough with House-Cultured Butter: Considered an absolute must-try, the bread is baked fresh and served with a uniquely flavorful butter made in-house. Reviewers often describe it as "AMAZING" and worth the extra charge .
Steak Tartare: This dish is repeatedly highlighted as exceptional. The beef is mixed with a smoky mayonnaise that has been "charred" in the hearth fire, adding a unique depth of flavor, and is served with toasted brioche .
Raw Vegetables from Their Farm: A signature dish that embodies the restaurant's farm-to-hearth concept. It's a simple yet profound selection of the freshest, most tender seasonal vegetables from their garden, often served with an addictive fermented soy or sesame dip .
Jersey Cow's Milk Soft Serve: This dessert is a surprising favorite, with one server even calling it her favorite item on the whole menu . It's a creamy, dreamy treat made from a nearby dairy's milk and often drizzled with intensely fragrant pecan oil .

The restaurant offers a family-style dining experience in a warm, barn-like space, making it a perfect spot for both special occasions and casual meals. It also features a lovely outdoor patio and a bar program with creative cocktails and an extensive local wine list .

Sport and Athletic Legends

High School Sports Teams

For the unincorporated community of Charter Oak in Covina, local sports are centered around Charter Oak High School. The school's athletic teams, known as the Charter Oak Chargers, are an active part of the community and compete in the CIF Southern Section .

The Chargers field teams in a variety of sports, providing local youth with opportunities for competition and achievement. These activities are a focal point for community spirit in the area .

Track and Field: The Charter Oak High School track and field team has a busy schedule, participating in meets like the Arcadia Mini Meet, the Colt Classic, and the Covina Invitational, as well as league championships .
Girls Volleyball: The Chargers girls volleyball team is competitive, having qualified for the CIF Southern Section Girls Volleyball Division 6 Championships .
Boys Water Polo: The boys water polo team also competes, with a season record placing them within their league .

Sports Facilities

Charter Oak High School: The school itself serves as the primary athletic hub, with facilities including a track and field, a gymnasium for volleyball, and a pool for water polo. It is located at 1430 E. Covina Blvd., Covina, CA 91723 .

Healthcare Facilities

Aurora Charter Oak Hospital

Charter Oak is home to a significant behavioral health facility, Aurora Charter Oak Hospital. Located in Covina at 1161 East Covina Boulevard, this hospital is a key provider of mental health and substance use disorder services for the San Gabriel Valley and broader Southern California region .

The hospital is accredited by The Joint Commission, a testament to its quality and compliance with national healthcare standards. It holds accreditations for both its Hospital program and its Behavioral Health Care and Human Services program .

Aurora Charter Oak Hospital offers a comprehensive range of services for individuals of all ages :

Inpatient Psychiatric Care: Provides acute, 24-hour stabilization in a safe and structured environment for both adults and children/adolescents (ages 9-17), who are housed separately from adults .
Addiction and Chemical Dependency Services: Offers a full spectrum of care, including detoxification, residential treatment, and partial hospitalization programs for adults .
Child and Adolescent Services: Specializes in treating young people with acute psychiatric issues and those with co-occurring mental health and substance use problems .
Residential Treatment Center (RTC): An adjacent facility that provides a structured, residential setting for individuals committed to recovery from addiction, with an average length of stay between 14 and 28 days .

The facility accepts a wide variety of insurance plans and is known for its compassionate, family-inclusive approach to treatment, offering 24/7 free and confidential assessments .