Geography Orange_County,_California

Three Arch Bay in Laguna Beach, Southern Orange CountyView of Newport Center and the Santa Ana Mountains from Newport HarborAerial view of an edge city: Irvine Business Complex (top), John Wayne Airport runway (upper center), South Coast Metro buildings (lower center) and below, the South Coast Plaza mall

According to the U.S. Census Bureau, the county has a total area of 948 batu persegi (2,460 km2), of which 791 batu persegi (2,050 km2) is land and 157 batu persegi (410 km2) (16.6%) is water.[20] It is the smallest county by area in Southern California. The average annual temperature is about 68 °F (20 °C).

Orange County is bordered on the southwest by the Pacific Ocean, on the north by Los Angeles County, on the northeast by San Bernardino County, on the east by Riverside County, and on the southeast by San Diego County.

The northwestern part of the county lies on the coastal plain of the Los Angeles Basin, while the southeastern end rises into the foothills of the Santa Ana Mountains. Most of Orange County's population reside in one of two shallow coastal valleys that lie in the basin, the Santa Ana Valley and the Saddleback Valley. The Santa Ana Mountains lie within the eastern boundaries of the county and of the Cleveland National Forest. The high point is Santiago Peak (5,689 kaki (1,734 m)[21]), about 20 mi (32 km) east of Santa Ana. Santiago Peak and nearby Modjeska Peak, just 200 kaki (60 m) shorter, form a ridge known as Saddleback, visible from almost everywhere in the county. The Peralta Hills extend westward from the Santa Ana Mountains through the communities of Anaheim Hills, Orange, and ending in Olive. The Loma Ridge is another prominent feature, running parallel to the Santa Ana Mountains through the central part of the county, separated from the taller mountains to the east by Santiago Canyon.

The Santa Ana River is the county's principal watercourse, flowing through the middle of the county from northeast to southwest. Its major tributary to the south and east is Santiago Creek. Other watercourses within the county include Aliso Creek, San Juan Creek, and Horsethief Creek. In the North, the San Gabriel River also briefly crosses into Orange County and exits into the Pacific on the Los Angeles-Orange County line between the cities of Long Beach and Seal Beach. Laguna Beach is home to the county's only natural lakes, Laguna Lakes, which are formed by water rising up against an underground fault.

Regions of Orange County

Orange County is sometimes divided into northern and southern regions. There are significant political, demographic, economic and cultural distinctions between North and South Orange County.[22] A popular dividing line between the two regions is the Costa Mesa Freeway.

North Orange County, including Anaheim, Fullerton and Santa Ana, was the first part of the county to be developed and is culturally closer to neighboring Los Angeles County. This region is more Hispanic (mostly Mexican) and Asian (predominantly Vietnamese and Korean)[23], more densely populated (Santa Ana is the fifth most densely-populated city in the United States with a population of over 200,000), younger, less wealthy and with higher unemployment. It has more renters, fewer homeowners and more registered Democrats as opposed to Republicans. There are notable exceptions to these general trends, such as strongly Republican Yorba Linda and affluent Anaheim Hills and Villa Park.[22] North Orange County is predominantly flat, giving way to the Santa Ana Mountains in the Northeast.

South Orange County is more residential, wealthier, more Republican, less racially diverse and more recently developed. Irvine, the largest city in the region, is an exception to some of these trends, being a major employment center and having an Asian plurality (although Irvine's Asian population tends to be East Asian rather than Southeast Asian). South Orange County almost always includes Irvine,[24] Newport Beach, and the cities to their southeast, including Laguna Beach, Mission Viejo, and San Clemente. Costa Mesa is sometimes included in South County,[25] although it is located predominantly to the west of the Costa Mesa Freeway.[26] Irvine is located in a valley defined by the Santa Ana Mountains and the San Joaquin Hills, while much of South Orange County is very hilly.

Another region of Orange County is the Orange Coast, which includes the six cities bordering the Pacific Ocean. These are (from northwest to southeast): Seal Beach, Huntington Beach, Newport Beach, Laguna Beach, Dana Point and San Clemente.

Commercial clusters — edge cities

Older cities like Santa Ana, Anaheim, and Fullerton have traditional downtowns dating back to the 19th century, with Downtown Santa Ana being the home of the county, state and federal institutions. However, far more commercial activity is concentrated in clusters of newer commercial development are found in the county's edge cities, the three largest being

Anaheim—Santa Ana edge city

Major facilities in the Anaheim–Santa Ana edge city, plus the locations of the adjacent downtownsMainPlace Mall

A contiguous strip of commercial development (an edge city) stretches from Disneyland through to MainPlace Mall along the I-5 Santa Ana Freeway,[27][28][29][30][31] straddling the city limits of Anaheim, Garden Grove, Orange, and Santa Ana, and in fact stretching between the original downtowns of those four cities.

Entertainment and cultural facilities include Disneyland Resort, Angel Stadium, Christ Cathedral (formerly Crystal Cathedral), City National Grove of Anaheim - a live concert venue, Discovery Cube Orange County, the Honda Center - home to the Anaheim Ducks of the NHL (National Hockey League), and the Anaheim Convention Center. Health care facilities include CHOC (Children's Hospital of Orange County), Kaiser Permanente Health Pavilion (Anaheim), St. Joseph Hospital (Orange), and the UCI Medical Center.

Retail complexes include Anaheim GardenWalk, Anaheim Marketplace (claiming to be the largest indoor swap meet in Orange County with more than 200 vendors), MainPlace Mall, Orange Town & Country, and The Outlets at Orange, originally a mall named "The City" which was the centerpiece of a planned, 1970s mixed-use development by the same name. There is commercial strip-style development including big box retailers along West Chapman Avenue in Orange (Marshalls, Ralphs), along Harbor Boulevard in Garden Grove (Burlington, Ross Dress for Less), and around Harbor Blvd. and Chapman Ave. in Anaheim (Target).

Major hotels line Harbor Boulevard from Disneyland south to Garden Grove: Grand Legacy at the Park, Hilton, Marriott, Courtyard, DoubleTree Suites, Hampton Inn, Hilton Garden Inn, Homewood Suites, Embassy Suites, Residence Inn, Hyatt Regency, Marriott Suites, Sheraton, and the Great Wolf Lodge. The Orange County Transit Authority studied the corridor as the possible route for a streetcar, a proposal that was dropped in 2018 due to opposition from Anaheim and other city governments.[32]

In addition to suburban-style apartment complexes, Anaheim's Platinum Triangle is undergoing transformation from a low-density commercial and industrial zone into a more urban environment with high-density housing, commercial office towers, and retail space. Anaheim envisions it as a "downtown for Orange County".[33] The 820 ekar (330 he) area undergoing this large-scale redevelopment includes the city's two major sports venues, the Honda Center and Angel Stadium of Anaheim.[34]

National protected areas