Corona (Spanish for ''crown'') is a city in Riverside County, California, United States. As of the 2010 census, the city had a population of 152,374, up from 124,966 at the 2000 census. The cities of Norco and Riverside lie to the north and northeast, Chino Hills and Yorba Linda to the northwest, and the Cleveland National Forest and the Santa Ana Mountains to the southwest, and unincorporated Riverside County along the rest of the border, respectively. Corona is approximately 48 miles (77 kilometers) southeast of Los Angeles and 95 miles (153 km) north-northwest of San Diego.
Corona, located along the western edge of Southern California's Inland Empire region, is known as the "Circle City" due to Grand Boulevard's 3 mi (4.8 km) circular layout. It is one of the most residential cities in the Inland Empire, but also has a large industrial portion on the northern half, being the headquarters of companies such as Fender Musical Instruments Corporation, Monster Beverage Corporation, and supercar manufacturer Saleen.
Directly north of the City of Corona borders the City of Norco, the City of Riverside is to the east, and Chino Hills is on its northwest border. This area (north of State Route 91) is primarily residential and commercial. The makeup is primarily middle and upper-middle income, with most housing being built after the late 1990s, and is known for being well maintained and safe. Prominent areas include Corona Hills and Corona Ranch - the two neighborhoods separated by Interstate 15.
- Neighborhoods of Northwest Corona: Auburndale, Auto Center, Corona Airport, Prado Wetlands (unincorporated Riverside Co.)
- Neighborhoods of Northeast Corona: Parkridge, Corona Hills, Corona Ranch
- Downtown/North Main: Most of the City's downtown area lies north of State Route 91, and is home to the former Fender Museum (now the new Corona Community Center). The area has office and apartment buildings. The new North Main renovation project added multiple new retail shops, bars, and restaurants to the area. Downtown is also the location of the North Main Corona Metrolink station, which is one of two Metrolink stations in the city. The Downtown/North Main area straddles the Northwest neighborhood of Auburndale and the Northeast neighborhood of Parkridge along North Main Street.
- Prado Wetlands: The constructed Prado Wetlands are approximately 465 acres and are comprised of 50 shallow ponds used as a natural water treatment system. They were created in 1996, a modification of ponds used for duck hunting, and before the 1970s, barley fields. The Prado Constructed Wetlands near Prado Dam are the largest constructed wetlands on the west coast, and were built to enhance water quality by removing nitrate and other pollutants in the Santa Ana River water that flows to Orange County. These programs additionally allow OCWD and the U.S. Army Corps of Engineers to capture stormwater at Prado Dam for recharge in Orange County—providing a local water supply and saving millions of dollars each year. 
The central city area includes the inner circle of Grand Boulevard as well as all areas south of State Route 91 and north of Ontario Avenue. This is the oldest area of the city by far, with most housing having been built around 1910. This part of the city has a mixed Hispanic and white population, and consists of many restored historic residences.
S Main Street serves as the border between Central Corona's Westside & Eastside neighborhoods. South Main Street Palms Historic District extends from Olive St to Chase Dr.
- Center City: Grand Boulevard Historic District
- Neighborhoods of Westside Corona: Alta Vista, Civic Center, Coronita (unincorporated Riverside Co.), Sierra Del Oro
- Neighborhoods of Eastside Corona: Bel Air, Circle City, Home Gardens (unincorporated Riverside Co.), Kellogg, Pepper Corner, Sunnyslope
- Sierra Del Oro: Sierra Del Oro is the western portion of Corona, comprising the communities situated along Green River Road, extending all the way towards State Route 91 and the Orange/Riverside county line, bordering Yorba Linda and Anaheim Hills, Anaheim. This area holds many apartment complexes geared towards commuters, along with the West Corona Metrolink station. The Corona Auto Center is located at the base of the foothills. In December 2016, construction of the Foothill Parkway expansion was completed, allowing a direct street link between Sierra Del Oro and South Corona.
- Coronita: Coronita is an unincorporated, census-designated area in Riverside County enclosed in western Corona. An annexation attempt in 1986 by the city failed.
- Home Gardens:Home Gardens is a census-designated place (CDP) within the City of Corona's sphere of influence. The neighborhood is largely populated by Hispanic and Caucasian communities. Home Gardens is one of Corona's largest neighborhoods with a population estimate of approximately 12,000 residents. It is also one of the city's lowest-income areas. The neighborhood is served by Magnolia Avenue, a major thoroughfare which leads into the City of Riverside. Bus service is provided by the Riverside Transit Agency (RTA) and Corona Cruiser.
South Corona is home to the newest planned communities of Corona and is located south of Ontario Avenue. Most of the housing was built after the early 2000s. This area has the highest rated schools in the city (as well as some of the highest in the region).
- Neighborhoods of Southwest Corona: Buena Vista, Mountain Gate, Skyline
- Neighborhoods of Southeast Corona: Arcilla (unincorporated Riverside Co.), Bedford, Citrus Hills, Eagle Glen, El Cerrito (unincorporated Riverside Co.), Mathews (unincorporated Riverside Co.), North Temescal Valley (unincorporated Riverside Co.), Santana Heights, South Temescal Valley (unincorporated Riverside Co.), Weisel
- Dos Lagos: Dos Lagos is located in Weisel near the southern city limits of Corona, straddling Interstate 15. The area is mostly dominated by upscale apartment complexes, newer homes, a shopping center, and a large golf course.
- Temescal Valley: Temescal Valley is an unincorporated but census-designated area in Riverside County at the southernmost end of Corona city limits, and is included in the city's sphere of influence. It includes the neighborhoods of Sycamore Creek, Trilogy, The Retreat and Horsethief Canyon Ranch. In 2013, the City of Corona applied for annexation of the area through the Riverside County Local Agency Formation Commission (LAFCO). On September 26, 2013, however, the Commission formally denied the City of Corona's request for annexation. The contract between Corona and the County to provide its emergency services to the northern-third of Temescal Valley persists.
Although the arguments of the opponents of annexation included the fear of being "Coronians" and losing the area's identity, Temescal Valley's ZIP Code remains associated with Corona.
- El Cerrito:El Cerrito is located on the southeastern part of the city, just a few exits north of the Dos Lagos neighborhood on I-15. El Cerrito is mostly a rural/suburban area with many dirt roads in alleyways and no ranches. El Cerrito is home to El Cerrito Sports Park, a large park consisting of one baseball field and a popular destination for Little League Baseball and local school softball teams. El Cerrito is served by Ontario Avenue/Temescal Canyon Road.