San Diego County
Besides San Diego, there are many smaller cities in the county. Listed here are the major ones:
San Diego County covers a very large area (4,526 square miles, to be exact) with incredibly varied topography. The western half of the county is mostly urbanized, and includes the city of San Diego and its many suburbs to the south, east, and north. The climate of the western half is more moderate, due to its proximity to the ocean, giving San Diego its signature weather. The eastern half is mostly uninhabited or rural, contains snow-capped mountains, forests, and barren desert, and is prone to more extreme weather.
Like much of California, English and Spanish are the dominant languages in San Diego County. Typically, most businesses have at least a few employees that are bilingual in English and Spanish, and some people will be bilingual in English and Tagalog (mostly spoken by San Diego's large Filipino population). It is also common to see store signs printed in both English and Spanish, especially in neighborhoods with large Hispanic populations.
For detailed information on getting in to San Diego, see the Get in section of San Diego.
There are two commercial airports in San Diego County: San Diego International Airport (IATA: SAN) is by far the major one, served by many airlines offering flights from cities around the country and some international flights to Mexico and Canada. McClellan-Palomar Airport (IATA: CLD) in Carlsbad serves a couple of commuter airlines providing service from Los Angeles and Phoenix.
Amtrak's frequent Pacific Surfliner  San Luis Obisbo-Los Angeles-San Diego route serves San Diego County with four stops: one in Oceanside, one in Solana Beach, one at the southern end of the line at Union Station in Downtown San Diego, and a secondary station in Old Town San Diego which is served on weekends.
Three major interstate roadways, I-5, I-8, and I-15, lead into San Diego County. I-5 runs from the north along the coast, I-8 comes in from the east through the desert, and I-15 leads in to San Diego from the northeast.
By limousine or limo bus
There are numerous companies throughout San Diego who provide luxury transportation and/or car service. Vehicles range in size from 4-door sedans to 50 passenger luxury limo buses. Limousine Rental is also common for brewery tours, wine tasting tours, and corporate events.
In the western half of the region, a complex system of interstate highways and major roads connect the cities and neighborhoods of that half of the region. In the more rural Inland region, only I-8 and a small network of state and county roads run across the area.
The Coaster  commuter rail system runs along the coast of San Diego County north of downtown San Diego, linking together most of the coastal cities and towns of northern San Diego County with Old Town and downtown San Diego. Amtrak's Pacific Surfliner runs this same route, stopping in Oceanside, Solana Beach, and San Diego, but is less practical for getting around the county than the Coaster due to its high price.
In North County, the Sprinter  rail line runs east-west between Oceanside and Escondido.
In San Diego, the San Diego Trolley  light rail system links several cities east and south of San Diego to the metropolitan center, running east through La Mesa and El Cajon to Santee and south through Chula Vista to the USA-Mexico border.
The Metropolitan Transit System (MTS) and the North County Transit District (NCTD) operate public transit bus services in San Diego County. MTS serves San Diego and many of the surrounding cities, while NCTD serves North County. Service in the Inland region is pretty scarce.
Listed here are just the major sights to experience in the region. For more details, see specific city articles.
Law enforcement is provided by the San Diego Sheriff Department.
San Diego county is one of the most safe regions and crime rate is low. Law enforcement officials still advise you that low crime isn't no crime. Pickpockets and thieves are still common in many cities.
Due to the proximity of this county being close to the US-Mexican border, safety should be within your knowledge. All residents in this area should be aware of the rules and use common sense
Due to California's proximity to the International Boundary with Mexico, visitors should be cautious while in areas near the border.
Know where you are at all times, follow good safety procedures and use common sense when making decisions. Do not pick-up hitch hikers. Keep valuables, including spare change, out of sight and lock your vehicle. Avoid traveling in well-marked but unofficial "trails." Avoid hiking or camping in areas of major border activity. If you are visiting a national or state park, consult park staff to help plan backcountry travel in safer areas. Report all suspicious person and behaviors to U.S Border patrol,California Highway Patrol or other law enforcement agency.