Esurance Holdings, Inc. (Esurance) is a U.S. holding company for a group of personal auto insurance companies that market, underwrite, and distribute personal auto insurance products directly to customers through Esurance's award-winning website.

Esurance also writes auto insurance through select online agents, and provides other insurance products through partnerships with industry leading online providers, including Answer Financial Inc.

Wiki Says

Esurance was founded in 1998 as SiliconSierra Holdings Inc. The company launched its website in December 1999.

In 2000, Esurance was acquired by Folksamerica Holding Company, Inc. (a subsidiary of White Mountains Insurance Group). Esurance is now a direct subsidiary of White Mountains.

In 2008, Esurance policies in force decreased by 5 percent.  As of 2009, Esurance offers auto Insurance in 30 states.

Esurance Car Insurance Says

While the phrase "less is more" may be true when you’re decorating or accessorizing, when it comes to auto insurance, more is less: The more coverage you have, the less it will cost you if you get in an accident.  Esurance offers a variety of auto insurance types and coverage options in addition to discounts available to eligible customers. 

Contact Esurance at:

Esurance
650 Davis Street
San Francisco, CA 94111
Telephone: (800) 378-7262

Sources: Wikipedia.com, "Esurance", 2009; Esurance web site, "FAQ: Before You Buy," 2009.