In terms of public information, it doesn't come much better anywhere else than in the US. Public Records is one example to that claim. There are various public record categories at the disposal of anyone who seeks them and this is actually required by law (Freedom of Information Act 1966). One of the most widely searched categories is State Divorce Records.
Public records fall under the jurisdiction of the State and there are variations in terms of regulations and practices from state to state. However, State Divorce Records are a standard core vital record along with Birth, Death and Marriage in practically all the states, among them, California. If there's been a divorce, all the information would go into the central database of the state. This is not optional. Personal particulars of both the divorcing parties and those of their children if any, other details such as time and place of divorce, filing number, alimony, child custody and visitation arrangement, final decree, certificate and so forth are standard information in California Divorce Records .
County courthouses in this "Golden State" where divorce proceedings are conducted will generate their respective reports and upload them to the state repository at the Office of Vital Records within the California Department of Public Health in Sacramento along with other public data. California is an 'open records' state where Public Divorce Records are concerned. Unless classified as confidential or sealed by the courts, any member of the public has the right to request this information in regard to anyone as long as it's done through the proper channels. The respective county courthouses across California also maintain their own set of Divorce files.
As the state with the largest population, it's not unreasonable to speculate that California courts issue the highest number of divorce certificates annually nationwide although for some reason, it's documented that the state of California does not keep track of the number of divorce filings at the various county courts. People conduct California Divorce Records Lookup for a multitude of purposes. Top on the list is verifying that previous marriages have been formally annulled when divorcees apply for license to re-marry. Other common uses are checking background, establishing biological relationship and researching genealogy.
With the advent of the Internet, California Divorce Records has become readily available all the more. This information is commonly purchased online these days as there are now plenty of commercial record providers retailing on the internet with highly professional service. Fees are involved but they are usually very reasonable, given the immense competition in the industry. On top of government data and information, they often bring extras from their private networks.