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Poor Albert Einstein gets attributed many quotes he never uttered. I have a feeling this is one of them, because I couldn't find a proper citation.
Intelligence is not the ability to store information, but to know where to find it.
Did Einstein ever say that?
See e.g. this IPS SE answer and Google.
Quote Investigator did an article on a similar quote and I think the answer applies here too.
It could be a quote that's a vague memory of someone else's vague memory of something Einstein actually said. In Philipp Frank's biography of him, “Einstein: His Life and Times” (1947), there is the following quote:
While Einstein was in Boston, staying at the Hotel Copley Plaza, he was given a copy of Edison’s questionnaire to see whether he could answer the questions. As soon as he read the question: “What is the speed of sound?” he said: “I don’t know. I don’t burden my memory with such facts that I can easily find in any textbook.”
Nor did he agree with Edison’s opinion on the uselessness of college education. He remarked: “It is not so very important for a person to learn facts. For that he does not really need a college. He can learn them from books. The value of an education in a liberal arts college is not the learning of many facts but the training of the mind to think something that cannot be learned from textbooks.”
The event mentioned happened in 1921 and around that time the New York Times reported that he said a paraphrased version of the first quote.
However, it's also possible the quote is based off something someone else said. A 1914 book by someone who isn't Einstein had the following:
Educated people are not those who know everything, but rather those who know where to find, at a moment’s notice, the information they desire.
There's also another quote from 1917 from a different source, also by someone who is not Einstein:
Someone has said that the cleverest people are not those who know everything, but those who know where to look for and find any information that is at the moment required. Which is only another way of saying that they have methodical minds and habits and know how and where to store their knowledge.
I know this is an old question but I think I have a relevant answer. Tagging on to what Laurel's answer details about similar wording from other sources; it is inscribed on Dodd Hall at FSU which was built in 1923: "The half of knowledge is to know where to find knowledge." After looking around for a bit I found this PDF which says that this is actually an English translation from an Italian book written in 1885 referencing a Latin saying, "Dimidium scientiae cui scit ubi sit scientia" (text on google books).
As to Einstein saying such a phrase? Who knows, and as the other answers point out no one seems to. This Latin phrase does, however, seem to be the oldest reference of such comparisons of knowledge and where to find knowledge, though.
