Those cases continue to go forward, though they could be delayed as Cosby may not be required to give depositions in several of them until after the retrial.
The revelations led newly elected Montgomery County District Attorney Kevin Steele to seek charges.
The jury in the Philando Castile case took 27 hours.
The trial centered around Andrea Constand, the former director of operations for Temple University's women's basketball team, who claimed she was drugged and sexually assaulted by Cosby in January 2004 at his home near Philadelphia. About 60 women have made similar allegations, although only Constand's is recent enough to sustain a criminal prosecution.
He did not take the stand in his own defence, leaving it to his attorney to argue Cosby and Ms Constand were lovers sharing a consensual sexual encounter.
Warriors say no decision has been made on White House visit
Several members of the Super Bowl-winning New England Patriots skipped their White House visit back in April. The Warriors won the title in 2015 before the Cavaliers made their historic comeback previous year.
The jury tells the judge that it "cannot come to a unanimous consensus on any of the counts".
Jurors also asked for, and received, a definition of reasonable doubt, the threshold that prosecutors must cross to win a conviction, and reviewed testimony from Constand and her mother about phone conversations they had with Cosby after the encounter.
Linda Kirkpatrick, another accuser, said that Cosby underestimated the dozens of women who have spoken out against him. As deliberations wore on, Cosby thanked his fans and supporters - first in a tweet, then in brief comments as he left the courthouse Friday night. Cosby was charged shortly before the statute of limitations was set to expire. Constand says the star drugged and molested her in 2004 at his home outside of Philadelphia.
Judge Steven O'Neill refused, saying there's no precedent to halt the jury's work. "If the case is retried, know that I will once again put them to the test".
After the questioning was done, Cosby sat back in his chair, holding a slender cane that has been with him inside the courtroom each day to his chest. And yet this case - the only one managed to be brought to a criminal court thus far - ended in a mistrial because the jury was unable to come to a conclusion about whether Cosby was innocent or guilty. Some of the other women have pursued civil cases or out-of-court settlements, but the vast majority can not pursue criminal charges because of a statute of limitations for sexual assault and rape cases. "Heinously and exploitively ambitious", she said in a written statement.
Kevin Durant, Stephen Curry lead Warriors to NBA title
He was labouring visibly coming back up the court allowing Curry a number of easy buckets as the game was winding down. NBA Finals MVP Kevin Durant rode on a different bus with his mom. "It nearly makes too much sense not to happen".
The statement came the day after NPR broadcast an awkward interview with Cosby - awkward because Cosby did not utter one word when repeatedly asked about the charges against him. We commend those prosecutors who raise awareness that one of the hallmarks of drug-related sexual assaults is the affect the drug has on the victim's memory and the ability to recall and were nonetheless willing to present this evidence to the jury.
Ms Cosby also attacked the judge, the accuser's lawyers and the media. He said prosecutors felt good about the case, but "there's always tweaks".
Constand, now 44, initially went to police about a year after she said Cosby assaulted her, but a prosecutor declared her case too weak to bring charges. It's no wonder, then, that so many sexual assault victims decide that the legal system won't help them in their long process of recovery. The jurors have been trying to break a deadlock.
Jurors got the case on Monday.
Lead surgeon: US congressman Scalise showing improvement after being shot
Aguilar plays outfield for the Democratic team; before the shooting , Scalise was slated to play second base for the Republicans. Scalise's security detail as the reason mass casualties were avoided, described the scene as "sort of a killing field".
- Indians Held By ISIS In Iraq's Mosul Are Alive: Government
- E3 2017: Why Metroid Prime 4 Was Announced Early In Development
- Injured Capitol Police officer throws out first pitch in emotion
- Cuba Blasts Trump's Policy Speech as 'Hostile Rhetoric' That 'Reverts' Progress
- Policeman injured in Srinagar militant attack dies
- Kamala Harris in 2020?
- Justin Thomas shoots 63 in US Open third round
- Former PM Major: May's DUP deal is risk to Northern Ireland peace
- Serbia´s first openly gay prime minister prepares to take office
- 'Rocky' director dead at 81