City Council Speaker Corey Johnson is demanding Mayor Bill de Blasio and Police Commissioner Dermot Shea get to the bottom of why stop-and-frisk incidents spiked 22% in 2019.

“I think that number is pretty alarming,” Johnson told reporters Tuesday. “It’s a very significant jump, and I want to know why that jump is so high.”

Johnson called on Shea to take a “data-driven approach” to understand why the city suffered its first increase in stop-and-frisk cases during the six-plus years of the de Blasio administration — and its highest tallies since 2015.

“He needs to get that information as to why that number went up,” the speaker said. “He needs to understand that. He needs to look precinct by precinct to understand why that’s happening.”

NYPD data released last week showed cops made 13,459 stops in 2019, up from 11,008 in 2018.

“I don’t know why it’s happening, but it’s concerning to me,” Johnson said. “We saw how the policy was abused during the [Bloomberg] administration’s years and what a horrible, painful impact it had a New York City. They were going to have to explain what a number went up.

“The only time someone should be stopping someone is if there is reasonable suspicion that the person had done something — not because of the color of their skin, not because of the way they dressed.”

The NYPD attributed the increase to cops properly reporting stops due to improved training in the “very complex area of law.”

“It’s unlikely to be a true increase in stops but rather more accurate and complete reporting,” the agency said.

The yearly numbers are still well below the nearly 700,000 stopped at the height of the stop-and-frisk program in 2011 under former Mayor Mike Bloomberg.

A Manhattan federal court judge ruled in 2013 that the department’s deployment of stop-and-frisk was unconstitutional and installed a federal monitor.

Bloomberg apologized for backing the policing tactic last November, shortly before jumping into the 2020 presidential race. But audio surfaced Tuesday of a 2015 speech in which Bloomberg appeared to say that the perpetrators of “95%” of crimes “are male, minorities, 16 to 25. That’s true in New York, that’s true in virtually every city.”