In all the world, Jenco (Jenco 
, 詹科 
) is a very rare masculine first name. Much more frequently, Jenco is the last name as well as the forename.
Mr, Mario, Marek, Saige, Susan, Steve, Scott, Alesa, Alice, Aruna, Maria, April, Carla, Carol, Cathy, Becky, Brian, Karen, Kathy, Kelly, Kevin, Chris, Erin, Jeff, Jodi, Sal, Rob, Jan, Jay, Joe, Jen, Jim, Mary, Mark, Mick, Mike, Paul, Ruby, Dean, Dora, Doug, Gary, Lisa, Lori, Lois, John, Patty, and Randy