A Bronx station house was in mourning yesterday for a popular officer who died of an apparent heart attack while on duty.

Raymond Rodriguez, 42, collapsed at the 46th Precinct station house at 4 p.m. The 11-year vet was pronounced dead at St. Barnabas Hospital.

“Ray was a true Bronx cop,” said Joseph Anthony, a Patrolmen’s Benevolent Association board member. “He . . . protected the same neighborhoods where he grew up.”

He is survived by his wife, Melissa, three sons and a daughter.