It has triggered a campaign to save the facility, which supporters have called a lifeline for the community.
Canada Post said all its retail operations and business decisions go through an extensive review process to evaluate customer needs.
Wong said the post office is vital to the area, while a petition to save it from closure says it serves some of the city's most vulnerable and marginalized residents.
Wong said it was "definitely a shame" to hear of the planned closure, which would force cultural association operators and seniors in the neighbourhood to find another way to communicate.
"Especially in these days and age, the elders are getting older," said Wong. "If they start moving out, then it's just another inconvenience to everyone in the community."
Activist group Save Chinatown YVR launched the online petition, calling on Canada Post not to stamp out the Chinatown post office.
The petition says the post office serves low-income people, seniors, migrants and people with disabilities who rely on the mail for government documents and income assistance cheques.
