The police chief for the northwest region, Jackson Hilaire, said at least seven people were killed and more than 100 injured in Port-de-Paix.
According to a statement from the country's Civil Protection agency, several people were injured in Port-de-Paix, Gros-Morne, Chansolme and Tortuga island, where houses were destroyed or damaged. Port-de-Paix is the capital of the department.
A 5.9-magnitude natural disaster struck northwest Haiti Saturday, killing at least 11 people and injuring more than 130.
The tremor rattled the capital Port-de-Prince, sparking emotion among residents still reeling from the massive 2010 quake that left at least 200,000 people dead and 300,000 more wounded. Emergency teams worked to provide relief in Haiti on Sunday after the quake killed at least 11 people and left dozens injured.More news: Braves, Dodgers tweak starting lineups for Game 2 of NLDS
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President Jovenel Moise urged people to remain calm and said on Twitter he had ordered "all of the republic's resources" to be directed toward assisting recovery efforts.
A magnitude 5.2 aftershock struck Haiti on Sunday, even as survivors of the previous day's temblor were sifting through the rubble of their cinderblock homes. There were no immediate reports of further damage from the aftershock.
"Our teams from north to south are witnessing a state of panic in some cities", the Civil Protection agency reportedly said, noting that there have been reports of injuries.
Many people in the Caribbean country fear a repeat of a massive 2010 quake that struck near the capital and left at least 200,000 people dead and 300,000 more injured.
In Gros-Morne, some people walked along the street while looking up at the cracked exterior walls of homes. Tens of thousands of people are still displaced because of the natural disaster. Some houses were destroyed, it said. Parliamentarian Alcide Audne told The Associated Press that two of the deaths occurred in the auditorium.