The bandits invaded Kasuwan Daji village in Kabe district and set a market ablaze, before looting shops for food.
“Over 30 victims lost their lives during the attack, some persons were also kidnapped,” during the raid on Saturday, Wasiu Abiodun, Niger police spokesman said.
Kidnap gangs, referred to as bandits by locals, regularly carry out mass kidnappings for ransom and loot villages in the parts of northwest and northcentral Nigeria.
But Niger state has been one of the hardest hit in recent months.
In November, armed gangs seized more than 250 teachers and staff from a Catholic school in the state.
Authorities announced their release in two batches weeks later without saying if ransom was paid.
At least 26 people drowned and 14 others are missing after a boat carrying farmers and fishermen capsized in northeastern Nigeria, the emergency services said Sunday.