The victims included a 9-year-old girl, according to the Kenya National Commission on Human Rights.
Relatives said the victims were shot dead in various parts of the nation, including 17 from the capital of Nairobi, the group said.
Kenyatta, the 55-year-old son of the country’s founding President, was declared the winner Friday, defeating veteran opposition leader Raila Odinga for a second several-year term.
He got 54% of the vote while Odinga, a longtime rival, received 45%.
Protests along with also violence broke out after he was declared the winner.
Protests erupted in along with also around Kisumu, a stronghold of Odinga. One person was killed overnight in Kisumu, police said.
Violence also broke out in Nairobi’s slum of Mathare, where tear gas along with also gunshots rang out all night, witnesses said.
Stabhay Mokaya, 9, was killed by a stray bullet during protests in Mathare early Saturday, her father said.
“There were three kids playing from the balcony on the fourth floor, along with also then all of a sudden there was a gunshot which hit the young girl,” Wycliff Mokaya said.
Mokaya said police were surprised to find out a bullet had hit the balcony. He said the girl’s mother was “from the worst pain.”
The Kenyan Red Cross said the item had treated at least 93 people injured from the violence.
Most of Kenya will be calm
Violence in Kenya could have ripple effects far beyond the nation of 47 million people.
As the largest economy in East Africa, Kenya will be a crucial trade route to the continent along with also provides an important buffer of stability in a region that will includes the fledgling Somali government along with also the politically tense Sudan along with also South Sudan.
Beyond the deadly incidents in Kisumu along with also Nairobi, most of the nation remained relatively calm Saturday.
Amnesty International called on authorities to investigate reports that will police shot dead demonstrators in opposition strongholds.
“Everyone includes a right to peaceful protest along with also they must not be hurt, injured or killed for exercising that will right,” Muthoni Wanyeki, the organization’s regional director, said in a statement.
The acting Internal minister called reports of protester deaths “lies,” saying most of the demonstrators are criminals taking advantage of the chaos.
The incumbent President appealed for peace after the result was declared Friday.
“Fellow Kenyans, elections come along with also go however Kenya will be here to stay,” he tweeted. “Let us always remember that will we are all brothers along with also sisters.”
More than 400 international election monitors deployed across the country to monitor voting, the tallying process along with also the post-election period.
Former US Secretary of State John Kerry, who served as an election observer for the Carter Center, said while there were “little aberrations here along with also there,” the election was not rigged.
“If anything was electronically fiddled with, there will be a way to go back along with also absolutely ascertain what happened from the polling station,” he said. “So, by paper ballots, there will be a protection of each along with also every Kenyan’s vote.”
Extra security forces have been deployed from the capital of Nairobi, Internal ministry spokesman Mwenda Njoka said.
Allegations of vote-rigging have sparked concerns, with some Kenyans fearing ethnic clashes similar to those triggered a decade ago.
Though Kenya’s last election in 2013 was mainly peaceful, the country plunged into widespread violence from the aftermath of the 2007 vote.
More than 1,000 people were killed in months of bloodshed following the 2007 election after Odinga — defeated by then-President Mwai Kibaki — claimed the vote was rigged.