The former AC Milan and Paris Saint-Germain football star won just 10.7 percent of the vote in Bong County when he stood for president in 2005, but in the first round of voting in 2017, his share of the vote shot up to 40.6 percent.
In results announced on Thursday by the chairperson of the country's electoral Commission, Jerome Kokoya, Mr. Weah scored 720,023 votes which is 61.5 percent of the total votes so far collated and counted.
Weah ran against Vice President Joseph Boakai to replace President Ellen Johnson Sirleaf, who is stepping down after two terms, the maximum allowed under Liberia's constitution.
Supporters of George Weah, former soccer player and presidential candidate of Coalition for Democratic Change (CDC), celebrate after the announcement of the presidential election results in Monrovia, Liberia December 28, 2017.
Weah went on to play for a string of other clubs across Europe, including Chelsea, Manchester City and Marseille.
The ex-Liberian worldwide played for Paris Saint-Germain, AC Milan, Chelsea and Manchester City and later returned to France with Marseille.
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Current Arsenal manager Arsene Wenger signed him for Monaco in 1988, and in a recent interview Weah said he would not have enjoyed such success were it not for the Frenchman.
He is the only ever African player to win both the Ballon d'Or and the Fifa World Player of the Year award.
United Nations Secretary-General Antonio Guterres has sent former Nigerian President Olusegun Obasanjo to Liberia to help in that country's peaceful transition of power.
Liberia is Africa's oldest modern republic.
The US-based Carter Center said there were "notable improvements" in the handling of Tuesday's vote from the first round in October, echoing positive assessments from other worldwide observers.