The United Nations High Commissioner for Refugees interviewed, in January 2019, 409 persons on the Mexico-Guatemala border, next to the international bridge, in Chiapas. 75% were from Honduras; 13% from Guatemala; 9% from El Salvador and 3% from Nicaragua. A third had arrived at the border in large caravans.

63% said they left their country due to being a victim of violence, or out of fear of violence. 70% said that to return to their country would expose them to risks, including risk of death.

Only 7% said that they had sought asylum in Mexico. Among the reasons for not seeking asylum in Mexico were misleading information or lack of knowledge; that the process was long; and that they were seeking to enter the U.S.
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The interviews revealed that 46% preferred to resettle in Mexico, while 30% wanted to go elsewhere, principally the U.S.

The majority of persons interviewed were member of a family group. A third were women and 31% were children. 9% of children were traveling without a parent or legal guardian.

From here.