Council was set to vote May 2 on the plan, which was pushed by Councilman Chris Seelbach, the first openly gay person to serve on the group.
An analysis indicates it would cost the city of Cincinnati between $348,000 and $543,000 more each year to provide medical, dental and vision insurance benefits to the same-sex partners of city employees.
The figures were provided in an April 30 memo to council from City Manager Milton Dohoney Jr.
The range in costs depends on how many people apply to use the benefit should it become available, Dohoney wrote.
Dohoney estimates between 44 and 73 employees would choose this benefit if offered, some of whom have children.
The entire City Council has indicated it supports the plan except Charlie Winburn, the group’s sole Republican and an evangelical minister.
Columbus already offers insurance coverage to the same-sex partners of its municipal employees.