A recent court ruling upholding a ban on same-sex marriage in four states makes it likely that the issue will be headed to the Supreme Court.

Here is the current breakdown of which states permit same-sex marriage and which don’t.

States that permit same-sex marriage: 32

States where same-sex marriage was legalized by court decisions: 21

These states are: Alaska, Arizona, California, Colorado, Connecticut, Idaho, Indiana, Iowa, Massachusetts, Nevada, New Jersey, New Mexico, North Carolina, Oklahoma, Oregon, Pennsylvania, Utah, Virginia, West Virginia, Wisconsin and Wyoming.

Legalized by state legislatures: 8

These states are: Delaware, Hawaii, Illinois, Minnesota, New Hampshire, New York, Rhode Island and Vermont.

Legalized after vote by citizens: 3

These states are: Maine, Maryland and Washington.

Note: Washington D.C. also permits same-sex marriage.

States that prohibit same-sex marriage: 18

States banning same-sex marriage by constitutional amendment and by law: 17

These states are: Alabama, Arkansas, Florida, Georgia, Kansas, Kentucky, Louisiana, Michigan, Mississippi, Missouri, Montana, North Dakota, Ohio, South Carolina, South Dakota, Tennessee and Texas. 

States banning by constitutional amendment: 1

This state is Nebraska. 

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