Civil Unions Recognized by State

Federal & State Law Editorial TeamLast reviewed: April 2026

Whether the state ever authorized civil unions or domestic partnerships, the year of recognition, and the conversion path to marriage post-Obergefell (2015).

50 States2 data columnsLast updated: January 2026

Click any column header to sort ascending or descending. Click again to reverse, and a third time to reset.

Status	Year	Conversion to Marriage
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
Domestic partnership	1999	Optional, both still exist
Yes (still issued)	2013	Optional
Converted	2005	Auto-converted to marriage 2010
Converted	2012	Auto-converted to marriage 2014
No	N/A	N/A
No	N/A	N/A
Yes (still issued)	2012	Optional
No	N/A	N/A
Yes (still issued)	2011	Optional
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No (marriage only)	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
Domestic partnership	2009	Optional
Converted	2008	Auto-converted to marriage 2011
Yes (still on books)	2007	Optional (marriage since 2013)
No	N/A	N/A
No (marriage only)	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
Domestic partnership	2008	Optional
No	N/A	N/A
Converted	2011	Discontinued 2013 (marriage)
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
No	N/A	N/A
Converted	2000 (first US)	Auto-converted to marriage 2009
No	N/A	N/A
Domestic partnership (62+)	2007	Auto for under 62; optional 62+
No	N/A	N/A
Domestic partnership (repealed)	2009-2018	Phased out 2018
No	N/A	N/A
Domestic partnership	1992	Optional

After Obergefell v. Hodges (2015) recognized same-sex marriage nationwide, most states converted civil unions to marriages or stopped issuing them. Existing civil unions remain valid but may have different federal tax/benefits treatment than marriage.

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.