As of 2015, all 50 U.S. states and the District of Columbia legally recognize and document same-sex relationships in some fashion, be it by same-sex marriage, civil union or domestic partnerships. Many counties and municipalities outside of these states also provide domestic partnership registries or civil unions which are not officially recognized by the laws of their states, are only valid and applicable within those counties, and are usually largely unaffected by state law regarding relationship recognition (except in some aspects). In addition, many cities and counties continue to provide their own domestic partnership registries while their states also provide larger registries (for all relationship recognitions); a couple can only maintain registration on one registry, requiring the couple to de-register from the state registry before registering with the county registry.

These are the cities and counties of United States which offer a domestic partnership and/or civil union classified by census region.

West Region

Pacific Division

Hawaii Same-sex marriages, civil unions, domestic partnerships (limited to state employees only) and reciprocal beneficiary relationships are all granted throughout the state to same-sex couples.

Alaska Same-sex marriages and domestic partnerships (limited to state employees only) are both granted throughout the state to same-sex couples.

City and Borough of Juneau

Washington State Same-sex marriages are granted throughout the state to same-sex couples and all previous domestic partnerships (with the exception of couples with at least one member aged 62 or above) have automatically been converted into civil marriage.

City of Anacortes City of Bellevue City of Bellingham City of Burien City of Des Moines City of Edmonds King County City of Lacey: Residents of the city. Both opposite- and same-sex couples. City of Newcastle City of Olympia: No residency requirement. Both opposite- and same-sex couples. Notarized applications are accepted by mail when accompanied by appropriate payment. Pierce County City of Seattle: No residency requirement. Both opposite- and same-sex couples. Notarized applications are accepted by mail when accompanied by appropriate payment. Snohomish County City of Spokane City of Tacoma City of Tumwater: Residents of the city. Both opposite- and same-sex couples. City of Vancouver

Oregon Same-sex marriages and domestic partnerships are both granted throughout the state to same-sex couples.

City of Ashland: No residency requirement. Limited to same-sex couples. City of Corvallis City of Eugene: No residency requirement. Both opposite-sex and same-sex couples. City of Gresham: Limited to same-sex couples. Multnomah County: No residency requirement. Both partners must be present. Both opposite-sex and same-sex couples. City of Portland

California Same-sex marriage and domestic partnerships are both granted throughout the state to same-sex couples.

Alameda County City of Berkeley: No residency requirement. Both opposite- and same-sex couples. City of Beverly Hills: No residency requirement. Both opposite- and same-sex couples. City of Cathedral City: Residents of the city. Both opposite- and same-sex couples. City of Claremont City of Davis: Residents of the city. Both opposite- and same-sex couples. City of Fremont City of Healdsburg City of Laguna Beach: No residency requirement. Both opposite- and same-sex couples. City of Long Beach: No residency requirement. Both opposite- and same-sex couples. Benefits include visitation rights in hospitals and correctional facilities equal to those given to a spouse. Los Angeles County : Residents of the county or at least one partner employed by the county. Both opposite- and same-sex couples. Marin County: Residents of the county or at least one partner employed in the county. Limited to same-sex couples. City of Modesto City of Oakland: Residents of the city or at least one partner employed by the city. Both opposite- and same-sex couples. City of Palm Springs: Residents of the city. Both opposite- and same-sex couples. City of Palo Alto: No residency requirement. Both opposite- and same-sex couples. City of Petaluma: Residents of the city or at least one partner employed in the city. Both opposite- and same-sex couples. City of Sacramento: Residents of the city. Both opposite- and same-sex couples. City of San Bruno City of San Diego City and County of San Francisco: Both partners residents of The City or at least one partner employed by City government. Both opposite- and same-sex couples. City of Santa Barbara: No residency requirement. Both opposite- and same-sex couples. Santa Barbara County : Residents of the county or at least one partner employed in the county. Both opposite- and same-sex couples. City of San Jose City of San Luis Obispo San Mateo County City of Santa Monica: No residency requirement. Both opposite- and same-sex couples. City of Santa Barbara City of Santa Cruz Santa Cruz County City of Santa Rosa City of Sebastopol Sonoma County Ventura County : Residents of the county or at least one partner employed by the county. Both opposite- and same-sex couples. City of West Hollywood: No residency requirement. Both opposite- and same-sex couples. Notarized applications are accepted by mail when accompanied by appropriate payment.

Mountain Division

Idaho Same-sex marriages are granted throughout the state to same-sex couples.

Montana Same-sex marriages and domestic partnerships (limited to state employees only) are both granted throughout the state to same-sex couples.

City of Missoula: Residents of the city. Both opposite- and same-sex couples. Missoula County

Wyoming Same-sex marriage are granted throughout the state to same-sex couples.

Nevada Same-sex marriages and domestic partnerships are both granted throughout the state to same-sex couples.

Utah Same-sex marriages are granted throughout the state to same-sex couples.

City of Salt Lake : The Mutual Commitment Registry is open to city residents. Salt Lake County : The Mutual Commitment Registry is open to city residents.

Colorado Same-sex marriages, civil unions and designated beneficiary agreements are all granted throughout the state to same-sex couples.

City of Aspen City of Boulder: No residency requirement. Both opposite- and same-sex couples. City of Denver: No residency requirement. Both opposite- and same-sex couples. Eagle County City of Glendale

Arizona Same-sex marriages and domestic partnerships (limited to state employees only) are both granted throughout the state to same-sex couples.

City of Bisbee Town of Clarkdale City of Cottonwood City of Flagstaff : Must be resident of Flagstaff Town of Jerome City of Phoenix: Must be resident of Phoenix. Both opposite- and same-sex couples. Pima County City of Scottsdale City of Sedona City of Tempe : Both opposite- and same-sex couples. City of Tucson : No residency requirement. Both opposite- and same-sex couples.

New Mexico Same-sex marriages and domestic partnerships (limited to state employees only) are both granted throughout the state to same-sex couples.

City of Albuquerque: Both opposite- and same-sex couples. City of Santa Fe: Both opposite- and same-sex couples.

Midwest Region

West North Central Division

North Dakota Same-sex marriages are granted throughout the state to same-sex couples.

South Dakota Same-sex marriages are granted throughout the state to same-sex couples.

Minnesota Same-sex marriages are granted throughout the state to same-sex couples.

City of Crystal: At least one partner must reside or work in the city. Both opposite- and same-sex couples. City of Duluth: No residency requirement. Both opposite- and same-sex couples. City of Eagan: Residents of the city. Both opposite- and same-sex couples. City of Eden Prairie: Must work or live in Eden Prairie, Minn. Both opposite- and same-sex couples. City of Edina: Must work or live in Edina, Minn. Both opposite- and same-sex couples. City of Falcon Heights: At least one partner must reside or work in the city. Both opposite- and same-sex couples. City of Golden Valley: Residents of the city. Both opposite- and same-sex couples. City of Maplewood City of Minneapolis: No residency requirement. Both opposite- and same-sex couples. City of Northfield City of Red Wing: At least one partner must reside or work in the city. Both opposite- and same-sex couples. City of Richfield: At least one partner must live or work in Richfield. Both opposite- and same-sex couples. City of Robbinsdale: Residents of the city. Both opposite- and same-sex couples. City of Rochester: No residency requirement. Both opposite- and same-sex couples. City of Saint Paul: No residency requirement. Both opposite- and same-sex couples. City of Shorewood City of St. Louis Park: At least one partner must reside or work in the city. Both opposite- and same-sex couples.

Nebraska Same-sex marriages are granted throughout the state to same-sex couples.

Iowa Same-sex marriages and domestic partnerships (limited to state employees only) are both granted throughout the entire state to same-sex couples.

Floyd County: Employees of the county. Both opposite- and same-sex couples. City of Iowa City: No residency requirement. Both opposite- and same-sex couples.

Kansas Same-sex marriages are granted throughout the entire state to same-sex couples.

City of Lawrence: Both individuals must be residents of the City of Lawrence, Kansas. Both opposite- and same-sex couples. City of Topeka: Both be residents of the city of Topeka. Share a common permanent residence. Agree to be in a relationship of mutual interdependence. Each be at least 18 years old and mentally competent to enter into a contract. Not be related by blood as defined by Kansas law. Agree to file a Declaration of Domestic Partnership with the city of Topeka.

Missouri Same-sex marriages are granted throughout the entire state to same-sex couples.

City of Clayton: Residents of the city. Both opposite- and same-sex couples. City of Columbia: No residency requirement. Both opposite- and same-sex couples. Jackson County: Residents of the city. Both opposite- and same-sex couples. City of Kansas City: Residents of the city. Both opposite- and same-sex couples. City of Olivette: No residency requirement. Both opposite- and same-sex couples. City of St. Louis: Residents of the city. Both opposite- and same-sex couples. University City: Residents of the city. Both opposite- and same-sex couples.

East North Central Division

Wisconsin Same-sex marriages are granted throughout the entire state to same-sex couples.

City of Appleton Dane County: Residents of the county. Both opposite- and same-sex couples. City of Eau Claire: City employees only. Both opposite- and same-sex couples. City of Janesville Kenosha County : Residents of the county. Both opposite- and same-sex couples. City of Madison: Residents of the city. Both opposite- and same-sex couples. City of Manitowoc City of Milwaukee: Residents in Milwaukee County. Limited to same-sex couples. Milwaukee County City of Racine: City employees only. Only applies to state-registered domestic partners, which are defined by state law as same-sex couples. Rock County : Residents of the county. Both opposite- and same-sex couples. Village of Shorewood Hills

Michigan Same-sex marriages are granted throughout the entire state to same-sex couples.

City of Ann Arbor: No residency requirement. Both opposite- and same-sex couples. Notarized applications are accepted by mail when accompanied by appropriate payment. City of Detroit: No residency requirement. Both opposite- and same-sex couples. City of East Lansing Ingham County City of Kalamazoo: Both opposite- and same-sex couples.