Association
Last Updated: April 8, 2026
Association-owned multiple listing services are typically owned and governed by a member-owned nonprofit Realtor association. Governance, access and policies are set by association members in an effort to advance the interests of Realtor professionals and their brokerages.
The MLSs below are listed in alphabetical order by default.
2026 Tier | Organization Name and Details | Region | Organization Type |
|---|---|---|---|
Micro |  Aberdeen Area Association of RealtorsAberdeen, SD | West North Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Small |  Adirondack Champlain Valley MLSPlattsburgh, NY | Middle Atlantic | MLS |
MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 12026 Tier: Small | |||
Small |  Aiken Association of RealtorsAiken, SC | South Atlantic | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Small | |||
Small |  Allegheny Highland Association of RealtorsAltoona, PA | Middle Atlantic | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Small | |||
Micro |  Allegheny Valley Board of RealtorsLemoyne, PA | Middle Atlantic | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Micro |  Altamaha Basin Board of RealtorsVidalia, GA | South Atlantic | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Small |  Altitude MLSDillon, CO | Mountain | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Small | |||
Medium |  Amarillo Association of RealtorsAmarillo, TX | West South Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Medium | |||
Small |  Amelia Island-Nassau County Association of RealtorsFernandina Beach, FL | South Atlantic | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Small | |||
Micro |  Americus Board of RealtorsAmericus, GA | South Atlantic | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Large |  APEX MLSLouisville, KY | East South Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Large | |||
Mega+ |  Arizona Regional MLSTempe, AZ | Mountain | MLS |
MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 42026 Tier: Mega+ | |||
Large |  ArkansasONE MLS (Northwest Arkansas Regional MLS)Rogers, AR | West South Central | MLS |
MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 12026 Tier: Large | |||
Micro |  Arkansas Valley Board of RealtorsRussellville, AR | West South Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Micro |  Ashland Area Board of RealtorsAshland, KY | East South Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Micro |  Ashland Board of RealtorsAshland, OH | East North Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Medium |  Aspen Glenwood MLSBasalt, CO | Mountain | Association/MLS |
MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 22026 Tier: Medium | |||
Micro |  Athens County Board of RealtorsAthens, OH | East North Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Micro |  Badlands Board of RealtorsDickinson, ND | West North Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Micro | |||
Small |  Bagnell Dam Association of RealtorsOsage Beach, MO | West North Central | Association/MLS |
MLS Type: Local MLSOwnership Type: Association2026 Tier: Small | |||