Mega Tier MLS Organizations | Real Estate Almanac

Mega

Last Updated: April 8, 2026

Multiple listing services reporting between 10,000 and 19,999 subscribers fall in the Mega tier. There were 20 Mega MLSs operating across the US as of Dec. 31, 2025.

MLSs are listed in alphabetical order by default.

2026 Tier	Organization Name and Details	Region	Organization Type
Mega	doorify MLSCary, NC	South Atlantic	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 32026 Tier: Mega
Mega	Heartland MLSLeawood, KS	West North Central	Association/MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 12026 Tier: Mega
Mega	Hive MLSWilmington, NC	South Atlantic	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 202026 Tier: Mega
Mega	Las Vegas Realtors MLSLas Vegas, NV	Mountain	Association/MLS
Mega	MLS Type: Local MLSOwnership Type: Association2026 Tier: Mega
Mega	LERA MLSSan Antonio, TX	West South Central	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 22026 Tier: Mega
Mega	MARIS MLSSaint Louis, MO	West North Central	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 142026 Tier: Mega
Mega	MetrolistSacramento, CA	Pacific	MLS
Mega	MLS Type: Regional MLSOwnership Type: Hybrid# of Associations Served: 92026 Tier: Mega+
Mega	MLSListingsSunnyvale, CA	Pacific	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 82026 Tier: Mega
Mega	MLS NowBrooklyn Heights, OH	East North Central	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 132026 Tier: Mega
Mega	Monmouth/Ocean Regional RealtorsTinton Falls, NJ	Middle Atlantic	Association/MLS
Mega	MLS Type: Local MLSOwnership Type: Association2026 Tier: Mega
Mega	New Jersey MLSSaddle Brook, NJ	Middle Atlantic	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 12026 Tier: Mega
Mega	PrimeMLSConcord, NH	New England	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 212026 Tier: Mega
Mega	Realcomp II Ltd.Farmington Hills, MI	East North Central	MLS
Mega	MLS Type: Regional MLSOwnership Type: Hybrid# of Associations Served: 72026 Tier: Mega
Mega	realMLSJacksonville, FL	South Atlantic	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 12026 Tier: Mega
Mega	RealtracsBrentwood, TN	East South Central	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 82026 Tier: Mega
Mega	Regional Multiple Listing ServicePortland, OR	Pacific	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 122026 Tier: Mega
Mega	ROAM MLSMetairie, LA	West South Central	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 62026 Tier: Mega
Mega	The MLS/CLAWBeverly Hills, CA	Pacific	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 32026 Tier: Mega
Mega	Unlock MLS (formerly ACTRIS)Austin, TX	West South Central	Association/MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 12026 Tier: Mega
Mega	UtahRealEstate.comSandy, UT	Mountain	MLS
Mega	MLS Type: Regional MLSOwnership Type: Association# of Associations Served: 62026 Tier: Mega