Complete List of MLS in Real Estate

Welcome to the complete list of MLSs in the United States. Save/pin/bookmark this list to have easy access to the most complete and update list of MLSs in real estate.

Understanding the MLS landscape is a complex task. This list and short article gives you a big-picture of the MLSs in the United States and how they serve consumers, real estate agents, and brokerages with listings and other services.

If we have forgotten your MLS or you know of an upcoming name change/merger, please leave us a note in the comments.

List of MLS in Real Estate

What is MLS in Real Estate?

Is there a single definition? Yes but if you’re not intimately familiar with MLSs outside of your local real estate market, these two will give you a better understanding.

An MLS is much more than a database of listings and the software used to access it. Each MLS is unique with their own staff, agreements with dozens (sometimes hundreds) of vendors for services, local rules, etc.

Your MLS is ultimately a collective of brokers that have signed covenants to establish and enforce rules for cooperation and compensation for sales.

The MLS is the foundation for how real estate brokers work with each other, both guidelines and enforcement of the rules, and the foundation on top of which technology platforms exist.

multiple listing service (MLS, also multiple listing system or multiple listings service) is a suite of services that real estate brokers use to establish contractual offers of compensation (among brokers) and accumulate and disseminate information to enable appraisals. A multiple listing service’s database and software is used by real estate brokers in real estate (or aircraft broker[1] in other industries for example), representing sellers under a listing contract to widely share information about properties with other brokers who may represent potential buyers or wish to work with a seller’s broker in finding a buyer for the property or asset. The listing data stored in a multiple listing service’s database is the proprietary information of the broker who has obtained a listing agreement with a property’s seller.

According to the U.S. National Association of Realtors:

In the late 1800s, real estate brokers regularly gathered at the offices of their local associations to share information about properties they were trying to sell. They agreed to compensate other brokers who helped sell those properties, and the first MLS was born, based on a fundamental principle that’s unique to organized real estate: Help me sell my inventory and I’ll help you sell yours

Two of the larger ways that most agents interact with their MLS is:

  1. Adding information about new property listings that they and the thousands of other agents in the MLS to market. While a FSBO (for sale by owner) may only reach dozens or maybe hundreds of potential buyers, a property properly listed on the MLS and marketed by a licensed agent will reach 100x and potentially 1000x the number of potential buyers.
  2. Approval to access all MLS listings on their own website via an approved IDX plugin or IDX engine, like Showcase IDX. Each MLS is ultimately a steward of the brokers’ data and have a strict set of guidelines that an IDX plugin and home search must follow.

How many MLSs are in the United States?

There are approximately 600 MLSs in the United States, but the actual number is a moving target.

Many “MLSs” and local associations are merging and renaming. In as early as 2010, there were approximately 1,400 location associations/boards each with governing their own MLS practices across 54 states and territory associations of REALTORS® that house the local boards.

In the “old days”, each of those 1,400 local associations ran their own MLS. Today, we see more regional MLSs with a good many legacy MLS still operating that are focused on their hyper-local market they know best.

Even NAR does not publish an authoritative list of MLS in the United States.

When speaking at the RESO (Real Estate Standards Organization) Fall 2019 conference, a RESO official stated there are about 635 MLSs. By our count, there are 608.

Why do we maintain the complete list of MLSs in the United States?

First and most clear if you know any of our team, we’re data and software geeks that love real estate. We’ve been working with local MLSs to build tools for Realtors and brokers since 2005. There is no single authoritative MLS and no universal data format. The date/time of a new listing can be delivered using half a dozen different technologies in more 30+ different formats.

That makes working with real estate data too complex for many, and we love a challenge.

In early 2017, Kurt Uhlir joined our team. Kurt’s known as a 10x marketer that’s helped bring many business and life-changing technologies into our every day lives, but what many don’t know is he is the lead inventor on 13 U.S. and international patents including three foundational patents covering Waze, Google Maps, Apple Maps, check-in/location services (e.g. Foursquare, Facebook, etc.), and location-based advertising. If you’ve ever checked in on Foursquare, tagged a location on Facebook, or used Waze, you’ve used some of the technology he invented.

With his addition, we’ve been able to both geek out internally on building software for agents as well as speak more regularly at marketing and real estate conferences about it.

Second, as more and more of the real estate market call Showcase IDX the “IDX engine powering the best Realtor websites” and how the “consumer engagement tools Showcase IDX provide to real estate agents are unmatched. A smart company would never try to build their own Google Maps or Mapbox, instead you use one of them, just as modern real estate agents and companies are turning to Showcase IDX as the engine behind their websites and client engagement portion of their websites.”.

Those are big words for us to hear, and we’re extremely grateful to hear things like that every day. This list is part of us continuing to make things easier for you.

We deal with technology, so you do not have to, and we love geeking out on innovative technology that people use every day.

What are the largest MLSs in the country?

See our list of the largest 20 MLSs by following this link. It contains the number of agents in each MLS as well as their corporate offices.


Here is the complete list of MLSs in the United States


Multiple Listing Services in Alabama

Multiple Listing Services in Alaska

MLS in American Samoa

Samoa Properties Realtors (not an official MLS but a good local resource)

Multiple Listing Services in Arizona

Multiple Listing Services in Arkansas

Multiple Listing Services in California

Multiple Listing Services in Colorado

Multiple Listing Services in Connecticut

Multiple Listing Services in Delaware

Multiple Listing Services in Florida

Multiple Listing Services in Georgia

MLS in Guam

Multiple Listing Services in Hawaii

Multiple Listing Services in Idaho

Multiple Listing Services in Illinois

Multiple Listing Services in Indiana

Multiple Listing Services in Iowa

Multiple Listing Services in Kansas

Multiple Listing Services in Kentucky

Multiple Listing Services in Louisiana

Multiple Listing Services in Maine

Multiple Listing Services in Maryland

Multiple Listing Services in Massachusetts

Multiple Listing Services in Michigan

Multiple Listing Services in Minnesota

Multiple Listing Services in Mississippi

Multiple Listing Services in Missouri

Multiple Listing Services in Montana

Multiple Listing Services in Nebraska

Multiple Listing Services in Nevada

Multiple Listing Services in New Hampshire

Multiple Listing Services in New Jersey

Multiple Listing Services in New Mexico

Multiple Listing Services in New York

MLSs in North Carolina

Multiple Listing Services in North Dakota

Badlands Board Of REALTORS®
Bismarck-Mandan Board of REALTORS®
Fargo Moorhead Area Association of REALTORS®
Grand Forks Board of REALTORS®
Jamestown Board of REALTORS®
Minot Board of REALTORS®
Williston Board of REALTORS®

MLSs in Northern Mariana Islands

We’re not currently aware of one. Please comment if you have information on the local REALTOR association or MLS.

Multiple Listing Services in Ohio

Ashland Board of REALTORS®
Athens County Board of REALTORS®
Columbus and Central Ohio Regional MLS
Dayton MLS
Firelands MLS
Greater Portsmouth Area Board of REALTORS®
Heartland Board of REALTORS®
Knox County Board Of REALTORS®
Lancaster Board Of REALTORS
Mansfield Board of REALTORS®
Marion Board of REALTORS®
MLS of Greater Cincinnati (CincyMLS)
Northwest Ohio Regional Info Systems (NORIS) (may be joining Heartland)
Scioto Valley Association of REALTORS®
Tri State MLS (TSMLS)
West Central Association of REALTORS®
Western Regional Information Systems and Technology (WRIST)
Yes MLS

Multiple Listing Services in Oklahoma

Cushing Board Of REALTORS®
Duncan Association of REALTORS®
Lawton Board of REALTORS®
MLS Technology, Inc.
Multiple Listing Service of Oklahoma (MLSOK)
North Central Board Of REALTORS®
Northeast Oklahoma Board of REALTORS®
Northwest Oklahoma Association of REALTORS®
Southern Oklahoma Board of REALTORS®
Stillwater Board of REALTORS®

Multiple Listing Services in Oregon

Central Oregon Association of REALTORS®
Clatsop Association of REALTORS®
Klamath County Association of REALTORS®
Lincoln County Board of REALTORS®
Regional Multiple Listing Service (RMLS)
Southern Oregon MLS (SOMLS)
Willamette Valley MLS

MLSs in Pennsylvania

Allegheny Highland Association of REALTORS®
Allegheny Valley Board of REALTORS®
Bradford Sullivan Association of REALTORS®
Cambria Somerset Association of REALTORS®
Central Susquehanna Valley Board of REALTORS®
Centre County Association of REALTORS®
Clearfield Jefferson Association of REALTORS®
Elk Cameron Board of REALTORS®
Fayette Board of REALTORS®
Greater Erie Board of REALTORS®
Greater Lehigh Valley REALTORS®
Greater Scranton Board of REALTORS®
Huntingdon County Board of REALTORS®
Luzerne County Association of REALTORS®
Mckean County Association of REALTORS®
North Central Penn Board of REALTORS®
Pike/Wayne Association of REALTORS®
Pocono Mountains Association of REALTORS®
Realtors Association Of York Adams Counties
Warren County Board Of Realtors
West Branch Valley Association of REALTORS®
West Penn Multi-List

Multiple Listing Services Puerto Rico

Puerto Rico MLS (PRMLS-RETS)
Arecibo Board of REALTORS®
Bayamon Board of REALTORS®
Caguas Board of REALTORS®
Mayaguez Board of REALTORS®
Ponce Board of REALTORS®

Puerto Rico Association of REALTORS®
San Juan Board of REALTORS®

Multiple Listing Services in Rhode Island

StateWide MLS

Multiple Listing Services in South Carolina

Aiken MLS
Charleston Trident MLS (CTMLS)
Cherokee County Board of REALTORS®
Coastal Carolina Association of REALTORS®
Consolidated MLS
Greater Greenville Association of REALTORS®
Greenwood Association of REALTORS®
Hilton Head Island MLS (HHIMLS)
Lowcountry Regional Multiple Listing Service Inc.
Pee Dee REALTOR® Association
Piedmont Regional Association of REALTORS®
Palmetto MLS
Spartanburg Association of REALTORS®
Sumter Board of REALTORS®
Western Upstate Association of REALTORS®

Multiple Listing Services in South Dakota

Aberdeen Board of REALTORS®
Black Hills MLS (BHMLS)
Central South Dakota Board of REALTORS®
East Central South Dakota Board of REALTORS®
Huron Board of REALTORS®
Lewis and Clark Board of REALTORS®
Mitchell Board of REALTORS®
Northeast South Dakota Association of REALTORS®
REALTOR® Association Of The Sioux Empire

Multiple Listing Services in Tennessee

Central West Tennessee Association of REALTORS®
Great Smoky Mountains Association of REALTORS®
Greater Chattanooga Association of REALTORS®
Knoxville Area Association of REALTORS®
Lakeway Area Association of REALTORS®
Memphis Area Association of REALTORS®
RealTracs
Reelfoot Regional Association of REALTORS®
River Counties Association of REALTORS®
Tennessee Valley Association of REALTORS®
Tennessee Virginia Regional MLS (TVRMLS)
Upper Cumberland Association of REALTORS®

Multiple Listing Services in Texas

Amarillo Association of REALTORS®
Austin Central Texas Realty Information Service (ACTRIS)
Beaumont Board of REALTORS®
Brazoria County Board of REALTORS®
Brownsville-South Padre Island Board of REALTORS®
Bryan-College Station Association of REALTORS®
Coastal Bend Association of REALTORS®
Corpus Christi Association of REALTORS®
Dalhart Board of REALTORS®
Dumas Board of REALTORS®
Eagle Pass Board of REALTORS®
Galveston Association of REALTORS®
Gillespie County Board of REALTORS®
Greater El Paso Association of REALTORS®
Greater McAllen Association of REALTORS®
Greater Tyler Association of REALTORS®
Harlingen Board of REALTORS®
Henderson County Board of REALTORS®
Highland Lakes Association of REALTORS®
Houston Association of REALTORS® (HARMLS) {TOP 20 MLS}
Kerrville Board of REALTORS®
Laredo Association of REALTORS®
Longview Area Association of REALTORS®
Lubbock Association of REALTORS®
Lufkin Association of REALTORS®
Nacogdoches County Board of REALTORS®
North Texas Real Estate Info Systems (NTREIS) {TOP 20 MLS}
Odessa Board of REALTORS®
Pampa Board of REALTORS®
Permian Basin Board of REALTORS®
Plainview Association of REALTORS®
Port Neches, Port Arthur, Nederland Board of REALTORS®
Rockport Area Association of REALTORS®
San Angelo Association of REALTORS®
San Antonio Board of REALTORS® (SABOR)
San Patricio County Association of REALTORS®
South Padre Island Board of REALTORS®
Uvalde Board of REALTORS®
Waco MLS (WACOMLS)
Wichita Falls Association of REALTORS®

Multiple Listing Services in the U.S. Virgin Islands

St. Croix Board of Realtors
St. John Board of Reahttp://stjrealtorsvi.com/ltors
St. Thomas Board of Realtors
Virgin Islands Territorial Association of Realtors®

MLSs in Utah

Iron County Board of REALTORS®
Park City Board of REALTORS®
Wasatch Front Regional MLS (WFRMLS)
Washington County Board of REALTORS®

Multiple Listing Services in Virginia

Central Virginia Regional MLS (CVRMLS)
Dan River Region Association of REALTORS®
Eastern Shore Association of REALTORS®
Hamptons North Fork REALTORS® Association
Lynchburg Association of REALTORS®
Martinsville, Henry, Patrick Counties Association of REALTORS®
New River Valley Association of REALTORS®
Northern Neck Association of REALTORS®
Real Estate Information Network (REIN)
Roanoke Valley Association of REALTORS®
Rockbridge Association of REALTORS®
South Central Virginia Association of REALTORS®
Southern Piedmont Land & Lake Association of REALTORS®
Southside Virginia Association of REALTORS®
Southwest Virginia Association of REALTORS®
Virginia MLS CoOp

Multiple Listing Services in Washington

North Central Washington MLS (NCWMLS)
Northwest Multiple Listing Service (NWMLS) {TOP 20 MLS}
Pacific Regional MLS (PACMLS)
Spokane Association of REALTORS®
Walla Walla Association of REALTORS®
Yakima Association of REALTORS®

Multiple Listing Services in West Virginia

Beckley Board of REALTORS®
Central West Virginia Multiple Listing Service
Fayette-Nicholas Board of REALTORS®
Greenbrier Valley Board of REALTORS®
Huntington Board of REALTORS®
Kanawha Valley Board of REALTORS®
Mercer Tazewell County Board of REALTORS®
Mid Ohio Valley MLS (MOVMLS)
North Central West Virginia Real Estate Information Network
Wheeling Board of REALTORS®

Multiple Listing Services in Wisconsin

Central Wisconsin Board of REALTORS®
Door County MLS
Greater Northwoods MLS
MCBOR MLS Inc
Metro MLS
REALTOR® Association of Northwest Wisconsin
REALTORS® Association of South Central Wisconsin Inc
REALTORS® Association of Northeast Wisconsin

Multiple Listing Services in Wyoming

Cheyenne Board of REALTORS®
Laramie Board of REALTORS®
Northeast Wyoming REALTOR® Alliance (NEWRA)
Northwest Wyoming Board of REALTORS®
Sheridan County Board of REALTORS®
Teton Board of REALTORS®

Looking for more information? Check out this article from my friend Sam DeBord on what the MLS landscape will look like in 2019. The charts and write up will give you a keen view for 2020 and 2021 too.


How to add MLS Real Estate Listings?

If you want to add MLS listings to your local MLS, you must be a licensed agent or broker and be a member of your local MLS.

If you want to add MLS listings to your website, you need a modern IDX engine that integrates with your local MLS.

Here are two quick videos that will save you from making some of the mistakes we’ve seen from analyzing more than 100,000 real estate websites.

Be sure to never use an IDX that uses iFrames or Subdomains on your website. Some have tried rebranding this outdated technology as “smart frames” but it’s the same 20-year-old technology that will hurt the chances of your site to rank organically on IDX.

Our exclusive IDX engine contains more than 2,000,000 active real estate listings and 22,800,000 images. It is continually updating new listings and images. Behind the scenes, it’s working for you, to update 110,000 listings and 152,000 images per hour to send new MLS listings to the IDX search pages on your site for some MLSs in as little as 10-15 minutes, so you can be confident that your clients and website visitors will see the most up-to-date listings, images, and information.

==> Click here to see our MLS Coverage page or start your free trial today.

How to add MLS search to your site?

An IDX plugin is the easiest and by far the best way to add home search and consumer engagement tools to your website that your clients will actually use.

Why add an IDX that your clients won’t use and will still send them to Zillow or Trulia where their contact info will be sold to competiting agents? Showcasers never have to worry about that – instead, they’ve learned how to turn their website into a real estate lead generation machine.


Get the website you deserve

Don’t Just Take Our Word For It

I switched from IDX Broker

I get more voluntary sign ups than I did with old provider. I think that speaks for itself.

Would You Bet Your Business On A IDX Solution?

We effectively compete every day with Zillow, Trulia and Redfin. Showcase Idx is critical to our success...Our site stats are over 12K unique users per week. That is up significantly from a year ago when we were on Wolfnet Idx.

Best IDX Solution out there

No solution even compares with what Showcase IDX offer. There is no way I would steer clients towards any other solution.

Best IDX plugin by far!

Showcase IDX is now the only IDX I recommend to my clients. Visually, it is stunning and so much better than the other IDX’s. To top it off, customer service is top notch

Showcase IDX brings the leads!

I am very happy to say Showcase IDX delivers the leads! I am often told by prospects and clients that our website is their favorite in town. A large amount of business is generated through our website presence.

An IDX Feed That's Above The Rest!

Showcase IDX is a better solution in regards to search rankings. I love the hot sheets and the simplicity to create "hot sheets" for different areas.

Converts website leads at a high level

Showcase IDX is leading the way in the world of WordPress IDX solutions. Clients love utilizing the Showcase IDX product with original features not found in any other product.

What I have been looking for all along.

I have used both Diverse Solutions and IhomeFinder. Neither delivered what I wanted. Since switching to Showcase, my bounce rate is down 20%, time spent on my site has doubled, and most importantly I am getting 4x more registrations on my site.

Your retention rate will be much higher

No subdomains or Iframes is probably my favorite feature, but at the end of the day it's about Results. I think the biggest thing is how "sticky" their site becomes. With Showcase IDX, the retention rate is much higher.

Showcase IDX Support Team Rocks

Showcase IDX has a streamlined interface and easy to navigate features that don't clutter our website or lock us into particular themes. But where they really shine is in their customer service.

The Best All-Around IDX For Realtors Wanting Results

We were previously using another IDX for our client sites. As a digital agency focused on measurable results, we were frustrated with the limitations we had. We started researching alternatives and thank god we found Showcase IDX.

WHAT ARE YOU WAITING FOR?

Since switching to Showcase, registrations and customer interaction have increased tremendously. Showcase is so much cleaner than just using our own MLS systems...easy to use even for a beginner starting their own website.

Showcase IDX all day everyday!

by far the best IDX solution out there. Forward thinking, always improving, with a clear focus on the interface - one of the major areas other providers fail. It feels like everyone else is still playing catch-up all these years later.

Best WordPress IDX, period.

Simple to use (i.e. low bounce rates and high user engagement), great mapping with polygon search, fantastic mobile responsive functionality, ‘login with facebook’, ultra-fast, and they are always adding or updating functionalities.

Head and shoulders above the rest, and it's really not even close.

Showcase IDX is head and shoulders above the rest, and it's really not even close. We fully expect more of the agents and brokers we work with to love the value and flexibility Showcase IDX provides, especially as results our current users are seeing continue to improve.


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Chief Marketing Officer
Entrepreneurial marketing leader that’s built and run organizations from start-up to over $500M annual revenue. He brings a unique combination of storytelling and innovation to the team, having led marketing for many brands. Kurt’s a regular conference speaker and workshop leader around modern marketing tactics that actually drive sales. In addition, he has been asked to coach and advise thousands of leaders, from startup founders to the President of the United States.
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