Ranked: Top 100 MLS By Number of Listings in 2021

by Feb 4, 2022

Each year, Home ASAP works with over 200 MLSs from every corner of the US to provide agents with IDX services. That accounts for roughly 95% of all US residential listings! Here are 100 of the largest MLSs in the US based on the number of listings we imported in 2021.

How Does Home ASAP Use MLS Data?

Home ASAP uses listing data to provide a variety of services for real estate agents. This includes our highly regarded IDX Home Search. With this tool, agents can offer potential clients their own agent-branded MLS search which is promoted automatically on Facebook.

Here are some more of the products powered by our IDX feeds:

Top MLSs By Number of Listings Imported

Note: The numbers used here may vary from the actual number of listings due to a number of factors. Please see the Technical Notes section for more information.

Rank MLS Name Headquarters # of Listings
1 Combined L.A./Westside (CLAW) MLS CA 142,380
2 California Regional MLS (CRMLS) CA 126,706
3 Midwest Real Estate Data (MRED) IL 93,092
4 Stellar MLS FL 73,252
5 Bright MLS MD 68,426
6 Conejo Simi Moorpark Association of REALTORS® (CSMAR) CA 65,904
7 San Diego MLS CA 43,401
8 OneKey MLS NY 33,633
9 Beaches MLS FL 32,164
10 Houston Association of REALTORS® (HAR) TX 30,211
11 Martin County REALTORS® of the Treasure Coast FL 28,868
12 Ann Arbor Area Board of REALTORS® MI 27,931
13 Georgia MLS (GAMLS) GA 26,968
14 MiRealSource MI 25,693
15 Wasatch Front Regional MLS (Utah Real Estate) UT 22,791
16 First Multi Listing Service (FMLS) GA 22,746
17 Arizona Regional MLS AZ 19,907
18 Realcomp II Ltd. MI 17,642
19 RE Colorado (Metrolist MLS) CO 17,087
20 Canopy MLS (formerly Carolina Multiple Listing Services, Inc., consolidated with NC Mountains) NC 15,431
21 Miami MLS FL 15,323
22 Contra Costa Association of REALTORS® CA 15,165
23 Northstar MLS MN 14,673
24 Northwest MLS WA 14,427
25 New York State Alliance NY 14,343
26 Austin Board of REALTORS® TX 13,565
27 MidAmerica Regional Information Systems MO 13,518
28 Southern Missouri Regional MLS MO 13,321
29 Oklahoma City Metropolitan Board of REALTORS® OK 12,605
30 Triangle MLS NC 12,101
31 West Penn Multi-List PA 11,143
32 Florida Gulf Coast MLS (Royal Palm Coast REALTORS® Association) FL 10,970
33 Metro Indianapolis Board of REALTORS® IN 10,241
34 REALTRACS (Middle Tennessee) MLS TN 10,101
35 Triad Multiple Listing Service NC 9,954
36 BridgeMLS CA 8,217
37 Coop Arkansas REALTORS® MLS AR 8,091
38 SW Michigan Reg Information Center (MichRIC)/ Greater Regional Alliance MI 7,946
39 Monmouth/Ocean Multiple Listing Service NJ 7,944
40 Global MLS, Inc (Eastern New York Regional) NY 7,643
41 North Carolina Regional MLS (Cape Fear REALTORS®) NC 7,579
42 MLS Now (N. Ohio Regional MLS (NORMLS)) OH 7,495
43 SABOR San Antonio Board of REALTORS® TX 7,286
44 MLS Property Information Network (MLSPIN) MA 7,204
45 Knoxville Association of REALTORS® TN 6,839
46 Regional MLS OR 6,712
47 Smart MLS CT 6,707
48 Coastal Carolinas Association of REALTORS® SC 6,442
49 Las Vegas REALTORS® NV 6,379
50 Intermountain Multiple Listing Service ID 6,249
51 Charlottesville Area, Greater Augusta, and Harrisonburg Rockingham AOR VA 6,179
52 Real Estate Information Network VA 6,042
53 Greater Alabama MLS AL 5,853
54 Richmond Association of REALTORS® (Central Virginia Regional), became Virginia MLS CoOp Jan 2019 VA 5,590
55 Space Coast MLS FL 5,530
56 Indiana Regional MLS IN 5,370
57 Bay East Association of REALTORS® CA 5,204
58 Des Moines Area Association of REALTORS® IA 4,974
59 Greater Tulsa Association of REALTORS® OK 4,798
60 Central Oregon Association of REALTORS® OR 4,476
61 MLS of Greater Cincinnati OH 4,455
62 MLS of Southern Arizona (MLSSAZ) AZ 4,445
63 Lexington – Bluegrass Association of REALTORS® KY 3,916
64 Northwest Ohio REALTORS© (Formerly Toledo Board of REALTORS® (NORIS)) OH 3,718
65 Memphis Area Association of REALTORS® TN 3,678
66 California Desert AOR (DAMLS) CA 3,638
67 Greater Louisville Association of REALTORS® KY 3,617
68 Alaska Multiple Listing Service AK 3,613
69 Columbus Realtors MLS (CMLS) OH 3,422
70 Naples MLS (SW FL MLS) FL 3,405
71 IRES-Regional MLS of Northern Colorado CO 3,318
72 Montana Regional MLS (Missoula AOR) MT 3,152
73 Acadiana MLS (LBRMLS) LA 3,100
74 NE Florida MLS/RealMLS (Jacksonville) FL 3,089
75 Greater Greenville Association MLS SC 3,053
76 Rhode Island Association of REALTORS® RI 2,984
77 Northwest Arkansas BOR (NABOR) AR 2,983
78 Northern Nevada Regional MLS, Inc NV 2,978
79 Western Arizona REALTORS® Data Exchange (WARDEX) AZ 2,757
80 Chattanooga Association of REALTORS® TN 2,698
81 Corpus Christi Association of Realtors (Coastal Bend MLS – South Texas MLS) TX 2,663
82 Charleston Trident MLS SC 2,595
83 Central Texas MLS (Fort Hood, Four Rivers, etc) TX 2,568
84 Honolulu Board of REALTORS® HI 2,513
85 Greater Augusta Association of REALTORS® GA 2,497
86 Southwest Multiple Listing Service NM 2,476
87 Garden State MLS NJ 2,449
88 Tallahassee Board of REALTORS® FL 2,411
89 N. Kentucky Association of REALTORS® KY 2,320
90 REALTORS® Association of South Central Wisconsin WI 2,294
91 Baldwin County MLS AL 2,088
92 Tennessee Virginia MLS Board (Northeast Tennessee AOR) TN 2,046
93 Greater Antelope Valley Association of REALTORS® CA 2,044
94 Western Upstate Multiple Listing Service SC 2,006
95 Pensacola Association of REALTORS® FL 1,966
96 Hudson County MLS NJ 1,887
97 Willamette Valley MLS OR 1,851
98 Greater El Paso Association of REALTORS® TX 1,835
99 Consolidated MLS (Columbia) SC 1,814
100 REALTORS® Association of Citrus County FL 1,805

Technical Notes

While we tried to be as accurate as possible, a number of technical factors may cause the numbers of listings shown here to differ from the actual totals reported by the MLSs. This data is intended to only to show how many residential listing Home ASAP has processed from each MLS.

It’s also important to note that some MLSs such as RealComp MLS were added mid-year. This would cause their totals to appear lower even though they may be in a large metro area.

Other MLSs such as Beaches MLS offer multiple feeds with some overlap in listings. For these, we showed the estimated total only.

Finally, it’s also important to note that several MLSs have merged in the past year. In some cases, one MLS may have absorbed another MLS’s listings. In other cases, a completely new feed may have been created. Either way, the number of listings will have been affected.

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