What's in the Maryland file
| Agents on file | 7,481 |
|---|---|
| Business addresses (real estate firms' own websites) | 392 |
| Email addresses in the file | 7,873 |
| Each email last read on a public page | Sep 16, 2026 to Oct 8, 2026 |
| Rows with a phone number | 93% |
| Rows on their own business domain | 42% |
| Rows on a free mailbox | 17% |
| Brokerage brands in the file | 17 |
| Cities sold as a file of their own | 28 |
| The whole file, one-time | $149 |
| Columns in every row | Name, Email, Phone, Brokerage, City, State, Data Source |
kw.com outnumbers Gmail in the Maryland file
No address ending turns up in more Maryland rows than kw.com, at 1,371. Gmail is second with 1,004, narrowly ahead of remax.net at 987, with compass.com fourth at 780.
Keller Williams' Maryland rows sit mainly on kw.com, 1,365 of 1,580; RE/MAX has 987 of 1,010 on remax.net, and Compass 779 of 782 on compass.com. Among brands with at least 300 Maryland agents on file, the ones where more than half use gmail.com instead are Real Brokerage (260 of 470) and HomeSmart (292 of 458).
For calls, 93% of the Maryland rows include a phone number. Our October 2026 walks added 401 Maryland rows the file did not hold before; they are new to us, not necessarily new to their brokerages.
Keller Williams first, then RE/MAX ahead of Coldwell Banker in Maryland
Keller Williams has 1,580 of the 7,481 Maryland agents on file, 21% of the ones carrying a brand, a little above its 19% of our US file.
RE/MAX is second with 1,010, edging out Coldwell Banker at 972. Our US file has the two the other way round, Coldwell Banker second and RE/MAX third; RE/MAX holds 13% of the branded Maryland rows, against 10% in our US file.
Berkshire Hathaway HomeServices (801 agents, 11% here, 8% in our US file) and Compass (782 agents, 10% here, 7% in our US file) both run above their US-file share in Maryland.
Among company names that begin with Century 21, CENTURY 21 New Millennium is on the most Maryland rows, 357.
Baltimore, Annapolis and Upper Marlboro: the three biggest Maryland city files
Baltimore has the biggest Maryland city file, 699 addresses, followed by Annapolis with 625 and Upper Marlboro with 496. In all, 28 Maryland places have a file of their own.
In some of those towns one brand accounts for most of the file: Upper Marlboro, where Keller Williams is the company on 378 of the 496 rows; Millersville, where Keller Williams is the company on 279 of the 316 rows; and Chevy Chase, where Compass is the company on 268 of the 271 rows.
Keller Williams fills six lines of the table below, the first being Upper Marlboro with 378. Each Keller Williams line counts the rows in one town whose company reads only "Keller Williams", so it can take in more than one office; the Compass and Berkshire Hathaway HomeServices lines are built the same way. Among lines with a full company name, the largest is Coldwell Banker Realty in Annapolis, with 223 rows. RE/MAX's 1,010 Maryland rows are not in the table.
| Office | City | Agents on file |
|---|---|---|
| Keller Williams | Upper Marlboro | 378 |
| Keller Williams | Millersville | 279 |
| Compass | Chevy Chase | 268 |
| Coldwell Banker Realty | Annapolis | 223 |
| Keller Williams | Columbia | 164 |
| Keller Williams | Baltimore | 155 |
| Compass | Bethesda | 143 |
| Keller Williams | Lutherville | 139 |
| Keller Williams | Ellicott City | 122 |
| Berkshire Hathaway HomeServices | Baltimore | 117 |