United States Illinois Barrington
Illinois · Barrington · 2026
Top real estate brokerages in Barrington, IL
Count taken September 5, 2026Page built September 5, 2026
304 real estate agents in Barrington, Illinois had a published brokerage profile on September 5, 2026. Keller Williams is the largest real estate brokerage in Barrington with 170 agents, 55.9% of the 304 whose profile names a brokerage; the three largest together hold 90%.
Real estate brokerages in Barrington, ranked by agents
Every brokerage with 3 or more agents in Barrington. A company that publishes no office names appears as one row covering all its offices in the city.
| Brokerage | Agents | Share of attributed agents | Brand | |
|---|---|---|---|---|
| 1 | Keller Williams | 170 | 55.9% | |
| 2 | Compass | 89 | 29.3% | |
| 3 | Berkshire Hathaway HomeServices | 16 | 5.3% | |
| 4 | HomeSmart | 11 | 3.6% | |
| 5 | RE/MAX | 10 | 3.3% | |
| 6 | Real Broker | 4 | 1.3% | Real Brokerage |
| 7 | Sotheby's International Realty | 3 | 1.0% |
Plus 1 more brokerage with one agent each.
How Barrington compares with Illinois
Barrington holds 2.1% of the agents counted in Illinois and ranks 5th of the 425 Illinois cities with at least one agent. The largest brokerage's share is 55.9% here against 15.1% for RE/MAX across Illinois as a whole, so the Barrington market is more concentrated than the state. 2.8% of the 215 checked agents in Barrington have a website of their own, against 7.6% statewide. 95.4% publish a direct phone number (statewide 93.2%).
How many real estate agents are in Illinois?
Other Illinois cities
- Chicago 3,064
- Naperville 814
- Orland Park 525
- Hinsdale 324
- Arlington Heights 300
- Bloomington 298
- Libertyville 295
- Glen Ellyn 251
- Glenview 251
- Oak Lawn 233
- Edwardsville 227
- Saint Charles 220
- Champaign 205
- Schaumburg 196
- Oak Park 180
Where the data comes from
Counted from the public agent directories of 8 brokerage brands with agents in Barrington. Independent brokerages outside those networks are not counted, so this is a ranking among the networks we can see, not a census of every licensee in the city. Full method on the national page.
The count comes from a per-agent file kept by usrealtorlist.com (the Illinois realtor email list); an agent is included only with a published, current email, which is what keeps the figure to working agents.
Questions this page answers
- What is the largest real estate brokerage in Barrington, IL?
- Keller Williams with 170 agents, 55.9% of Barrington agents whose profile names a brokerage, ahead of Compass (89).
- How many real estate agents are in Barrington, IL?
- 304 as of September 5, 2026, counting agents with a published brokerage profile. That is 2.1% of the 14,250 counted in Illinois.
Cite this page
Realty Census (2026). Top real estate brokerages in Barrington, IL: 304 agents. Count dated 2026-09-05. https://realtycensus.com/illinois/barrington/