United States California Ontario
California · Ontario · 2026
Top real estate brokerages in Ontario, CA
Count taken September 5, 2026Page built September 5, 2026
105 real estate agents in Ontario, California had a published brokerage profile on September 5, 2026. Coldwell Banker ICON is the largest real estate brokerage in Ontario with 72 agents, 68.6% of the 105 whose profile names a brokerage; the three largest together hold 95%.
Real estate brokerages in Ontario, ranked by agents
Every brokerage with 3 or more agents in Ontario. 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 | Coldwell Banker ICON | 72 | 68.6% | Coldwell Banker |
| 2 | Real Broker | 22 | 21.0% | Real Brokerage |
| 3 | HomeSmart | 6 | 5.7% | |
| 4 | LPT Realty | 5 | 4.8% |
How Ontario compares with California
Ontario holds 0.2% of the agents counted in California and ranks 137th of the 895 California cities with at least one agent. The largest brokerage's share is 68.6% here against 14.1% for Keller Williams across California as a whole, so the Ontario market is more concentrated than the state. 11.0% of the 100 checked agents in Ontario have a website of their own, against 10.5% statewide. 94.3% publish a direct phone number (statewide 90.9%).
How many real estate agents are in California?
Other California cities
- San Diego 2,517
- Los Angeles 1,393
- Beverly Hills 1,258
- San Francisco 1,148
- Newport Beach 912
- Pasadena 895
- Sacramento 879
- Irvine 849
- San Jose 762
- Long Beach 705
- Torrance 660
- Los Gatos 657
- Santa Monica 657
- Danville 640
- Roseville 622
Where the data comes from
Counted from the public agent directories of 4 brokerage brands with agents in Ontario. 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 underlying rows, one per agent with a published email, are sold by usrealtorlist.com as its California real estate agent list; nothing per agent appears here.
Questions this page answers
- What is the largest real estate brokerage in Ontario, CA?
- Coldwell Banker ICON with 72 agents, 68.6% of Ontario agents whose profile names a brokerage, ahead of Real Broker (22).
- How many real estate agents are in Ontario, CA?
- 105 as of September 5, 2026, counting agents with a published brokerage profile. That is 0.2% of the 58,902 counted in California.
Cite this page
Realty Census (2026). Top real estate brokerages in Ontario, CA: 105 agents. Count dated 2026-09-05. https://realtycensus.com/california/ontario/