United States California Diamond Bar
California · Diamond Bar · 2026
Top real estate brokerages in Diamond Bar, CA
Count taken September 5, 2026Page built September 5, 2026
171 real estate agents in Diamond Bar, California had a published brokerage profile on September 5, 2026. RE/MAX is the largest real estate brokerage in Diamond Bar with 114 agents, 66.7% of the 171 whose profile names a brokerage; the three largest together hold 93%.
Real estate brokerages in Diamond Bar, ranked by agents
Every brokerage with 3 or more agents in Diamond Bar. 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 | RE/MAX | 114 | 66.7% | |
| 2 | Coldwell Banker Tri-Counties Realty | 29 | 17.0% | Coldwell Banker |
| 3 | Real Broker | 16 | 9.4% | Real Brokerage |
| 4 | LPT Realty | 9 | 5.3% | |
| 5 | HomeSmart | 3 | 1.8% |
How Diamond Bar compares with California
Diamond Bar holds 0.3% of the agents counted in California and ranks 90th of the 895 California cities with at least one agent. The largest brokerage's share is 66.7% here against 14.1% for Keller Williams across California as a whole, so the Diamond Bar market is more concentrated than the state. 5.6% of the 162 checked agents in Diamond Bar have a website of their own, against 10.5% statewide. 89.5% 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 5 brokerage brands with agents in Diamond Bar. 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 Diamond Bar, CA?
- RE/MAX with 114 agents, 66.7% of Diamond Bar agents whose profile names a brokerage, ahead of Coldwell Banker Tri-Counties Realty (29).
- How many real estate agents are in Diamond Bar, CA?
- 171 as of September 5, 2026, counting agents with a published brokerage profile. That is 0.3% of the 58,902 counted in California.
Cite this page
Realty Census (2026). Top real estate brokerages in Diamond Bar, CA: 171 agents. Count dated 2026-09-05. https://realtycensus.com/california/diamond-bar/