United States Colorado Castle Rock
Colorado · Castle Rock · 2026
Top real estate brokerages in Castle Rock, CO
Count taken September 5, 2026Page built September 5, 2026
168 real estate agents in Castle Rock, Colorado had a published brokerage profile on September 5, 2026. HomeSmart is the largest real estate brokerage in Castle Rock with 107 agents, 63.7% of the 168 whose profile names a brokerage; the three largest together hold 85%.
Real estate brokerages in Castle Rock, ranked by agents
Every brokerage with 3 or more agents in Castle Rock. 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 | HomeSmart | 107 | 63.7% | |
| 2 | Keller Williams | 22 | 13.1% | |
| 3 | RE/MAX | 13 | 7.7% | |
| 4 | CENTURY 21 Altitude Real Estate | 11 | 6.5% | Century 21 |
| 5 | Real Broker | 8 | 4.8% | Real Brokerage |
| 6 | LPT Realty | 5 | 3.0% |
Plus 2 more brokerages with one agent each.
How Castle Rock compares with Colorado
Castle Rock holds 1.5% of the agents counted in Colorado and ranks 16th of the 242 Colorado cities with at least one agent. The largest brokerage's share is 63.7% here against 22.9% for HomeSmart across Colorado as a whole, so the Castle Rock market is more concentrated than the state. 21.5% of the 163 checked agents in Castle Rock have a website of their own, against 14.6% statewide. 99.4% publish a direct phone number (statewide 95.5%).
How many real estate agents are in Colorado?
Other Colorado cities
- Denver 1,982
- Colorado Springs 1,101
- Englewood 715
- Boulder 469
- Westminster 450
- Lakewood 378
- Littleton 369
- Fort Collins 360
- Aurora 325
- Grand Junction 288
- Arvada 273
- Parker 231
- Highlands Ranch 221
- Centennial 215
- Pueblo 202
Where the data comes from
Counted from the public agent directories of 8 brokerage brands with agents in Castle Rock. 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 Colorado real estate agent list; nothing per agent appears here.
Questions this page answers
- What is the largest real estate brokerage in Castle Rock, CO?
- HomeSmart with 107 agents, 63.7% of Castle Rock agents whose profile names a brokerage, ahead of Keller Williams (22).
- How many real estate agents are in Castle Rock, CO?
- 168 as of September 5, 2026, counting agents with a published brokerage profile. That is 1.5% of the 10,945 counted in Colorado.
Cite this page
Realty Census (2026). Top real estate brokerages in Castle Rock, CO: 168 agents. Count dated 2026-09-05. https://realtycensus.com/colorado/castle-rock/