United States Iowa Sioux City
Iowa · Sioux City · 2026
Top real estate brokerages in Sioux City, IA
Count taken September 5, 2026Page built September 5, 2026
135 real estate agents in Sioux City, Iowa had a published brokerage profile on September 5, 2026. Keller Williams is the largest real estate brokerage in Sioux City with 63 agents, 46.7% of the 135 whose profile names a brokerage; the three largest together hold 92%.
Real estate brokerages in Sioux City, ranked by agents
Every brokerage with 3 or more agents in Sioux City. 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 | 63 | 46.7% | |
| 2 | CENTURY 21 ProLink | 45 | 33.3% | Century 21 |
| 3 | Coldwell Banker Associated Brokers Realty | 16 | 11.9% | Coldwell Banker |
| 4 | RE/MAX | 7 | 5.2% | |
| 5 | Berkshire Hathaway HomeServices | 4 | 3.0% |
How Sioux City compares with Iowa
Sioux City holds 6.1% of the agents counted in Iowa and ranks 5th of the 100 Iowa cities with at least one agent. The largest brokerage's share is 46.7% here against 48.8% for RE/MAX across Iowa as a whole, so the Sioux City market is about as concentrated as the state. 0.7% of the 135 checked agents in Sioux City have a website of their own, against 3.4% statewide. 96.3% publish a direct phone number (statewide 90.1%).
How many real estate agents are in Iowa?
Other Iowa cities
- West Des Moines 212
- Des Moines 211
- Ankeny 175
- Cedar Rapids 154
- Waukee 103
Where the data comes from
Counted from the public agent directories of 5 brokerage brands with agents in Sioux City. 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 Iowa real estate agent list; nothing per agent appears here.
Questions this page answers
- What is the largest real estate brokerage in Sioux City, IA?
- Keller Williams with 63 agents, 46.7% of Sioux City agents whose profile names a brokerage, ahead of CENTURY 21 ProLink (45).
- How many real estate agents are in Sioux City, IA?
- 135 as of September 5, 2026, counting agents with a published brokerage profile. That is 6.1% of the 2,203 counted in Iowa.
Cite this page
Realty Census (2026). Top real estate brokerages in Sioux City, IA: 135 agents. Count dated 2026-09-05. https://realtycensus.com/iowa/sioux-city/