When you’re buying or selling a home, having the right real estate agent makes all the difference. That’s why HomeLight analyzes performance data from each of Union County, SD’s 124 agents — so we can find the best fit for you. And what a difference having a top agent makes: The top 3% of agents in Union complete 67.8% more real estate transactions than the average agent. What’s more, these top agents save their sellers 3.5% more money than the average agent, and save their buyers 87.3% more.