Keller Williams Realty Infinity offers local real estate market knowledge with global reach. Keller Williams Realty, Inc. is an international real estate franchise company with approximately 120,000 real estate agents, operating in 700 offices across the globe. Our agents live where they work, providing in-depth experience covering communities throughout Northern Illinois, from the far southern and western suburbs of Chicago, up to the Wisconsin border.Keller Williams offers an agent-centric culture with an emphasis on world-class education and training, where sales associates are treated as business partners. Training magazine recently named Keller Williams as the #1 training organization across all industries worldwide.