Hewitt encompasses 6.86 square miles (4,389.44 acres) south of Waco on Interstate 35. It is less than 100 miles from the Dallas-Forth Worth Metroplex to the north and Austin to the south. Hewitt residents can easily make day trips to these Texas hubs of industry, culture, and business. The key location on America's Highways also makes Hewitt a great place for businesses while residents still enjoy a quaint, small-town atmosphere. Hewitt is part of McLennan County with neighboring communities, including Woodway, McGregor, Robinson, Waco, and Lorena. It is located less than 15 miles from Lake Waco and the Brazos River.