The La Grange flag has a field of three horizontal stripes of equal width: a medium warm blue stripe at the top, a white stripe at the center, and a medium warm green at the base. At the left-center of the flag is a circle containing an irregularly striped tree symbol in dark green on a light cool blue background in the center. This tree has the numerals 1879 in white. Around this center field is a white stripe with La Grange printed at the top and Illinois at the bottom. Both words are printed in dark green Gothic letters. This white stripe is bordered with a narrow band of the same light cool blue of the center field.