haʊˈɛvɚ, ðɪ ɛɡzˈækt sˈɛntɚɹ ʌv ˌɪlənˈɔɪ ɪz ɐbˌaʊt ˈeɪt mˈaɪlz saʊθwˈɛst ʌv tʃˈɛstnʌt, ænd ɔnðɪ ˈʌðɚ sˈaɪd ʌvðə tˈaʊn ʌv mˈaʊnt pjʊlˈæski, æɾ ˈeɪɾi nˈaɪn dᵻɡɹˈiːz ˈeɪtiːn.fˈoːɹ w fˈoːɹɾi dᵻɡɹˈiːz zˈiəɹoʊ.ˈeɪt n.
However, the exact center of Illinois is about eight miles southwest of Chestnut, and on the other side of the town of Mount Pulaski, at 89°18.4'W 40°0.8'N.