What is the setting of A Year Down Yonder by Richard Peck?

Per the Prologue, the novel takes place in 1937 in an unnamed rural town in Illinois. As the reader is told, 1937 has been a particularly bad year in the period that would later be called the Great Depression, and the impoverished circumstances of Mary Alice's family prompts Mary Alice's move to Grandma's town. Mary Alice has grown up in urban Chicago, and so the change is quite jarring for her, at least initially.