Kellogg's Grove is an area in western Stephenson County, Illinois, United States near the present-day unincorporated town of Kent. The grove is considered historically significant because it was the site of two minor skirmishes during the Black Hawk War in 1832. Today, most of the grove is privately owned but 1.5 acres (6,100 m2) are allocated as a park owned by Stephenson County. While most of the battle occurred on what is today private property the park contains a monument dedicated to the battle and cemetery with the graves of several militia members killed during the skirmish at Kellogg's Grove. The cemetery also holds the graves of those killed in other area battles. The Kellogg's Grove battle site was added to the U.S. National Register of Historic Places in 1978.