Barnes Lake is a census-designated place (CDP) in the southwest quadrant of Deerfield Township, Lapeer County, Michigan, United States, surrounding a lake of the same name.Deerfield Township, MI. Google Maps. Accessed 11 January 2026. It is bordered to the west by the CDP of Millers Lake. M-24 forms the border between the two CDPs; the state highway leads north to Mayville and south to Lapeer. As of the 2020 census, Barnes Lake had a population of 768.
Barnes Lake was first listed as a CDP prior to the 2020 census. Previously, the community was part of the Barnes Lake-Millers Lake CDP. Demographics
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