The men of the Old 3rd Michigan Infantry died literally all over the United States and Canada. They are buried as far west as California and British Columbia, as far south as Key West, Florida and as far north as Montana and Maine:
District of Columbia 34
Georgia 13 (11 at Andersonville)
New Hampshire 1
New Jersey 2
New York 33
North Carolina 8 (5 in mass grave at Salisbury)
North Dakota 1
Rhode Island 1
South Carolina 8
South Dakota 2
Washington state 15
The great majority are buried in Michigan and Virginia. In fact, at least 881 of men who served in the Old 3rd Michigan Infantry, or nearly 62% of the total enrolled, died and were buried in Virginia or Michigan.
Of the 683 men reportedly buried in Michigan, by far the largest number (208) are found in Kent County, and of that number 42 are buried in the “Michigan Soldiers’ Home” Cemetery in Grand Rapids.
The Michigan counties with the next highest number of burials are Ottawa (53), Ionia (50), Barry (38), Muskegon (28) and Newaygo (22).
Many of the 195 men buried in Virginia are probably interred in unknown graves scattered throughout the state, like so many thousands of soldiers.
For example, it is likely that of the estimated 35 men who died at Fair Oaks, Virginia, on May 31, 1862, all are interred in Seven Pines National Cemetery, although we know exact locations for only a fraction of that number. And the men who died at Groveton on August 29, 1862, their remains were reportedly brought to Arlington National Cemetery and interred in a mass grave very close to the Custis-Lee mansion.
The fact that so many men who died in prison camps remain "unknown" is well-established. However, it is also quite likely that several of the Old 3rd soldiers who returned to Michigan during the war and died at home today rest in unmarked graves. This is particularly true for Samuel Camp in Lamont, Ottawa County, Francis Barlow, Henry Kampe and William Gibson in Grand Rapids, as well as Chauncey Strickland.