Casco History:

This township composed of town 4 north range 15 east, was set off by act of March 15, 1849, from the township of China. The source and meaning of the name are uncertain, but is probably is derived from the town of Casco in Maine, and may have been suggested by Captain John Clarke of China, who came from Maine.

The resident owners upon the assessment roll of 1840 were: Section 1. William Fenton, John Tappan, Elijah and Cortland Lindsay; section 2. Orange Fenton, Richard Freeman; section 5. Dennis Bates; section 6. James Reynolds; section 10. Hiram A. and Alonzo Allen, Charles Davis; section 11. Phineas Kinyon; section 24. Claude Duchene; section 25. Francis Phenix; section 26. Moses Duchene.

The St. Clair branch of the Michigan Central Railroad traverses the north end of the township, and it contains the unincorporated village of Adair, named by the English contractor who constructed the railroad.

The population statistics of the township are: 1850, 134; 1860, 1,084; 1870, 1,992; 1880, 2,212; 1890, 1,811; 1900, 1,722; 1910, 1,413.

Casco Township was organized in 849, with William Hart, Supervisor, while yet its population did not exceed 134 souls. All sections of the township are within easy distance of the St. Clair, and of the Grand Trunk Railroads. The equalized valuation for 1882 is $395,680; the number of acres, 22, 755; the population, 2,212 including 863 children of school age. Among the first permanent settlers were A. Tappan, H. A. Allen, Denis Bales and R. Freeman. In the following list of early land purchasers, the names of other old settlers are given.