In 1863, he moved to Monroe County where he founded South Rockwood and engaged in milling, manufacturing barrel staves, heading, lumber, merchandising, farming and raising cattle.
[4] In 1860, Strong was elected as a Democrat to the Michigan House of Representatives from Wayne County (2nd district), just as his father had been from 1835 to 1836, and served from 1861 to 1862.
He was the first Democrat to be elected to the office of lieutenant governor in Michigan since Andrew Parsons thirty-eight years earlier.
In 1912, he served as an alternate delegate from Michigan to the Democratic National Convention which nominated for U. S. President Woodrow Wilson who won in the general election.
He died in South Rockwood just five days before his eighty-third birthday and one month after Wilson's first inauguration.