During the early 19th century, many settlers from the east coast of the United States traveled to Galena after the establishment of lead mines in the area.

Another settler, Samuel Reed, planted 14 acres (57,000 m2) of corn in 1831, and by 1832 he also included wheat on the first farm in Ogle County.

When the men returned to Buffalo Grove, they found the body of William Durley in the road near the woods.

[2][5] The settlement continued to grow, including the establishment of the Buffalo Grove Post Office on February 12, 1833.

The following year the town was platted and named St. Marion, but when the post office was established it was called Buffalo Grove.

[2] When construction of the Illinois Central Railroad (ICRR) began in 1852, the village population was nearly 1,000 residents; in 1835 15 families lived in the vicinity of Buffalo Grove.

[8] Nearly all residents from Buffalo Grove moved their homes and businesses to Polo in order to take advantage of the new railroad.

[2] The Buffalo Grove Post Office was moved in the dead of night in January 1855 to avoid trouble.

[9][10] Today, Buffalo Grove no longer remains as a true village, instead having about a dozen homes in its area.