Stillman Valley is a village in Marion Township, Ogle County, Illinois, United States.

It lies east of Byron, south of Rockford and west of Davis Junction.

According to the 2010 census, Stillman Valley has a total area of 0.54 square miles (1.40 km2), all land.

[2] Stillman Valley was founded by European-American settlers in north central Illinois in 1876.

When 275 Illinois militiamen under Maj. Isaiah Stillman were put to flight by Black Hawk and his warriors."

Stillman Valley has a Board of Trustees who serve alternating four-year terms.

The Village President (as of May 2013) is the Honorable Becky Waltrip; her first term ends in 2017.

A November 28, 2009, headline from the Rockford Register Star proclaims it, "Valley of The Champions" in reference to the boys football program with state championships in 1999, 2000, 2003, 2009,[8] and 2013.