[5] Earl E. Herrin (1892–1964), Illinois state representative and businessman, was born in St.

[6] Shawn Mcsparin, drummer for country rock band Shotgun Creek, also calls Saint Jacob home.

[7] U.S. Route 40 passes through the north side of the village, leading northeast 6 miles (10 km) to Highland and west the same distance to Troy.

There were 321 housing units at an average density of 574.3 per square mile (221.7/km2).

[9] Of the 301 households 37.2% had children under the age of 18 living with them, 67.8% were married couples living together, 6.0% had a female householder with no husband present, and 22.9% were non-families.