- Located at the intersection of Route T and Route AB
- Latitude: 37°11'20" N (+37.1889)
- Longitude: 89°55'06" W (-89.9183)
- Elevation: 544 feet above sea level
- Public Land Survey: T. 29 N., R. 10 E., Sec. 11
- Civil township: Liberty
As the crow flies, Glennon is...
Name origin
Named for Archbishop John Glennon, who gave
permission to establish a parish here on Nov. 29, 1905