Ohlman is a small village located in Montgomery County, Illinois. As of the 2000 census, the village had a total population of 0, although in 2004 the village received a requested recount that relists the community's population as 148.
Ohlman is located at 39°20'41" North, 89°13'3" West (39.344974, -89.217733).
According to the 2010 census, Ohlman has a total area of 0.38 square miles (0.98 km2), all land.
As of the census of 2000, there were no people living in the village. A recount in 2004 issued a revised population of 148.