Odell is in northern Livingston County, in the northern part of Odell Township. Interstate 55 passes north and west of the village, with access from Exit 209. I-55 leads northeast 9 miles (14 km) to Dwight and 87 miles (140 km) to downtown Chicago, while to the southwest it leads 11 miles (18 km) to Pontiac, the Livingston county seat, and 48 miles (77 km) to Bloomington. Historic US 66 passes through the northwest side of the village, on a bypass predating I-55.

Odell is in northeastern Hood River County, in the valley of Odell Creek, a tributary of the Hood River. It is 7 miles (11 km) south of the city of Hood River, the county seat. According to the United States Census Bureau, the CDP has a total area of 2.0 square miles (5.2 km ), all land.
This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F. According to the Köppen Climate Classification system, Odell has a