Primary Road No. 20
Route information
Maintained by Iowa State Highway Commission
Existed	1920–1926
Location
Country	United States
State	Iowa
Highway system
Iowa Primary Highway System Interstate US State Secondary Scenic
← US 20 → Iowa 21

Primary Road No. 20 (No. 20) was the designation of a state highway in Iowa that ran from the Missouri state line at Keokuk to the Minnesota state line near Cresco. No. 20 was in existence for six years—from 1920 to 1926. Today, the route is related to the following highways:

• U.S. Highway 61 between Missouri and Dubuque
• U.S. Highway 52 (formerly U.S. Highway 55) between Dubuque and Decorah
• Iowa Highway 9 between Decorah and Cresco
• Iowa Highway 139 between Decorah and Minnesota

This article includes a list of roads, streets, highways, or other routes that are associated with the same title.
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