Zwingle is a city in Dubuque and Jackson counties in the U.S. state of Iowa.

It was near Zwingle that South Dakota Governor George S. Mickelson and seven others died in a plane crash in 1993.

[7] According to the United States Census Bureau, the city has a total area of 0.16 square miles (0.41 km2), all land.

2.9% of the population are of English descent, 1.4% French, 45.7% German, 25.7% Irish, and 1.4% Norwegian.

Only 7.1% of the population of the town lives under the poverty line, which 4 percentage points lower than the state average.

31% of the population of the town is identified as currently married, but only 6.7% of women between the ages of 15 and 50 gave birth during that year, higher than the average in the Dubuque Metro Area.

83% of the Zwingle population has received a high school degree, which is 9.5 percentage points less than the rest of the state.

The racial makeup of the city was 98.00% White, 1.00% Asian and 1.00% Pacific Islander.

There were no families and 1.4% of the population living below the poverty line, including no under eighteens and none of those over 64.