Editing Zwingle, Iowa (section)

=== 2020 Census ===
As of the 2020 Census,<ref>{{Cite web |title=Explore Census Data |url=https://data.census.gov/profile/Zwingle_city,_Iowa?g=1600000US1987690 |access-date=2022-12-05 |website=data.census.gov}}</ref> there was a total population of 84 people. There was a population density of 430.8 people per square mile, spread over 0.2 miles. Of those 84 people, the median age was 26.9 years, with 17.1% of the town's population under the age of 18, all of which are also under the age of 5, 70% between the ages of 18 and 64, and 12.9% of the population over the age of 65. There were a total of 33 households, with an average of 2.5 people per household.

60% of the town's population is male, with 40% of the population female.<ref>{{Cite web |title=Census profile: Zwingle, IA |url=http://censusreporter.org/profiles/16000US1987690-zwingle-ia/ |access-date=2022-12-05 |website=Census Reporter |language=en}}</ref> The racial makeup of the town was 100% White. 2.9% of the population are of English descent, 1.4% French, 45.7% German, 25.7% Irish, and 1.4% Norwegian.

The average income per capita of Zwingle was $19,572, which is far lower than the state average, and the median household income was $65,600, which is higher than the state average. 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 town also has a lower-than-average percentage of the population having received college degrees, only 6.4% of the town's population has received a college degree compared to the state average of 30.5%.

5.2% of the town's population were veterans.