Osterdock
- County:
- Clayton County
- County Seat:
- No
- Area (mi²):
- 0.395
- State:
- Iowa
Osterdock is a city located in Clayton County, Iowa. Osterdock has a 2026 population of 45. Osterdock is currently declining at a rate of -2.17% annually and its population has decreased by -2.17% since the most recent census, which recorded a population of 46 in 2020.
The median household income in Osterdock is $51,467 with a poverty rate of 43.38%. The median age in Osterdock is 48 years: 39.9 years for males, and 57.1 years for females. For every 100 females there are 106.1 males.