Rochester is a CDP located in Cedar County, Iowa. Rochester has a 2026 population of 25. Rochester is currently declining at a rate of -19.35% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.
The median age in Rochester is 59.7 years: 59.6 years for males, and 73.1 years for females. For every 100 females there are 130.8 males.
Data after 2023 is projected based on recent change
Overall: 59.7 years
Female: 73.1 years
Male: 59.6 years
There are 90 adults, (39 of whom are seniors) in Rochester.
Female: 39 (43.3%)
Male: 51 (56.7%)
The racial composition of Rochester includes 60% White, and smaller percentages for and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 54 | 60% |
| Two or more races | 36 | 40% |