Iowa
Burlington
Peak Population (1960) : 32,430
Current (2020) : 23,982
Percentage Lost : 26.05%
Population Lost : 8,448
Clinton
Peak Population (1970) : 34,719
Current (2020) : 24,467
Percentage Lost : 29.53%
Population Lost : 10,252
Keokuk
Peak Population (1960) : 16,316
Current (2020) : 9,900
Percentage Lost : 39.32%
Population Lost : 6.416