List of United States cities by population Cities formerly over 100,000 people Cities formerly over 100,000 people

| City | State_ | _2010_population | Peak_population_year | Numeric_decline_from_peak_population | Percent_decline_from_peak_population |
|---|---|---|---|---|---|
| New Bedford | Massachusetts | 95072 | 121217 (1920) | -26145 | -21.57% |
| Niagara Falls | New York | 50194 | 102394 (1960) | -52200 | -50.98% |
| Parma | Ohio | 81601 | 100216 (1970) | -18615 | -18.57% |
| Portsmouth | Virginia | 95535 | 114773 (1960) | -19238 | -16.76% |
| Reading | Pennsylvania | 88082 | 111171 (1930) | -23089 | -20.77% |
| Roanoke | Virginia | 97032 | 100220 (1980) | -3188 | -3.18% |
| Scranton | Pennsylvania | 76089 | 143333 (1930) | -67244 | -46.91% |
| Somerville | Massachusetts | 75754 | 103908 (1930) | -28154 | -27.10% |
| St. Joseph | Missouri | 76780 | 102979 (1900) | -26199 | -25.44% |
| Trenton | New Jersey | 84913 | 128009 (1950) | -43096 | -33.67% |
| Utica | New York | 62235 | 101740 (1930) | -39505 | -38.83% |
| Wilmington | Delaware | 70851 | 112504 (1940) | -41653 | -37.02% |
| Youngstown | Ohio | 66982 | 170002 (1930) | -103020 | -60.60% |