City
|
State
|
Peak Population (Year)
|
2010 Population
|
% Decline From Peak
|
St. Louis
|
Missouri
|
856,796 (1950)
|
319,294
|
62.7%
|
Detroit
|
Michigan
|
1,849,568 (1950)
|
713,777
|
61.4%
|
Youngstown
|
Ohio
|
170,002 (1930)
|
66,982
|
60.6%
|
Cleveland
|
Ohio
|
914,808 (1950)
|
396,815
|
56.6%
|
Gary
|
Indiana
|
178,320 (1960)
|
80,294
|
55.0%
|
Pittsburgh
|
Pennsylvania
|
676,806 (1950)
|
305,704
|
54.8%
|
Buffalo
|
New York
|
580,132 (1950)
|
270,240
|
53.4%
|
Niagara Falls
|
New York
|
102,394 (1960)
|
50,194
|
51.0%
|
Flint
|
Michigan
|
196,940 (1960)
|
102,434
|
48.0%
|
Scranton
|
Pennsylvania
|
143,333 (1930)
|
76,089
|
46.9%
|
Dayton
|
Ohio
|
262,332 (1960)
|
141,527
|
46.1%
|
Cincinnati
|
Ohio
|
503,998 (1950)
|
296,943
|
41.1%
|
Utica
|
New York
|
101,740 (1930)
|
62,235
|
38.8%
|
New Orleans
|
Louisiana
|
627,525 (1960)
|
384,320
|
38.8%
|
Camden
|
New Jersey
|
124,555 (1950)
|
77,344
|
37.9%
|
Birmingham
|
Alabama
|
340,887 (1960)
|
212,237
|
37.7%
|
Canton
|
Ohio
|
116,912 (1950)
|
73,007
|
37.6%
|
Newark
|
New Jersey
|
442,337 (1930)
|
277,140
|
37.3%
|
Wilmington
|
Delaware
|
112,504 (1940)
|
70,851
|
37.0%
|
Rochester
|
New York
|
332,488 (1950)
|
210,565
|
36.7%
|
Baltimore
|
Maryland
|
949,708 (1950)
|
620,961
|
34.6%
|
Akron
|
Ohio
|
290,351 (1960)
|
199,110
|
34.5%
|
Syracuse
|
New York
|
220,583 (1950)
|
145,170
|
34.2%
|
Trenton
|
New Jersey
|
128,009 (1950)
|
84,913
|
33.7%
|
Hartford
|
Connecticut
|
177,397 (1950)
|
124,060
|
30.1%
|
Providence
|
Rhode Island
|
253,504 (1940)
|
178,042
|
29.6%
|
Hammond
|
Indiana
|
111,698 (1960)
|
80,830
|
27.6%
|
Albany
|
New York
|
134,995 (1950)
|
97,856
|
27.5%
|
Somerville
|
Massachusetts
|
103,908 (1930)
|
75,754
|
27.1%
|
Minneapolis
|
Minnesota
|
521,718 (1950)
|
382,578
|
26.7%
|
Erie
|
Pennsylvania
|
138,440 (1960)
|
101,786
|
26.5%
|
Philadelphia
|
Pennsylvania
|
2,071,605 (1950)
|
1,526,006
|
26.3%
|
Chicago
|
Illinois
|
3,620,962 (1950)
|
2,695,598
|
25.6%
|
Toledo
|
Ohio
|
383,818 (1970)
|
287,208
|
25.2%
|
Washington
|
District of Columbia
|
802,178 (1950)
|
601,723
|
25.0%
|
South Bend
|
Indiana
|
132,445 (1960)
|
101,168
|
23.6%
|
Boston
|
Massachusetts
|
801,444 (1950)
|
617,594
|
22.9%
|
Jersey City
|
New Jersey
|
316,715 (1930)
|
247,597
|
21.8%
|
New Haven
|
Connecticut
|
164,443 (1950)
|
129,779
|
21.1%
|
Reading
|
Pennsylvania
|
111,171 (1930)
|
88,082
|
20.8%
|
|