State
|
Peak Population
|
Year
|
2020 Population
|
Decline
|
City
|
Illinois
|
3,620,962
|
1950
|
2,746,388
|
-24.2%
|
Chicago
|
Pennsylvania
|
2,071,605
|
1950
|
1,603,797
|
-22.6%
|
Philadelphia
|
Michigan
|
1,849,568
|
1950
|
639,111
|
-65.4%
|
Detroit
|
Maryland
|
949,708
|
1950
|
585,708
|
-38.3%
|
Baltimore
|
Ohio
|
914,808
|
1950
|
372,624
|
-59.3%
|
Cleveland
|
Missouri
|
856,796
|
1950
|
301,578
|
-64.8%
|
St. Louis
|
-
|
802,178
|
1950
|
689,545
|
-14.0%
|
Washington
|
Massachusetts
|
801,444
|
1950
|
675,647
|
-15.7%
|
Boston
|
Wisconsin
|
741,324
|
1960
|
577,222
|
-22.1%
|
Milwaukee
|
Pennsylvania
|
676,806
|
1950
|
302,971
|
-55.2%
|
Pittsburgh
|
Tennessee
|
650,100
|
2000
|
633,104
|
-2.6%
|
Memphis
|
Louisiana
|
627,525
|
1960
|
383,997
|
-38.8%
|
New Orleans
|
New York
|
580,132
|
1950
|
278,349
|
-52.0%
|
Buffalo
|
Minnesota
|
521,718
|
1950
|
429,954
|
-17.6%
|
Minneapolis
|
Ohio
|
503,998
|
1950
|
309,317
|
-38.6%
|
Cincinnati
|
New Jersey
|
442,337
|
1930
|
311,549
|
-29.6%
|
Newark
|
Ohio
|
383,818
|
1970
|
270,871
|
-29.4%
|
Toledo
|
Hawaii
|
371,657
|
2000
|
350,964
|
-5.6%
|
Honolulu
|
Alabama
|
340,887
|
1960
|
200,733
|
-41.1%
|
Birmingham
|
California
|
337,977
|
2000
|
310,227
|
-8.2%
|
Santa Ana
|
New York
|
332,488
|
1950
|
211,328
|
-36.4%
|
Rochester
|
New Jersey
|
316,715
|
1930
|
292,449
|
-7.7%
|
Jersey City
|
Minnesota
|
313,411
|
1960
|
311,527
|
-0.6%
|
Saint Paul
|
Virginia
|
307,951
|
1970
|
238,005
|
-22.7%
|
Norfolk
|
Alaska
|
291,826
|
2010
|
291,246
|
-0.2%
|
Anchorage
|
Ohio
|
290,351
|
1960
|
190,469
|
-34.4%
|
Akron
|
Ohio
|
262,332
|
1960
|
137,644
|
-47.5%
|
Dayton
|
Rhode Island
|
253,504
|
1940
|
190,934
|
-24.7%
|
Providence
|
Virginia
|
249,621
|
1970
|
226,610
|
-9.2%
|
Richmond
|
Louisiana
|
229,493
|
2010
|
227,470
|
-0.9%
|
Baton Rouge
|
Florida
|
226,419
|
2000
|
223,109
|
-1.5%
|
Hialeah
|
New York
|
220,583
|
1950
|
148,620
|
-32.6%
|
Syracuse
|
Louisiana
|
206,989
|
1980
|
187,593
|
-9.4%
|
Shreveport
|
Alabama
|
205,764
|
2010
|
200,603
|
-2.5%
|
Montgomery
|
Mississippi
|
202,895
|
1980
|
153,701
|
-24.2%
|
Jackson
|
Alabama
|
202,779
|
1960
|
187,041
|
-7.8%
|
Mobile
|
Illinois
|
197,899
|
2010
|
180,542
|
-8.8%
|
Aurora
|
Michigan
|
196,940
|
1960
|
81,252
|
-58.7%
|
Flint
|
Michigan
|
179,260
|
1970
|
139,387
|
-22.2%
|
Warren
|
Indiana
|
178,320
|
1960
|
69,093
|
-61.3%
|
Gary
|
Connecticut
|
177,397
|
1950
|
121,054
|
-31.8%
|
Hartford
|
Massachusetts
|
174,463
|
1960
|
155,929
|
-10.6%
|
Springfield
|
Ohio
|
170,002
|
1930
|
60,068
|
-64.7%
|
Youngstown
|
Kansas
|
168,213
|
1970
|
156,607
|
-6.9%
|
Kansas City
|
Connecticut
|
164,443
|
1950
|
134,023
|
-18.5%
|
New Haven
|
Connecticut
|
158,709
|
1950
|
148,654
|
-6.3%
|
Bridgeport
|
Illinois
|
152,871
|
2010
|
148,655
|
-2.8%
|
Rockford
|
Georgia
|
149,245
|
1960
|
147,780
|
-1.0%
|
Savannah
|
Virginia
|
146,437
|
2000
|
137,148
|
-6.3%
|
Hampton
|
Pennsylvania
|
143,433
|
1930
|
76,328
|
-46.8%
|
Scranton
|
Indiana
|
141,543
|
1960
|
117,298
|
-17.1%
|
Evansville
|
Pennsylvania
|
138,440
|
1960
|
94,831
|
-31.5%
|
Erie
|
New York
|
134,995
|
1950
|
99,224
|
-26.5%
|
Albany
|
Indiana
|
132,445
|
1960
|
103,453
|
-21.9%
|
South Bend
|
Michigan
|
131,403
|
1970
|
112,644
|
-14.3%
|
Lansing
|
New Jersey
|
128,009
|
1950
|
90,871
|
-29.0%
|
Trenton
|
Kansas
|
127,473
|
2010
|
126,587
|
-0.7%
|
Topeka
|
Illinois
|
126,963
|
1970
|
113,150
|
-10.9%
|
Peoria
|
Florida
|
124,656
|
2000
|
111,640
|
-10.4%
|
Miami Gardens
|
New Jersey
|
124,555
|
1950
|
71,791
|
-42.4%
|
Camden
|
Massachusetts
|
121,217
|
1920
|
101,079
|
-16.6%
|
New Bedford
|
Massachusetts
|
120,740
|
1950
|
118,403
|
-1.9%
|
Cambridge
|
Massachusetts
|
120,485
|
1920
|
94,000
|
-22.0%
|
Fall River
|
Texas
|
119,175
|
1960
|
115,282
|
-3.3%
|
Beaumont
|
Ohio
|
116,912
|
1950
|
70,872
|
-39.4%
|
Canton
|
Illinois
|
116,250
|
2010
|
114,394
|
-1.6%
|
Springfield
|
California
|
115,965
|
2000
|
109,554
|
-5.5%
|
El Monte
|
Virginia
|
114,773
|
1960
|
97,915
|
-14.7%
|
Portsmouth
|
California
|
112,580
|
2000
|
107,762
|
-4.3%
|
Inglewood
|
Delaware
|
112,504
|
1940
|
70,898
|
-40.0%
|
Wilmington
|
Michigan
|
112,007
|
1960
|
109,976
|
-1.8%
|
Dearborn
|
Indiana
|
111,698
|
1960
|
77,879
|
-30.3%
|
Hammond
|
Pennsylvania
|
111,171
|
1930
|
95,112
|
-14.4%
|
Reading
|
Michigan
|
110,109
|
1970
|
95,535
|
-13.2%
|
Livonia
|
Minnesota
|
107,312
|
1960
|
86,697
|
-19.2%
|
Duluth
|
California
|
105,549
|
2010
|
102,773
|
-2.6%
|
Norwalk
|
Texas
|
104,553
|
2010
|
102,316
|
-2.1%
|
Wichita Falls
|
Massachusetts
|
103,908
|
1930
|
81,045
|
-22.0%
|
Somerville
|
Iowa
|
103,264
|
1980
|
101,724
|
-1.5%
|
Davenport
|
Missouri
|
102,979
|
1900
|
72,473
|
-29.6%
|
St. Joseph
|
New York
|
102,394
|
1960
|
48,671
|
-52.5%
|
Niagara Falls
|
Massachusetts
|
102,320
|
1930
|
101,253
|
-1.0%
|
Lynn
|
New York
|
101,740
|
1930
|
65,283
|
-35.8%
|
Utica
|
Virginia
|
100,220
|
1980
|
100,011
|
-0.2%
|
Roanoke
|
Ohio
|
100,216
|
1970
|
81,146
|
-19.0%
|
Parma
|
|