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Biggest Trans-Mississippi U.S. Cities after the Mexican-American War

With the help of a map, can you name the 100 most populous cities in the historical Trans-Mississippi area in 1850, shortly after the end of the Mexican-American War?
Population estimates according to the US Census of 1850 (incomplete). Other sources listed in this Pastebin.
Orange territories indicate land and claims ceded by Mexico.
Some of these cities no longer exist.
Quiz by
Dekkie
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Last updated: May 31, 2025
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First submittedMay 31, 2025
Times taken141
Average score28.0%
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Pop.
State or
Territory
City
77,860
MO
St. Louis
21,000
CA
San Francisco
6,820
CA
Sacramento
5,807
UT
Salt Lake City
5,623
CA
Placerville
4,846
NM
Santa Fe
4,177
TX
Galveston
4,082
IA
Burlington
4,000
CA
Sonora
3,500
CA
San Jose
3,488
TX
San Antonio
3,460
MO
St. Joseph
3,108
IA
Dubuque
3,000
CA
Columbia
2,698
MO
Lexington
2,683
CA
Nevada City
2,540
IA
Muscatine
2,529
MO
Kansas City
2,478
IA
Keokuk
2,396
TX
Houston
2,326
MO
Boonville
2,301
MO
Jefferson City
2,196
NM
La Cuesta
2,167
AR
Little Rock
2,020
MO
Hannibal
2,008
NM
San Miguel del Vado
2,000
TX
Brownsville
2,000
IA
Kanesville
2,000
CA
Marysville
2,000
CA
Mokelumne
2,000
CA
Stockton
1,915
MO
Weston
1,848
IA
Davenport
1,728
LA
Shreveport
Pop.
State or
Territory
City
1,610
CA
Los Angeles
1,600
TX
Harrisburg
1,600
CA
Murphys Old Diggings
1,550
NM
Las Vegas
1,509
IA
Fort Madison
1,500
NM
Albuquerque
1,500
CA
Santa Barbara
1,498
MO
St. Charles
1,447
MO
Independence
1,343
CA
Downieville
1,320
NM
Tecolote
1,302
CA
Auburn
1,298
TX
New Braunfels
1,294
NM
Zuni
1,265
MO
Palmyra
1,261
LA
Natchitoches
1,250
IA
Iowa City
1,242
LA
Thibodaux
1,201
MO
Carondelet
1,189
TX
Marshall
1,186
UT
Ogden
1,176
LA
Barataria
1,176
UT
Provo
1,092
CA
Monterey
1,024
TX
Tyler
1,000
CA
Carson Hill
1,000
CA
Chinese Diggings
1,000
LA
Donaldsonville
1,000
MO
Glasgow
1,000
CA
Melones
1,000
CA
San Andreas
964
AR
Fort Smith
943
MO
Hermann
Pop.
State or
Territory
City
912
MO
Louisiana
909
IA
Fairfield
894
AR
Camden
891
LA
Franklin
848
AR
Batesville
827
MO
Liberty
821
OR
Portland
806
TX
Victoria
800
MO
Fulton
790
NM
Jemez
758
IA
Mount Pleasant
754
TX
Fredericksburg
750
TX
Huntsville
750
TX
Jefferson
750
TX
Matagorda
750
TX
Washington
748
NM
Laguna
734
UT
Bountiful
718
MO
Ste. Genevieve
717
LA
Gretna
705
IA
Keosauqua
700
TX
Bastrop
700
MO
Chillicothe
700
TX
Clarksville
697
OR
Oregon City
688
NM
Mesilla
672
LA
Alexandria
672
CA
Rough and Ready
654
MO
Savannah
652
LA
St. Martinsville
651
MO
Columbia
637
MN
Pembina
629
TX
Austin
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3 Comments
+1
Level 62
May 31, 2025
Oregon being that big is absolutely terrifying
+2
Level 56
May 31, 2025
It purportedly used to extend even higher up to the 54th parallel north, being jointly controlled by the U.S. and the British at the time as Oregon Country or the Columbia District until 1846.
+1
Level 62
May 31, 2025
Also the amount of unorganized territory is quite big. It is like America's Junk Drawer