Biggest Cities of the Midwestern United States in 1800 with a Map

In 1800, the Old Northwest was a vast and rapidly changing frontier, shaped by settlers, traders, and native nations, yet still a relatively undeveloped region. Can you name the largest settlements of the Old Northwest of the United States in that year?
Click on the map to zoom in.
Quiz by
Dekkie
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Last updated: October 23, 2025
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First submittedOctober 23, 2025
Times taken127
Average score33.3%
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Population
Settlement
850
Cincinnati
731
Steubenville
719
Cahokia
714
Vincennes
561
Chillicothe
500
Detroit
Population
Settlement
474
Zanesville
467
Kaskaskia
321
Marietta
286
Bellefontaine
(Waterloo)
251
Michilimackinac
(Mackinac Island)
Population
Settlement
212
Prairie du Rocher
160
Gallipolis
125
La Ville de Maillet
(Peoria)
100
Clarksville
100
Grand Portage
Population
Settlement
65
Prairie du Chien
50
Green Bay
50
Youngstown
30
Dayton
30
Sault Ste. Marie
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3 Comments
+3
Level 55
Oct 23, 2025
For those curious about Missouri's town populations, which was still part of Spanish Louisiana at the time:

Ste. Genevieve - 950

St. Louis - 925

New Madrid - 800

Florissant - 300

Carondelet - 200

Cape Girardeau - 100

+1
Level 66
Oct 25, 2025
I have some ancestors from Kaskaskia, Illinois in the 1700s during the French era.
+1
Level 69
Nov 12, 2025
So if you had a big family and you and you three brothers with their wifes and children settled somewhere in the middle of nowhere, you would have made it on the list :D