Category:1800 in the United States

• 1800 in the United States by city‎ (1 C)
• 1800 in the United States by state or territory‎ (18 C)

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• 1800 disestablishments in the United States‎ (1 C, 2 P)
• 1800 establishments in the United States‎ (15 C, 7 P)

L

• 1800 in American law‎ (3 C, 3 P)

P

• 1800 in American politics‎ (3 C, 2 P)

Q

• Quasi-War‎ (3 C, 12 P)

• 1800 in the United States

A

• Adams and Liberty

C

• 1800 United States census
• Convention of 1800

I

• Invasion of Curaçao (1800)

L

• Largest cities in the United States in 1800 by population

P

• Battle of Puerto Plata Harbor

Q

• Quasi-War

R

• Revival of 1800

T

• Third Treaty of San Ildefonso

U

• USS Boston vs Berceau
• USS Constellation vs La Vengeance
• USS Enterprise vs Flambeau