Category:1800 establishments in the United States

• American companies established in 1800‎ (1 P)

K

• 1800 establishments in Kentucky‎ (17 P)

M

• 1800 establishments in Maryland‎ (5 P)
• 1800 establishments in Massachusetts‎ (8 P)
• 1800 establishments in Mississippi Territory‎ (1 P)

N

• 1800 establishments in New Jersey‎ (5 P)
• 1800 establishments in New York (state)‎ (16 P)
• 1800 establishments in North Carolina‎ (2 P)
• 1800 establishments in the Northwest Territory‎ (2 C, 5 P)

P

• 1800 establishments in Pennsylvania‎ (26 P)

R

• 1800 establishments in Rhode Island‎ (1 P)

S

• 1800 establishments in South Carolina‎ (8 P)

V

• 1800 establishments in Vermont‎ (3 P)
• 1800 establishments in Virginia‎ (8 P)

W

• 1800 establishments in Washington, D.C.‎ (3 P)

C

• Cumberland Road
• Cumberland Turnpike

I

• Indiana Territory

K

• Key West Police Department

P

• Portsmouth Naval Shipyard

R

• Reef Bay Sugar Factory Historic District
• Reynolds Property