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Observatory List: United States

Directory of astronomical observatories. Click on a state to search for observatories near you. Most observatory telescopes operate in the optical and infrared (IR) spectrum. Also see the list of radio astronomy observatories.

Some observatories may also have a science and technology center either onsite or nearby - for more information, see List of Science and Technology Centers..

Observatory List: Worldwide

Observatories in Space

Maine Vermont District Of Columbia New Hampshire Massachusetts Connecticut Rhode Island New York Pennsylvania New Jersey Delaware Maryland Virginia West Virginia Indiana Ohio North Carolina South Carolina Tennessee Alabama Georgia Florida Missouri Kentucky Mississippi North Dakota South Dakota Nebraska Kansas Oklahoma Minnesota Iowa Arkansas Louisiana Michigan Wisconsin Illinois Alaska Montana Wyoming Colorado New Mexico Texas Idaho Utah Arizona Nevada Hawaii Washington Oregon California U.S. Map - Choose a state