USA spaceports

Private commercial

Spaceport America New Mexico

SpaceX - Boca Chica Beach, Texas.

Blue Origin - West Texas Launch Site

Quasi Private

Alaska Aerospace Corporation (Launch site only company) on Kodiak Island, Alaska

Wallops Flight Facility(NASA) - Wallops Island spaceport(Orbital ATK)

National (Goverment)

NASA Florida - Kennedy Space Center (KSC)

California - Edwards Air Base

Vandenberg Air Force Base - California, Just North of LA.

Not fully functional

San Nicolas Island, just of the coast from Los angeles is a U.S. Navy facility used for missile testing, being considered by DARPA for a fully functional Space Port.

Omelek Island operational between 2006 and 2009 for SpaceX Falcon 1 (speculatively for BFS testing)