text: Demographics Kennecott first reported on the 1920 U.S. Census as an unincorporated village. It appeared again in 1930 and 1940, and after its abandonment, it has not reported separately since. It is now within the McCarthy CDP.
  Geology
  Copper ore was discovered in a lode on Chief Nikolai's house at the mouth of Dan Creek in July 1899.  The geological formations in the area were described and identified by a USGS geologist by the name of Oscar Rohn in 1899.  This original copper find became the basis of the Nikolai Mine in 1900.  Simultaneously, placer gold was discovered on the Dan and Young Creeks.  The Bonanza ore body was discovered in Aug. 1900 by Warner and Smith.  Almost simultaneously, another USGS geologist named Arthur Spencer, came across the ore when mapping the area with Frank Schrader.  In 1901, the Dan Creek was staked by C.L. Warner and "Dan" L. Kain.  Gold was found on Chititu Creek in April 1902 by Frank Kernan and Charles Koppus.
  Besides placer deposits, copper is found as polymetallic replacement deposits in the fault planes, fractures and joints of the Triassic Nikolai greenstone, which consists of basaltic lava flows, and in the base of the Upper Triassic Chitistone limestone.  Minerals include chalcocite, bornite and chalcopyrite, with associated malachite, azurite and cuprite.  Native copper can also be found in the greenstone.