Sycuan Band of the Kumeyaay Nation Tags: Ethnic Group.The Sycuan Band of the Kumeyaay Nation is a federally recognized tribe of Mission Indians from Southern California near the El Cajon. The Sycuan band are a Kumeyaay tribe one of the four ethnic groups indigenous to San Diego County. point language English language, Tiipai language population place United States related Cocopah, Quechan, Kumeyaay people, Kiliwa people, Paipai people religion Catholic Church total population 120 latitude 32.7825 longitude -116.833 Learn more... Loading...