Union Institute & University Share: Schools - Colleges and Universities Union Institute & University Visit Website 160 Promenade Circle Ste 115 Sacramento, CA 95834 (916) 564-3100 (800) 486-7049 (916) 564-3131 (fax) Facebook Twitter YouTube Instagram About Map About A non-profit, accredited, private university spanning from Vermont to Florida and California, Union Institute & University serves motivated adults who seek transformative education and degrees that ma What's Nearby? Distance: 5 10 15 20 25 50 mi.