 Exxon-Mobil is still one of the major employers in the city and now runs over 10 plants in the area including a newly announced 2 billion dollar expansion to its chemical facilities in 2019.Following the discovery of oil nearby, the population of Baytown and the Tri-Cities boomed.Many immigrants arrived in Baytown, among them a number of Jewish families who founded a synagogue, K’nesseth Israel, in 1930.