New 8,403 SF and 4,413 SF Retail Building Coming 2019. Baytown has seen the recent growth in the energy industry and is home to some of the largest refineries in the world, including ExxonMobil’s 560,000 barrel-a-day Baytown plant. ExxonMobil is the largest employer with 3,785 employees followed by Goose Creek Consolidated ISD with 3,012 employees, San Jacinto Methodist Hospital with 1,687 employees, and Bayer Inc. with 1,100. Baytown is home to an estimated 77,181 people with employment at 92.2% and an average household income of $74,470. The population is projected to grow to 83,319 by 2023.