The first Jewish man in the city was from Louisiana, others migrated from the South, and were joined by immigrants.They worked as merchants and in a variety of jobs in the growing city and ranching area. Oil was discovered at nearby Spindletop on 10 January 1901.In addition, Broussard founded a company to operate an irrigation system to support rice culture.(It became a public institution, the Lower Neches Irrigation Authority.) This helped stimulate the expansion of rice cultivation from 1500 acres in 1892 to 400,000 acres in 23 counties by his death in 1956.In the postwar years, Beaumont's port continued in importance.As was typical with other cities, post-war highway construction led to the development of new suburbs and dispersal of the population in search of new housing.
Over the years, several corporations have been based in this city, including Gulf States Utilities which had its headquarters in Beaumont until its takeover by Entergy Corporation in 1993.
Soon after that, a small community grew up around the farm, which was named Tevis Bluff or Neches River Settlement. Later, other businesses were formed, especially in railroad construction and operation, new building construction, lumber sales, and communications.
This town was named Beaumont, after Jefferson Beaumont, the brother-in-law of Henry Millard. The Port of Beaumont became a successful regional shipping center.
When the city became a major center for defense shipbuilding during World War II, tens of thousands of rural Texans migrated there for the new high-paying jobs.
The Roosevelt administration ordered the defense industry to be integrated, and many Southern whites were working closely with blacks for the first time.