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is a census-designated place (CDP) in Galveston County, Texas, United States. The population was 4,365 at the 2000 census.
In April 1985 residents of San Leon, Bacliff, and Bayview considered an incorporation proposal to become the City of Bayshore. Judge Ray Holbrook signed an order for the election to take place on April 6, 1985, freeing the area, which had a population of 11,000, from the extraterritorial jurisdiction of League City and Texas City. Residents rejected the incorporation proposal. The vote was tallied with 1,268 against and 399 in favor. Proponents wanted a local police force and the ability to pass ordinances. Opponents said that the tax base was too small to support municipal services including police and road and drainage improvements.
On April 23, 1991 the community, and other areas of Galveston County, received an enhanced 9-1-1 system which routes calls to proper dispatchers and allows dispatchers to automatically view the address of the caller. On September 13 2008, San Leon, TX received extensive damage from Hurricane Ike.