Old Ocean is an unincorporated community in Brazoria County, Texas, United States. According to the Handbook of Texas, the community had a population of 915 in 2000. It is located within the Greater Houston metropolitan area. Geography Old Ocean is located at the intersection of Farm to Market Road 524 and Texas State Highway 35, northwest of Sweeny. It is also located west of West Columbia and west of Angleton. Demographics As of the census of 2000, there were 150 people in the community. History Old Ocean was originally known as Chance's Prairie, after the land grant made to Joseph H. Polley and Samuel Chance on July 27, 1824. William B. Sweeny, one of the founders of Chance's Prairie and for which the local town of Sweeny was named, bought from Polley and Chance for $1,950. He had arrived in the county in 1832. His family and their 250 slaves arrived here and settled on a league of land donated by Charles Breen, on the southern boundary of this grant. John Sweeny, Sr.'s six children eventually owned more local plantations after he died in 1854. Eventually, more people settled here, and the town reportedly had a population of 18 in 1880. James Abercrombie discovered oil nearby in 1934, and a government oil refinery was constructed to make high-octane gas. It was closed near the end of World War II. The oilfield was called Old Ocean, and by 1936 the town eventually took that name. A post office with the name Old Ocean was established in 1945 and was located inside a commissary on Sweeny's plantation. The 1936 county highway map showed Bethlehem church, several other buildings, and several scattered houses in the area. Its population was 800 in 1945 and had four businesses two years later. Its population grew to over a thousand residents and had nine businesses in 1964, losing 100 residents and only one business in 1972. Its population was recorded as 915 from the 1970s through 2000. It had two churches in 1974. Its business directory included 19 businesses in 1982, eight a decade later, and 21 in 2000. Some settlers of the community included Mills M. Battle, M. Berry, Thomas H. Borden, Charles Breen, Benjamin C. Franklin, Freeman George, Henry W. Johnson, Oliver Jones, Imla Keep, David McCormick, Zeno Philips, Thomas Walker, John Williams, and Robert Harris Williams. Before the American Civil War, Sampson Brown was