Editing Rock Hill, South Carolina (section)

===20th century to present===
Rock Hill experienced steady growth in the twentieth century. The city boundary expanded far beyond its original limits. Four [[Unincorporated area|unincorporated communities]] of York County were annexed into the city including [[Boyd Hill, South Carolina|Boyd Hill]] in the late 1940s, [[Ebenezer, South Carolina|Ebenezer]] and Mexico in the 1960s, and [[Oakdale, South Carolina|Oakdale]] in the 1980s.

Rock Hill celebrated its [[centennial]] in 1952 and its [[sesquicentennial]] in 2002.

Rock Hill hosted the 2017 UCI BMX World Championships at the Rock Hill BMX Supercross Track in Riverwalk with an estimated direct economic impact of $19.2 million.<ref>{{Cite news |last=Thackham |first=David |date=2017-08-16 |title=How much money did the BMX championships bring to Rock Hill? |url=https://www.heraldonline.com/news/local/article167279927.html |access-date=2017-11-06 |website=The Herald |language=en}}</ref>

On April 7, 2021, former [[National Football League|NFL]] player [[Phillip Adams (American football)|Phillip Adams]] [[2021 Rock Hill shooting|shot and killed]] six people, including two children, at a house in Rock Hill. He committed suicide the next day.<ref>{{cite news|first=Timothy|last=Bella|title=Six dead in S.C. shooting committed by ex-NFL player Phillip Adams, who then killed himself, authorities say|date=April 8, 2021|newspaper=The Washington Post|url=https://www.washingtonpost.com/nation/2021/04/08/south-carolina-shooting-rock-hill/|access-date=April 9, 2021}}</ref>