Onion Creek, a neighborhood in Austin, Texas, has undergone significant demographic changes from 2013 to 2022. The community transitioned from a White Majority to a Moderately Diverse area. In 2013, the White population constituted 58% of the neighborhood, decreasing to 43% by 2022. Concurrently, the Hispanic population increased from 34% to 41%. The emergence of a multiracial identity was evident, with the "Two or More Races" category rising from 0% to 8% during this period.

The neighborhood experienced substantial population growth, nearly doubling from 3,501 in 2013 to 6,545 in 2022. Despite these demographic shifts, Onion Creek maintained its upper-middle-class status. The median income showed an overall upward trend, increasing from $93,125 in 2013 to $98,355 in 2022, with some fluctuations in between.

Onion Creek's demographic evolution aligns with broader trends observed in many American suburbs, particularly those near growing, diverse cities like Austin. The increase in the Hispanic population mirrors Texas's overall demographic changes. The maintenance of high median incomes despite increased diversity challenges some national trends where increased diversity has sometimes corresponded with income decreases.