West Allis, Wisconsin, a city with approximately 59,951 residents as of 2022, is classified as a White Majority community. The city's population comprises 71% white residents, indicating a clear racial majority. However, the demographic composition has undergone changes over the past decade, showing indications of increasing diversity and a potential transition towards a more mixed community structure.

Over the past decade, West Allis has experienced a gradual but consistent shift in its racial demographics. In 2013, the city was classified as having Low Diversity, with 80% of the population identifying as white. By 2022, this percentage had decreased to 71%, indicating a transition towards Moderate Diversity. The Hispanic population has shown the most significant growth, increasing from 11% in 2013 to 15% in 2022. This trend, coupled with modest increases in other racial groups, suggests that West Allis is becoming a Transitional Community. The percentage of residents identifying as two or more races has doubled from 2% to 4%, further supporting this categorization.

Alongside these demographic changes, West Allis has experienced a general upward trend in median income. From 2013 to 2021, the median income increased from $47,318 to $58,477, representing a 23.6% growth. However, there was a decrease in 2022 to $55,201, which could be related to broader economic factors or demographic shifts. The population has remained relatively stable over the decade, with minor fluctuations, suggesting that the demographic changes are more likely due to natural population changes and in-migration rather than significant overall population growth or decline.