[jospehm20]

I just looked on Wikipedia. Demographics in my town are about the same as they were 20 years ago.

[MacNaughton]

On a microscopic level there are many instances such as yours. On the macro level …

1960 U.S. Census ~87% of the population was white.>br> 2010 U.S. Census =62% was white.

Naturally, the major urban/suburban zones are where the highest concentrations of non-whites are living.