Is “acting Like You Have More Than You Really Do” Common Everywhere?

I live in a small town, with approximately 25 families making up the top income earnings (just a guess) of over $100,000 per year. The majority of residents make around $20,000 (according to census info).
There is an overabundance of people who drive big SUV’s, try to dress like celebrities, wear fake handbags, and generally act like they have money. Some of these women (the ones I know of, personally) live in modular homes, or very small homes and they either don’t work, or their husband sells insurance or some other job like that. The families who make over $100k per year are much more subtle. I, for example fall into this criteria. I drive a luxury car, but it’s not flashy (and it’s a car), I carry an expensive handbag, but it doesn’t have a logo, etc… I just want to know why all the women in my town have to act like they have money (or a higher income) when I know they dont? Why do they act like this when you can’t fake a mortgage payment? Is this everywhere, or just rural?