These two municipalities may have similar populations, but this statement is not really fair. Evansville is the only major population center for anyone within a ~75-100 miles from it in most directions. It is absolutely a rural "city"; businesses in Evansville have a significant number of their employees commuting from ~500-5000 person towns in Southern Illinois, Western Kentucky, and Southwestern Indiana.
It is significantly more rural than Santa Barbara and I can't imagine comparing the two locations unless you have never visited the American Midwest.
Okay, I did exaggerate a bit, but it's not that unfair. Ventura is only 30 miles away to the East (or South if you are asking for directions), which is a lot less remote than Evansville, but going up the coast the other way, Santa Maria is pretty far away.
It's arguably an unfair comparison because everything to the south of Santa Barbara is ocean, and there's mountains/national forest to the north, both of which are arguably different from what people think when you say "rural" (demographics notwithstanding).
I'll cop to having never lived in SW Indiana and while I did live in Indiana, I rarely made it past Holiday World to the south-west. There is probably also some bias, because Evansville is a rather large city for Indiana (3rd most populous), but Santa Barbara isn't so much for California.
I will also admit that my girlfriend at the time I relocated wouldn't move to Santa Barbara because there were too many people (she also felt that way about Fort Wayne; not sure if she had any thoughts about Evansville).