Localities in the Dallas area charge 2-3% of the market value of the property[1]. KC charges ~%0.3 of the market value (1.59% of the "assessed value" which is defined as 19% of the market value for residential properties)[2]. So, yeah, the property taxes are much higher in Dallas.

[1] http://www.davedowns.com/dallas-property-tax.htm [2] http://kcmo.gov/finance/property-taxes-2/