 The per capita income for the county was $20,423, and 10.20% of the population and 7.10% of families were below the poverty line.Of the total population, 13.40% of those under the age of 18 and 9.90% of those 65 and older were living below the poverty line.Gillespie County is something of an aberration in that it is a historically Republican county in a state that was overwhelmingly Democratic up until recent decades.