This system can be divided into two parts: the central nervous system and the peripheral nervous system. 1  Let's take a look at the peripheral nervous system. 2  This system is also called the involuntary nervous system. The autonomic nervous system can further be divided into the parasympathetic and sympathetic divisions.
Population of Hillsborough County. Last official estimated population of Hillsborough County was 1,234,145 (year 2014)[1]. This was 0.387% of total US population and 6.1% of total Florida state population. Area of Hillsborough County is 1,265.7 miÂ² (=3278.2 kmÂ²), in this year population density was 975.06 p/miÂ².
Most Densely Populated County in Florida. There are 3,347 people per square mile in Pinellas County. The next closest county with a highly concentrated population is Broward with 1,445 people per square mile. 280 Square Miles, 24 Municipalities. Clearwater is the County Seat, St. Petersburg is the largest city with a population of 244,769, and Tarpon Springs was the first incorporated city in 1887. Pinellas is Florida's second smallest county in land mass, larger only than Union County.