Infrastructure and Planning Data Road Mileage, 1990: 1617 Unpaved Road Mileage, 1990: 29% Registered Vehicles, 1990: 266 per mile of paved road Public Transportation Use: .4% of commuters Private Vehicle Use: 92% of commuters Private Vehicles - Single Occupant: 70% of commuters Average Travel Time to Work: 22.1 minutes Growth of Population, 1990-2000: 29% Growth of Population 0-24 Years Old: 22% Growth of Population 65 Years and Older: 28% Projected Enrollment Change 1990-2000 Elementary (K-5): 7367 Projected Change 1990-2000 Middle School (6-8): 5511 Projected Change 1990-2000 High School (9-12): 3478 Republican Registration, 1990: 43.84% Democratic Registration, 1990: 48.50% Change in Republican Registration, 1980-1990: 66% Change in Democratic Registration, 1980-1990: 23%