Infrastructure and Planning Data Road Mileage, 1990: 4469 Unpaved Road Mileage, 1990: .9% Registered Vehicles, 1990: 89 per mile of paved road Public Transportation Use: 1.1% of commuters Private Vehicle Use: 91% of commuters Private Vehicles - Single Occupant: 78% of commuters Average Travel Time to Work: 20.7 minutes Growth of Population, 1990-2000: 35% Growth of Population 0-24 Years Old: 26% Growth of Population 65 Years and Older: 42% Projected Enrollment Change 1990-2000 Elementary (K-5): 8588 Projected Change 1990-2000 Middle School (6-8): 6615 Projected Change 1990-2000 High School (9-12): 6037 Republican Registration, 1990: 53.77% Democratic Registration, 1990: 38.65% Change in Republican Registration, 1980-1990: 76% Change in Democratic Registration, 1980-1990: 6%