| Most to Oak Harbor (Washington) | 5,134.65 mi (8,263.41 km) |
| Most to Oak Hills (Oregon) | 5,308.83 mi (8,543.74 km) |
| Most to Oak Lawn (Illinois) | 4,503.75 mi (7,248.09 km) |
| Most to Oak Park (California) | 5,906.27 mi (9,505.22 km) |
| Most to Oak Park (Illinois) | 4,496.37 mi (7,236.21 km) |
| Most to Oak Park (Michigan) | 4,302.62 mi (6,924.39 km) |
| Most to Oak Ridge (Florida) | 4,934.64 mi (7,941.53 km) |
| Most to Oak Ridge (New Jersey) | 4,043.31 mi (6,507.08 km) |
| Most to Oak Ridge (Tennessee) | 4,666.09 mi (7,509.35 km) |
| Most to Oakdale (California) | 5,741.34 mi (9,239.79 km) |
| Most to Oakdale (Minnesota) | 4,515.54 mi (7,267.06 km) |
| Most to Oakland (California) | 5,773.35 mi (9,291.31 km) |
| Most to Oakland (New Jersey) | 4,033.40 mi (6,491.12 km) |
| Most to Oakland Park (Florida) | 5,000.98 mi (8,048.30 km) |
| Most to Oakleaf Plantation (Florida) | 4,864.48 mi (7,828.63 km) |
