| AIC - Airport Commercial District |
| AIP - Airport Industrial Park District |
| C1 - Neighborhood Business C-1 District |
| C2 - Neighborhood Business C-2 District |
| C3 - General Business C-3 District |
| C4 - Highway Business C-4 District |
| CIP - Commercial Industrial Park District |
| IP - Industrial Park District |
| M - Medical District |
| M2 - Medical 2 District |
| O - Office District |
| PI - Planned Industry District |
| R2B - Residence 2-B District |
| RO2 - Residential Office District |
| RP - Research Park District |
| RPA - Research Park Applications District |
| RPA2 - Research Park Applications 2 District |
| RPC - Research Park Commercial District |
| RPW - Research Park West District |