| ADCO - Unincorporated Adams County |
| AG - Agricultural District |
| C-1 - Local Commercial District |
| C-2 - General Commercial District |
| C-3 - Regional Commercial District |
| I-1 - Light Intensity Industrial District |
| I-1S - Industrial Park Storage District |
| I-2 - Medium Intensity Industrial District |
| I-3 - Heavy Intensity Industrial District |
| MHP - Mobile Home Park District |
| MU-1 - Mixed Use District |
| PUBLIC - Public District |
| PUD - Planned Unit Development District |
| R-1 - Single-Family Detached Residential District |
| R-2 - Single-Family Attached Residential District |
| R-3 - Multi-Family Residential District |
| R-4 - Townhouse Residential District |
| RMA - Rocky Mountain Arsenal |
|
| ROW - Right-of-Way District |
| RU - Residential Unit District |
| THOR - City of Thorton |
|
| UNK - Unknown |