Philippine Cities and Municipalities are classed into various classifications according to their income, averaged over the previous three years.
Provinces
| Class | Average Annual Income |
| First | P 450 M or more |
| Second | P 360 M or more but less than P 450 M |
| Third | P 270 M or more but less than P 360 M |
| Fourth | P 180 M or more but less than P 270 M |
| Fifth | P 90 M or more but less than P 180 M |
| Sixth | Below P 90 M |
Cities
| Class | Average Annual Income |
| First | P 400 M or more |
| Second | P 320 M or more but less than P 400 M |
| Third | P 240 M or more but less than P 320 M |
| Fourth | P 160 M or more but less than P 240 M |
| Fifth | P 80 M or more but less than P 160 M |
| Sixth | Below P 80 M |
Municipalities
| Class | Average Annual Income |
| First | P 55 M or more |
| Second | P 45 M or more but less than P 55 M |
| Third | P 35 M or more but less than P 45 M |
| Fourth | P 25 M or more but less than P 35 M |
| Fifth | P 15 M or more but less than P 25 M |
| Sixth | Below P 15 M |
Source:
Each Municipality is divided into a number of Barangays.
Each Barangay is divided into a number of Sitio’s.
Sitio’s may be further divided into Puroks.
There are 17 administrative regions of the Philippines.
8 of these are in Luzon.
3 are in Visayas.
6 are in Mindanao.
The Luzon regions are:
National Capital Region (NCR)
Cordillera Administrative Region (CAR)
Ilocos Region (Region I)
Cagayan Valley (Region II)
Central Luzon (Region III)
CALABARZON (Region IV-A)
MIMAROPA (Region IV-B)
Bicol Region (Region V)
The Visayas regions are:
Western Visayas (Region VI)
Central Visayas (Region VII)
Eastern Visayas (Region VIII)
The Mindanao regions are:
Zamboanga Peninsula (Region IX)
Northern Mindanao (Region X)
Davao Region (Region XI)
SOCCSKSARGEN (Region XII)
Caraga (Region XIII)
Autonomous Region in Muslim Mindanao (ARMM)