District Compare
Side-by-side comparison of population, elections, flood monitoring, services, health, property, land, and air quality.
Atlas metrics include property, greenery change, and AQI when available.
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| Metric | Colombo | Gampaha |
|---|---|---|
| Population | 2,324,135 | 2,304,833 |
| Density | 3,325 /km² | 1,662 /km² |
| Area | 699 km² | 1,387 km² |
| Presidential 2024 | NPP (47.2%) | NPP (55.5%) |
| Parliamentary 2024 | NPP (14/18) | NPP (16/19) |
| Flood stations | 3 | 0 |
| Public services | 8 | 6 |
| Dengue cases (week) | 612 | 498 |
| Cost of living index | 100 | 67 |
| Property avg (median/perch) | LKR 9.5M/perch | LKR 4.2M/perch |
| Greenery Δ (2018→2024) | -6 | -8 |
| AQI | 78 | 65 |