District Population of Sri Lanka

Project Overview

This project presents a district-level population distribution map of Sri Lanka based on the National Population and Housing Census conducted in 2012. The thematic map visualises spatial variations in population size across districts to support demographic analysis, regional planning, and policy decision-making.

Study Area

The study area covers the entire island of Sri Lanka at the administrative district level. Sri Lanka consists of 25 districts with varying population concentrations influenced by urbanisation, economic activities, infrastructure development, and physical geography.

Data Sources

District boundary shapefile – Survey Department of Sri Lanka
Population Census data (2012) – Department of Census and Statistics, Sri Lanka

Methodology

Preparation and cleaning of district-level population data
Attribute table joining of census data with district boundaries
Classification of population values into meaningful ranges
Choropleth mapping using graduated colour symbology
Map layout design including legend, scale bar, and north arrow

District Population Map – 2012

The map illustrates population distribution across Sri Lankan districts, with higher population concentrations observed in Colombo, Gampaha, and Kurunegala districts, while lower population levels are evident in districts such as Mullaitivu, Mannar, and Moneragala.

Population Classes

98,000 – 194,000
194,001 – 676,000
676,001 – 954,000
954,001 – 1,743,000
1,743,001 – 2,480,000

Key Observations

Western Province districts show the highest population concentration
Urbanised districts exhibit significantly higher population values
Northern and eastern districts show comparatively lower population levels
Population distribution reflects patterns of economic development and infrastructure

Tools & Skills

ArcGIS Desktop (ArcMap)
Socioeconomic thematic mapping
Choropleth classification techniques
Cartographic layout design

Conclusion

This project strengthened skills in population data handling, thematic mapping, and cartographic visualisation. The district-level population map provides valuable insights for urban planning, regional development, and demographic studies in Sri Lanka.

District Population of Sri Lanka – 2012