Guam Population Grid for 2020 at 100-Meter Resolution

A 100-meter resolution raster grid estimates Guam's 2020 population using Facebook's settlement footprint and 2011 census data. Population counts from the 2011 census were proportionally allocated to the settlement areas and updated using a 1.64% annual growth rate. The Pacific Community produced this dataset, which was last updated in June 2026.

Use Cases

• Model population exposure to natural hazards based on the high-resolution settlement footprint.
• Plan infrastructure and service allocation based on the 100-meter population density grid.
• Update demographic models for Guam using the 2020 population estimates derived from census data.
• Analyze urban sprawl and settlement patterns using the rasterized human settlement data.

Strengths

• Uses a high-resolution human settlement footprint from Facebook's population density maps.
• Applies a documented 1.64% annual population growth rate to update estimates to 2020.
• Provides data at a consistent 100-meter raster resolution for spatial analysis.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Population estimates are derived from 2011 census data, which may not reflect more recent demographic shifts.
• The dataset's row count is unknown, which may limit suitability assessment for large-scale modeling.

Provenance

Source

Pacific Community

Collection Method

Population allocated proportionally using 2011 census counts at district level to a settlement footprint, then updated with a growth rate.

Time Range

2020

Freshness

Last updated 2026-06-24 10:41:23.684223; freshness should be verified.

Geography

Guam