Population Data Overview

At A Glance

The Demographics Research Group produces population estimates, including the official estimates of total population for localities, that are used throughout the Commonwealth for decision-making and fund allocation. Our group also produces school-age population estimates, school enrollment projections, and other data products as funding permits.

Population Estimates

FYI: Estimates focus on the present or recent past; they are typically based on a variety of administrative record data, such as births, deaths, school enrollment, and residential housing construction to detect population changes since the most recent decennial census.

Population Projections

FYI: Projections predict future population change based on prior patterns. Due to unknown future natural, social, economic, and political events, projections have higher levels of uncertainty than estimates.

School Population Data

Other Data & Resources