DPH: Population Statistics

Population Statistics


Our Population Statistics Overview provides detailed information about each of the population data sources available for Connecticut, limitations of and differences between the datasets, and Q & A examples which may help when choosing a data source.  The US Census Bureau's population estimates terms and definitions may also be helpful.



Annual July 1 Estimates

The Connecticut state, county and town level populations are estimated at the calendar year midpoint (July 1) each year.  These July 1 estimates typically constitute the basis for determining birth, death, and other population based rates. The annual estimate represents the official Connecticut population estimate for the year.


Decennial Census Population Counts

The US Census Bureau takes a census of the population of the United States every 10 years which is known as the decennial census.  A major source of population data for CT, the decennial census attempts to provide a true count of the population rather than an estimate.  The decennial census serves as the population base for the next 9 years of annual estimates


Other US Census Products

In addition to the decennial census, the U.S. Census Bureau also releases several other data products that provide detailed social, demographic, and economic data. 


Content Last Modified on 11/25/2016 12:02:18 PM