Census Data Shows Major Changes in Derby

Information taken from data prepared by DataHaven

Data from the 2020 U.S. Census shows some significant changes for CT's smallest city as Derby lost close to 600 residents over the ten year period since the last census. The decline was particularly noticeable in the children category where the drop of 369 children represented a 14% reduction over the decade. The city's diversity showed significant change as well. the Non-Hispanic White category lost 2,004 residents which was a 21% decline while the Non-Hispanic saw a 54% increase of 482. The Hispanic of any race category grew by 39% to a total of 2,544, an increase of 714.

To put things in perspective, Derby's population has been relatively stable since reaching 11,238 in the 1920 census. The first data from 1756 showed Derby with a population of 1,000. By 1790, it had grown to 2994, before it suffered a 37% loss in the 1800 census attributed to Oxford splitting off from Derby in the 1800 census.

Derby then grew dramatically from 1800 to 1880 as the population grew in every decade. Then in 1890 it lost almost half its population, but once again the 48.76% loss was due to Ansonia splitting off from Derby and taking over 5,000 people with them! Three decades of small declines followed due to war and depression, but the '50s and '60s brought another growth spurt of over 20%.  Derby's population peaked at 12,902 for the 2010 census before this year's drop.

Derby Population 1756 - 2020

Story posted on August 13, 2021 

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