Derby Flag

Derby

County Seat:
No
Area (mi²):
5.056
State:
Connecticut

Derby is a city located in Naugatuck Valley Planning Region, Connecticut. Derby has a 2026 population of 12,915. Derby is currently growing at a rate of 3.76% annually and its population has increased by 4.9% since the most recent census, which recorded a population of 12,312 in 2020.

12.9K
Total Population
2,555
Density (mi²)
468 3.76%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)