Derby, Connecticut

Derby population, 2020 to 2024

Derby added 603 residents from July 2020 to July 2024, a change of +4.9%. In the latest year it moved by +468. Among 21 Connecticut places of 5,000 or more, that growth ranks 4th; the median place changed by +2.6%. The median place of 5,000+ in Connecticut has 55,379 people, so Derby is 23% of it.

Derby covers 5.06 square miles of land and 0.35 of water, for 2,552 people per square mile of land. The median Connecticut place of 5,000+ has 3,189, so Derby is less dense than the typical town.

What county Derby is in

All of Derby's residents live in Naugatuck Valley Planning Region, which had 462,220 residents in 2024. Derby holds 2.8% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Derby

1 ZIP Code Tabulation Area (ZCTA) overlaps Derby by at least 10% of the ZCTA's or the city's land: 06418. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Derby is

The Census internal point of Derby is at 41.326100, -73.082600. Hartford, the capital, is 36.7 miles NE in a straight line. The nearest larger place is Ansonia, CT (19,195 people), 1.4 miles away. The nearest city of 100,000 or more is New Haven, CT, 8.3 miles away.

Daylight in Derby

At 41.33° N, Derby gets about 15 h 10 min of daylight around the June solstice and 9 h 11 min around the December solstice, a swing of 5 h 59 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Derby

The eight nearest incorporated places of 1,000+ in Connecticut, measured between internal points. The closest is Ansonia, 1.4 miles away, with 19,195 people.