Reference Data in Delaware 18 indicators covering reference data for Delaware. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs 2,354 Degree days 2025 down 1.9% 222nd Cooling and heating degree days - Cities and FUAs — Cooling degree -27.84 % change on previous year 2025 down 6,638.9% 9th Cooling and heating degree days - Cities and FUAs — Change in cooling -236.12 % change on previous year 2025 down 10,242.9% 12th Cooling and heating degree days - Cities and FUAs, annual growth rate 15.08 % change on previous year 2025 up 176.1% 3rd Cooling and heating degree days - Cities and FUAs — Change in heating 71.22 % change on previous year 2025 up 161.7% 2nd Cooling and heating degree days - Cities and FUAs — Change in heating -124.7 Degree days 2025 down 57.5% 319th Cooling and heating degree days - Cities and FUAs — Change in cooling -43.17 Degree days 2025 down 16.1% 1080th Cooling and heating degree days - Cities and FUAs — Cooling degree 194.08 Degree days 2025 down 3.0% 503rd Precipitation - Cities and FUAs — Change in extreme precipitation -0.554 Days per year 2024 down 125.8% 978th Precipitation - Cities and FUAs — Extreme precipitation days 9.9 Days per year 2024 down 21.4% 473rd Exposure to extreme precipitation — Annual precipitation change 19.09 Millimetres per year 2023 up 24.0% 333rd Exposure to extreme temperature — Annual temperature change 1.44 Degrees celsius 2023 up 206,955.0% 306th Dependency ratio - Cities and FUAs 26.9 Percentage of population aged 15-64 years 2024 up 15.5% 742nd Wind threats - Cities and FUAs — Exposure to wind threats 0 Percentage of area 2023 — 271st Coastal flooding - Cities and FUAs — Built-up area exposure to 0 Percentage of built-up area 2022 — 277th Main mode of transport to work - Cities and FUAs — Employed persons 48,204 Persons 2023 up 1.3% 239th Internet speed - Cities and FUAs — Uploading speed -43.3 Percentage of national value 2025 up 2.5% 1253rd Internet speed - Cities and FUAs — Downloading speed 0.2 Percentage of national value 2025 up 103.6% 875th