Reference Data in Jefferson (AL) 12 indicators covering reference data for Jefferson (AL). IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 504.93 Degree days 2025 down 17.7% 207th Cooling and heating degree days - Cities and FUAs — Change in cooling -81.96 Degree days 2025 down 405.0% 1206th Cooling and heating degree days - Cities and FUAs 853.73 Degree days 2025 down 2.5% 944th Cooling and heating degree days - Cities and FUAs — Change in heating -128.29 Degree days 2025 down 21.0% 325th Precipitation - Cities and FUAs — Extreme precipitation days 23.45 Days per year 2024 up 29.8% 138th Precipitation - Cities and FUAs — Change in extreme precipitation 5.52 Days per year 2024 up 4,035.6% 148th Dependency ratio - Cities and FUAs 27.4 Percentage of population aged 15-64 years 2024 up 27.4% 720th Wind threats - Cities and FUAs — Exposure to wind threats 4.58 Percentage of area 2023 — 232nd 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 274,784 Persons 2023 down 1.7% 71st Internet speed - Cities and FUAs — Downloading speed 4.5 Percentage of national value 2025 up 462.5% 707th Internet speed - Cities and FUAs — Uploading speed -12.2 Percentage of national value 2025 down 303.3% 944th