Reference Data in Zaanstad 11 indicators covering reference data for Zaanstad. IndicatorLatest Year10-yr change Rank Cooling and heating degree days - Cities and FUAs — Cooling degree 6.5 Degree days 2025 down 64.2% 1124th Cooling and heating degree days - Cities and FUAs — Change in cooling -9.13 Degree days 2025 down 459.6% 683rd Cooling and heating degree days - Cities and FUAs 1,621 Degree days 2025 down 7.3% 614th Cooling and heating degree days - Cities and FUAs — Change in heating -376.45 Degree days 2025 down 51.1% 767th Precipitation - Cities and FUAs — Extreme precipitation days 2.33 Days per year 2024 up 600.0% 1081st Precipitation - Cities and FUAs — Change in extreme precipitation 0.522 Days per year 2024 up 135.3% 760th Dependency ratio - Cities and FUAs 29.7 Percentage of population aged 15-64 years 2025 up 9.6% 591st Wind threats - Cities and FUAs — Exposure to wind threats 100 Percentage of area 2023 unchanged 1st Coastal flooding - Cities and FUAs — Built-up area exposure to 99.26 Percentage of built-up area 2022 down 0.0% 8th Internet speed - Cities and FUAs — Downloading speed 10.3 Percentage of national value 2025 up 5.1% 473rd Internet speed - Cities and FUAs — Uploading speed -5.2 Percentage of national value 2025 up 74.9% 830th