Reference Data in Jersey 35 indicators covering reference data for Jersey. IndicatorLatest Year10-yr change Rank Wealth share of the richest 1% 22.9% 2024 up 1.0% 192nd Fertility rate: births per woman 1.37 live births per woman 2023 down 12.6% 199th Exposure to extreme temperature — Annual temperature change 1.23 Degrees celsius 2023 up 506.0% 67th Exposure to extreme precipitation — Annual precipitation change 218.57 Millimetres per year 2023 up 945.4% 26th Average age of mothers at childbirth 30.75 years 2023 up 2.7% 48th Fertility rate: births per woman 1.37 live births per woman 2023 down 12.6% 199th Fertility rate vs. Human Development Index 1.37 live births per woman 2023 down 12.6% 199th Area burned by wildfires by land cover type 0 hectares 2025 — 146th Wildfire area burned by land cover type 0 hectares 2025 — 99th Do more people live in urban or rural areas? 34.5% 2025 up 0.0% 203rd Red List Index 0.95 index 2025 unchanged 40th People not using improved sanitation facilities 0 people 2024 — 186th Share of population not using improved sanitation facilities 0.0% 2024 — 186th Sanitation facilities usage 0 people 2024 — 133rd Number of children under 5 4,430 people 2023 down 16.7% 201st Median age 43.1 years 2023 up 7.0% 30th Number of 1-year-olds, by sex 421 people 2023 down 22.9% 202nd Probability of dying in infancy, by sex 0.8% 2023 up 15.8% 133rd Probability of dying that year, among males 0.9% 2023 up 7.3% 148th Total dependency ratio 49.6% 2023 up 8.6% 170th Old-age dependency ratio 27.9% 2023 up 22.0% 48th Age dependency breakdown 27.9% 2023 up 22.0% 48th Number of people living in the capital city 51,909 people 2065 down 2.0% 189th Member countries of the International Treaty on Plant Genetic Resources for Food and Agriculture 0 number 2025 — 154th People not using safely managed sanitation facilities 5,192 people 2024 up 3.3% 142nd Share of population using safely managed sanitation 95.0% 2024 unchanged 25th Annual area burnt by wildfires by region 0 hectares 2025 — 159th People using at least basic sanitation facilities 103,846 people 2024 up 3.3% 192nd Share of population living in urban areas 90.8% 2020 up 4.0% 29th Share of population living in urban and rural areas 90.8% 2020 up 4.0% 29th Annual area burnt by wildfires 0 hectares 2026 — 173rd Annual number of wildfires 0 wildfires 2026 — 173rd Annual area burnt per wildfire vs. number of fires 0 wildfires 2026 — 173rd Chlorophyll-a deviation from the global average 0.3% 2022 down 98.1% 135th Number of companies publishing sustainability reports that meet the minimum reporting requirements 6 number 2023 up 200.0% 58th