French Population Visualised

Every square equals 0.1% of metropolitan France (≈66,000 people). The 10 largest cities are highlighted in a lighter shade inside their region. Outline is the canonical French Hexagone — pointy North and South, flat vertical sides East and West.

10 largest cities (commune): Paris · 2.10 MMarseille · 873kLyon · 522kToulouse · 504kNice · 349kNantes · 321kMontpellier · 299kStrasbourg · 291kBordeaux · 262kLille · 236k

= 1e6) return (n/1e6).toFixed(2) + ' M'; if (n >= 1e3) return (n/1e3).toFixed(0) + 'k'; return n.toLocaleString(); } document.querySelectorAll('#cells rect').forEach(el => { el.addEventListener('mouseenter', () => { const m = META[+el.dataset.i]; let html = `${m.region}
Region pop: ${fmt(m.regionPop)}`; if (m.city) html += `
${m.city} · ${fmt(m.cityPop)}`; tip.innerHTML = html; tip.style.opacity = 1; }); el.addEventListener('mousemove', e => { tip.style.left = (e.clientX + 14) + 'px'; tip.style.top = (e.clientY + 14) + 'px'; }); el.addEventListener('mouseleave', () => tip.style.opacity = 0); });