AI PM by day. Self-taught dev 6–8 am, before my judgment wakes up. Stats nerd who still checks the p-value on his own motivation.
Bengaluru, India
Joined November 2010
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SmartMaps is live 🚀 smartmaps.in
Kerala Atlas is now SmartMaps. What began as a weekend map of Kerala is now an atlas of every district, local body and village, with the rest of India on it too.
Here's what's new 🧵 1/11
And GDP: each state's official district GDP, carried to 2026-27 with India's official growth rate. Inside a district it's shared by population density, night lights and buildings seen from space, so a city's GDP is an estimate, marked ≈.
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These are modelled estimates, not official counts, with every source named on the site.
Try it: smartmaps.in → Layers → Urban agglomeration → Ranked list, then pick Population or GDP. Switch between India and your state.
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How many people live in each Indian city in 2026? No census has counted since 2011, so we estimated every urban agglomeration: the city and the towns that have grown into it.
Rank all 880 by population or GDP on SmartMaps 🧵
Top 15 by GDP, 2026-27 (₹ lakh crore):
1 Delhi 22.0
2 Mumbai 16.8
3 Bengaluru 13.4
4 Chennai 8.4
5 Hyderabad 7.8
6 Kolkata 6.1
7 Ahmedabad 4.0
8 Pune 3.9
9 Surat 2.8
10 Kochi 2.4
11 Nagpur 1.8
12 Coimbatore 1.6
13 Kozhikode 1.5
14 Visakhapatnam 1.5
15 Thiruvananthapuram 1.4
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New on SmartMaps: Top 10 lists inside the 3D buildings map 🏙️
The spikes show where the buildings are. The list ranks them. Same picture, same numbers.
Idea from Joe (@americakaran ) 🙏 🧵
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Most built-up places in Kerala (share of land covered by buildings):
1 Thrikkakara 30% 2 Kochi 29% 3 Aluva 27% 4 Palakkad 24% 5 Valapattanam 23%
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Try it: smartmaps.in → Layers → Buildings in 3D (Pro) → Top 10 or Tallest
Data: EU GHSL (built-up), Google Open Buildings (towers, 2023), OpenStreetMap and checked lists (tallest buildings).
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Every tall building in India's big cities, mapped in 3D from satellite data. 🧵 Mumbai first: about 18,000 towers of 10+ floors across the metro, and some 64,000 buildings of 5+ floors. Around Bandra–Khar, one square kilometre holds ~460 of them.
How: built-up land from the EU’s GHSL (2025); heights from Google’s Open Buildings 2.5D, mid-2023 imagery, so towers finished since aren’t in yet.
Satellite estimates: 10+ floor towers are found 70–90% of the time; some 3–4 floor buildings read as 5+.
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Explore 60+ Indian cities: smartmaps.in → Layers → Buildings in 3D (Pro).
Pinch into your neighbourhood and tap any column for its numbers.