Resources to Find the Data You Need, 2016 Edition by Nathan Yau.
From the post:
Before you get started on any data-related project, you need data. I know. It sounds crazy, but it’s the truth. It can be frustrating to sleuth for the data you need, so here are some tips on finding it (the openly available variety) and some topic-specific resources to begin your travels.
This is an update to the guide I wrote in 2009, which as it turns out, is now mostly outdated. So, 2016. Here we go.
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If you know Nathan Yau’s work, FlowingData, then you know this is “the” starting list for data.
Enjoy!