For Fukushima the evac zone was 20km around the plant. A similar scenario in the US would see a 50 miles (80km) radius evac zone recommended by the U.S. Nuclear Regulatory Commission (at least the the time of it happening in Japan: https://www.scientificamerican.com/article/mass-evacuations-... ).

I don't think I have ever heard of such large zones for other industrial disasters, the estimatated maps I've seen for Bhopal, one of the if not the worst industrial chemical disaster ever, had a radius for the gas spread of about 7km (and it killed a lot more people really quickly). It is of course annecdotal, but each disaster has its own circumstances: wind, water/soil contamination, etc. that impose different measures to take... but in general nuclear disasters have a much wider radius for the fallout, that's why the security/processes for it are way more demanding and generally successfully applied.

But the main point was that we can't discount these risks and their results (deaths) when a disaster happened, as rare as they are (thankfully). They are part of it, and counting these deaths is just honest, as I said other sources of energy in the course of their "normal" operation kill way more people and destroy our environment in the process. It's a no-brainer to choose nuclear power over them.