10K on average. Never less than 8k unless I'm ill. I live a mile from my office (self employed so I chose where to rent an office as I intended to be able to walk), so walk to/from work, and also have a lunchtime walk of a couple of miles. On a "normal" day, that's around 8k. I have a standing desk at work, which means I walk around the office more, as I'm already stood up, it's not the same effort to stand after sitting down, so instead of accumulating tasks to do, like getting a file, making a coffee, copying a document at the same time, I'll just do all that as and when I think of it, so lots more steps just pottering around the office. I have a step counter app on my phone so know exactly how many steps I've done.
Not easy on heavy rain days as I don't like getting soaked, so will drive to/from work instead, but still doing a couple of thousand steps around the office and I finish earlier (due to time worked rather than walking) so I'll walk at home as I have a treadmill on the integral garage and do probably 6/7k, which takes me up to my minimum of 8k
At weekends I just take myself out for a couple of walks - I have quite a few "loops" from home based around canal towpaths, or I'll take the car to the shore or to a couple of country walks along old disused railway tracks. Maybe on a nice weekend, I'll do maybe 15k steps.
Also amazing how many steps you can accumulate just going shopping etc. I try to park at the far end of car parks, so get some steps in just between the car and the shops, or in town, I'll park outside the centre and walk in (save parking charges too!).