Professional Mac user here.

Over the last decade, I’ve worked in shops supporting Macs (as well as other OSes) along with other Mac-using developers and designers.

All my Mac-using colleagues have dual-or-higher monitor setups.

Thanks both. In corporate environments we've seen more software developers who have a Mac with multiple screens (often one of them vertical for code) than with just one. But we were unable to find any reliable stats and it's an ongoing debate in how far multiple screens (vs. just hire resolutions/more pixels on one screen actually improve performance - see https://lifehacker.com/is-the-multiple-monitor-productivity-....

In any case, CoScreen also works great with just one screen and you can share/unshare with a single tap of a button.

Every person in my company uses a Mac (~100 people) and I think only one person uses only one monitor. Every employee gets a 34in LG and a laptop stand and every person (except the one) uses the laptop open to the side for extra stuff. I know at least two employees have several external monitors. One of them has two 34in and a thunderbolt display (which is ridiculous to me, so much head movement).

Thanks a lot for the helpful data point!