Salzburg's stations (OMV, Shell, BP, Eni, JET and Diskont) cluster along the A1/A10 junction and the city approaches, and German day-trippers routinely cross the border to fill up on cheaper Austrian fuel. EV charging is well established, including fast hubs on the A1 and A10 towards the Tauern.
Salzburg has more charging points mapped than fuel stations, 231 against 103. That is still rare, and it makes this an easy place to arrive on a low battery. See Salzburg on the map →
Plan your stop
In Salzburg the filters that actually narrow things down are diesel (47), LPG (3), CNG (6) and CCS charging (20). Travelling at night, switch on "open now": 68 places are tagged 24/7. When you arrive, a quick confirmation keeps the map right for the next driver in Salzburg.