California

And yes, the average pay sucks. Trying to live here on a fixed income is incredibly difficult. As a substitute teacher in the 90s I made $110 a day and that was the best pay south of LA. Today, 25 years later, the pay is a gigantic amount of $123.

https://www.indeed.com/career/substitute-teacher/salaries/San-Diego--CA

That is ridiculous for an adult with at least 5 years of college. If you plan on living here you'd better have a Swiss bank account. A former student moved from FL to San Diego and she had to move back to FL since everything from a cup of coffee to car insurance costs a ton.

https://www.indeed.com/career/substitute-teacher/salaries/San-Diego--CA