Using the link above it shows that at the VERY lowest point in the entire county, the price to income ratio went a tiny bit below 7. That was for a single year as well.
The graph you’re looking at uses per capita income, not median family income.
For Carmel Valley I see this on census.gov (1999 numbers):
Median house value – 474k
Median family income – 111k
Per capita income – 47k
Six-digit median income in CV in 1999 may come as a surprise for many. And I’m sure it’s much higher today.