The term CITY NNW OF SAN FRANCISCO has two crossword solutions: Eureka (6 letters) and Santa Rosa (9 letters). Eureka is a city in California located about 250 miles north of San Francisco. It is the county seat of Humboldt County and is known for its Victorian architecture. Santa Rosa is a city in California located about 50 miles north of San Francisco. It is the county seat of Sonoma County and is known for its wine production.