A college education can affect nearly every aspect of a person’s life, and it may be more important now than ever before. Studies show the typical four-year college graduate earns $21,000 more than the typical high school graduate.

A four-year college degree may not make sense for everyone, however, and many are unable to afford college. Bachelor’s degree attainment rates vary considerably across the country.

Nationwide, 30.6% of adults have at least a bachelor’s degree. In the San Francisco, California metro area, the 47.2% share is far larger than the comparable national share. Across California as a whole, some 32.3% of adults have at least a bachelor’s degree, a relatively modest share compared to all states.

Of the 26 metro area in California, San Francisco’s bachelor’s degree attainment rate is the second highest.

Those with a college education are often better equipped to weather economic downturns and remain employed. The educational attainment rate in San Francisco may partially explain the state of the area’s labor market. Across the metro area, 3.5% of the labor force are out of work, lower than the 4.7% national unemployment rate.

Earning a college degree is one of the best ways to expand opportunities, especially to higher-paying jobs. The relatively high bachelor’s degree attainment rate in San Francisco partially explains income levels across the metro area population. The typical household in the San Francisco metro area earns $88,518 a year, well above the $55,775 median income nationwide.

A higher bachelor’s degree attainment rate in a given metro area often means that a larger than typical share of area adults also have a high school diploma. Similarly, a lower than average bachelor’s degree attainment rate often accompanies a lower than average share of adults with at least a high school diploma.

Just as adults in the San Francisco metro area are more likely than most adults nationwide to have a four-year college degree, the area is also home to a higher than typical share of adults with a high school diploma. Across San Francisco, 88.2% of adults have completed high school, compared to 87.1% of American adults.