Maps of preterm births guide services to the places where people need them.
Percentage of preterm births for selected groups by zip code
In San Francisco between 2013-2017 and 2018-2022, preterm birth trended worse in zip codes at the edges of the city.
Preterm birth got significantly worse for people on Treasure Island (94130) and people in the Presidio (94129).
Preterm birth rates were over 20 percent for people with high blood pressure (hypertension) who lived in zip codes 94132, 94115, 94124, and 94134.
For population groups with fewer than 20 preterm births, see maps about the number of days of pregnancy lost (below).
Data notes and sources
Data notes and sources
Data source:
- California Department of Public Health (CDPH) Vital Record Business Information System (VRBIS). VRBIS data include one birth certificate record for each and every baby born in California.
- Data were analyzed by the San Francisco (SF) Department of Public Health Maternal Child & Adolescent Health Epidemiology Section.
Data notes:
- Preterm birth is defined as live birth before 37 weeks of pregnancy.
- We count preterm births experienced by San Francisco residents between January 1 and December 31 of each year.
Data limitations:
- Data are not shown if the number of preterm births in the group is less than 20 to protect the privacy of individual people in the group. For small groups, please see the days of pregnancy lost because of preterm birth for the group.
- The total numbers shown here may undercount the true number of preterm births, because we do not count preterm births that happened to San Francisco residents outside of California, in other states or countries.
- We do not count babies delivered in San Francisco by people who are not San Francisco residents.
Click on the arrow next to "2" to go to the "Next Page" to see the number of births and number of preterm births in each zip code and 5-year period.
Total days of pregnancy lost because of preterm birth for selected groups by zip code
In 2018-2022, zip code 94130 (Treasure Island) lost the most days of pregnancy because of preterm birth.
Significantly more days of pregnancy were lost in 2018-2022, compared to 2013-2017.
Click to select a group of San Francisco residents to see the group-specific map for 2018-2022.
Data notes and sources
Data notes and sources
Data source:
- California Department of Public Health (CDPH) Vital Record Business Information System (VRBIS). VRBIS data include one birth certificate record for each and every baby born in California.
- Data were analyzed by the San Francisco (SF) Department of Public Health Maternal Child & Adolescent Health Epidemiology Section.
Data notes:
- Preterm birth is defined as live birth before 37 weeks of pregnancy.
- We count preterm births experienced by San Francisco residents between January 1 and December 31 of each year.
Data limitations:
- Data are not shown if the number of preterm births in the group is less than 20 to protect the privacy of individual people in the group. For small groups, please see the days of pregnancy lost because of preterm birth for the group.
- The total numbers shown here may undercount the true number of preterm births, because we do not count preterm births that happened to San Francisco residents outside of California, in other states or countries.
- We do not count babies delivered in San Francisco by people who are not San Francisco residents.
Click on the arrow below the table to go to the "Next Page". Page 2 shows how the maps changed over the past 10 years. Use the filters on page 3 to see the table for specific zip codes or groups.
More information
See linked pages about preterm birth in San Francisco