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Data Spotlight
Bay Area
Is Lowell segregated? Here’s how every S.F. school scores on a racial ‘divergence’ index
San Francisco schools are often extremely segregated. We look at which schools are most diverse and least diverse using an academically-supported formula, and why that might be.
By the Numbers
Our favorite maps
S.F. is home to 669,000 trees. Here's where they are
See 170-plus areas in where blazes repeatedly ignited
Why isn’t one of S.F.'s neighborhoods growing?
These San Francisco neighborhoods saw biggest exodus
More from the Data Team
Climate
California drought: Why more than 530,000 acres of farmlands are now left barren
In August 2022, there were 531,000 acres of unplanted farmland in California.
By Yoohyun Jung
Health
In one California county, just 4% of pre-teens are vaccinated against COVID: ‘We can do a lot...
At the start of the new school year,the Bay Area boasts some of California’s highest rates of child vaccination against COVID-19, providing parents some comfort as the virus continues circulating. But there’s room for improvement to keep students...
By Aidin Vaziri and Susie Neilson
Bay Area
Where do San Francisco’s Millennials move to the city from? Here’s what the data says
Where do San Francisco's young adults come from? We explore newly released incredibly detailed data on the topic.
By Susie Neilson
Politics
Tesla neighborhoods: These are the Bay Area ZIP codes with the most electric vehicles
Bay Area drivers are far more likely to own electric cars in communities with a higher average income and more single-family homes — a problem state and federal officials want to alleviate by offering incentives and rebates.
By Dustin Gardiner and Yoohyun Jung
Food
These maps show the S.F. neighborhoods that lost the most restaurants during COVID
How many San Francisco restaurants closed during the pandemic? New data offers insight into the state of the city’s dining industry in the wake of the cororonavirus.
By Elena Kadvany and Nami Sumida
Climate
Amid drought, some California communities are forced to rely on hauled-in or bottled water. This...
Small and rural communities are more vulnerable to drought.
By Yoohyun Jung
San Francisco
These charts show exactly where San Francisco’s wealthiest people moved in the pandemic
Data from the IRS show the difference between where richer and poorer San Franciscans fled to at the height of the pandemic.
By Susie Neilson
Politics
Monkeypox outbreak: California releases first data report, revealing disproportionate toll on...
As monkeypox cases quickly spread across California, the virus is taking an uneven toll on gay and bisexual men and transgender people, according to new data released Friday by the state Department of Public Health.
By Dustin Gardiner, Yoohyun Jung
Bay Area
Nearly every Bay Area city lost kids over the last decade — except this one. Here’s why
Which Bay Area cities have the most kids? We analyzed census data to find out.
By Susie Neilson
Climate
These before and after images show the devastating effects of California’s drought — from space
Drought’s impact is visible from space.
By Yoohyun Jung
Real Estate
Richer people left San Francisco in the pandemic. And they took billions of dollars with them
The average income of people who moved out of San Francisco during the early part of the pandemic surged from a year earlier, taking a large chunk of the economy away.
By Roland Li and Susie Neilson
San Francisco
Is S.F. law enforcement cracking down on drug users? Top officials are sending mixed messages
As San Francisco grapples with how to address the Tenderloin’s enduring miseries, the Police Department’s directive to be more aggressive with drug users seemed to clash with how newly appointed District Attorney Brooke Jenkins said her office...
By Megan Cassidy and Susie Neilson
San Francisco
Why this neighborhood has the most Airbnbs of any San Francisco residential area
Which part of San Francisco has the highest concentration of Airbnbs? We examined data collected by the group Inside Airbnb to understand the geography and legality of Airbnbs in the city today.
By Susie Neilson
San Francisco
San Francisco and the U.S. share some common first names — but the city is unique in its most...
What are the most common names in San Francisco? We dug into voter registration data to find out.
By Nami Sumida
Bay Area
Family of missing 24-year-old East Bay woman receives evidence possibly pointing to body’s location
Police investigating the disappearance of Alexis Gabe have found what appear to be handwritten directions to where her alleged killer intended to bury her body, Gabe’s family said on social media.
By Susie Neilson
Bay Area
Firefighters stop forward progress on brush fire in Pittsburg before it reaches power plant
A vegetation fire in Pittsburg that has been smoldering for weeks has begun burning again in earnest, Contra Costa County’s fire department said on Friday.
By Susie Neilson
San Francisco
Here is the exact type of person who was most likely to leave San Francisco in the pandemic
San Francisco’s population plummeted in the pandemic’s first year. We examined census data to look at which age and racial groups contributed most to the decline.
By Susie Neilson
San Francisco
Who’s actually voting in San Francisco? These charts show detailed data on 500,000 voters
The Chronicle obtained incredibly detailed data on S.F. voters. It showed that voters who are older and whose primary language is Chinese were unusually likely to cast ballots in the Feb. 2022 school board recall.
By Nami Sumida
San Francisco
How does SFPD compare to other police departments? These 8 charts show the key trends
These charts will help you better understand SFPD. From salaries/overtime pay, response time to urgent calls, number of officer-involved shootings, clearance rates over time, demographics, and more.
By Susie Neilson
San Francisco
What do San Franciscans want to know? Here’s what Google search data reveals
What do San Franciscans care about? One way to understand that is to look at what they are searching on Google.
By Nami Sumida
California
These charts show how California is generating energy differently than a decade ago
How California produces electricity looks far different now than 10 years ago as it continues to seek sustainable options while keeping the lights on through heat waves and wildfires. Natural gas, a nonrenewable source, still makes up about half...
By Yoohyun Jung
Climate
California’s drought means less water to go around. Who is winning the pursuit for water — and...
In California, state and federal water managers who control massive projects that supply farms and cities are having to make hard choices.
By Yoohyun Jung and Kurtis Alexander
California
Abortion access in California isn’t equal statewide. These maps show where clinics are concentrated
California bills itself as a pro-choice haven, but 22 of the state’s 58 counties didn’t have a single open abortion clinic as of 2021.
By Susie Neilson
Climate
Why toxic algae blooms are on the rise across California — and expected to get worse
Harmful algal blooms are natural parts of the ecosystem, but they can also release toxins that sicken or even kill people and animals. They’re becoming more common as temperatures rise and water systems are starved and disrupted.
By Yoohyun Jung
Election
Chesa Boudin recall: Map of how S.F. neighborhoods voted reveals a key reason for his ouster
Which parts of San Francisco drove the recall of Chesa Boudin on Tuesday? We examined neighborhood-level voter data to find out.
By Susie Neilson and Nami Sumida
Election
Biggest decisions S.F.'s new D.A. Brooke Jenkins will have to make right away
Following the recall of Chesa Boudin, new D.A. Brooke Jenkins has some important policies to consider.
By Susie Neilson, Joshua Sharpe and Mallory Moench
Election
How does The Chronicle decide when to call San Francisco elections?
We might know the results of the Chesa Boudin recall soon after polls close. Here’s why.
By Dan Kopf
Politics
Chesa Boudin recall supporters raised $7.2 million to oust the San Francisco D.A. These are the...
More money was raised for the recall against San Francisco’s district attorney than for the last race for mayor.
By Susie Neilson
Health
‘Some counties have significant undercounts’: Data reveals California’s ‘hidden’ COVID pandemic...
COVID-19 has officially killed more than 90,000 Californians. But research suggests the true toll of the pandemic could be much higher than that. We explore these tens of thousands of additional “hidden” excess deaths and where they are coming...
By Susie Neilson
Climate
California’s drought has caused entire towns to sink nearly a foot in just one year. This map...
Land subsidence caused by groundwater pumping is a century-old issue in California. But with drought and climate change, it’s getting worse.
By Yoohyun Jung