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YC companies in SF Bay Area

3,241 Y Combinator companies based in SF Bay Area, with team size, growth, open roles and funding.

Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.

Hiring the mostlast 60 days
659 roles
StripeS09
  1. 2GitLab230
  2. 3Airbnb202
See all 100
Fastest growingteam, 6 months
+579%
Human ArchiveW26
  1. 2Linewise+331%
  2. 3Broccoli AI+254%
See all 100
Shrinkingteam, 12 months
−60%
LygosW16
  1. 2Moichor−58%
  2. 3Within−57%
See all 100
Raised the mostlast 12 months
$400M
ReplitW18
  1. 2Exa$250M
  2. 3Hightouch$150M
See all 100
Companies
3,241
Active
2,140
Hiring, last 60 days
341
Open roles, 60 days
4,306
People on these teams
376,190
Showing 50 of 3,241 companies
CompanyBatchTeam6 mo12 moOpen rolesTotal raisedLast round
Restaurant delivery.
S13Public84,144+3%+8%129$5.2BPost-IPO debt$2.8B, Oct 2026
Marketplace for grocery delivery and pickup
S12Public25,483+2%+5%85$2.9BPrivate equity$232M, Nov 2021
Economic infrastructure for the internet.
S0916,694+8%+21%659$10BSecondary$694M, Mar 2026
The all-in-one HR and payroll platform for global teams
W199,642+1%+21%144$1.3BSeries E$300M, Oct 2025
One place to run all your HR, IT, and Finance. Globally.
W177,889+5%+23%192$2.4BSeries G$450M, May 2025
The frontpage of the internet.
S05Acquired5,169+5%+13%0$1.3BSeries F$410M, Aug 2021
Every shift, Covered.
W174,141+10%+18%20$94.1MSeries C$30M, Feb 2022
Backup and share files in the cloud.
S07Public3,970−3%+3%35$2.8BPost-IPO debt$400M, Jun 2026
A complete DevOps platform delivered as a single application.
W15Public3,477+1%+7%230$414MPost-IPO equity$268M, Feb 2022
Platform for global logistics.
W142,978+3%+8%93$2.7BSecondary$260M, Apr 2026
A flexible work app that connects businesses with hourly workers.
S152,747+7%+16%2$148MSeries D$60M, May 2023
Change the world to value skills over pedigree
S112,231+4%+14%3$103MSeries D$60M, Mar 2022
Vanta, the proven leader in automated compliance helping startups…
W181,993+6%+34%9$503MSeries D$150M, Jul 2025
The leader in automated data movement
W131,934+5%+13%44$853MDebt$125M, May 2023
Extremely talented assistants for busy people
W151,877+1%+3%YC$12.3MUndisclosed round$139K, Jun 2024
Professional website design and publishing platform.
S131,847+9%+16%46$335MUndisclosed round$400K, Apr 2025
People infrastructure for the future of work
S141,846+3%+14%28$740MUndisclosed round$61.1M, May 2025
The easiest way to automate your work.
S121,530+3%+8%12$1.4MUndisclosed round$1.4M, Apr 2024
The future of B2B spend
S201,421+13%+38%3$371MSeries D$190M, Oct 2024
Self-driving cars.
W14Acquired1,342−5%−14%0
Software development platform.
S101,108+7%+20%38$436MSeries C$105M, Mar 2022
Apollo is the foundation of your entire go-to-market strategy.
W16987+44%+54%45$251MSeries D$100M, Aug 2023
The 401(k) for small and medium-sized businesses.
S15930+12%+20%36$915MUndisclosed round$100M, Oct 2025
A developer-friendly and enterprise-grade search API.
W14923+9%+10%19$334MSeries D$150M, Jul 2021
A mental health benefits platform for employers.
W18920+2%−1%5$167MSeries D$74M, Feb 2021
AI-powered contract management
S15868+3%+15%1$334MSeries E$150M, Jan 2022
The genetic testing platform detecting and measuring disease.
S17Public866+13%+26%21$426MSeries D$130M, Jun 2024
Unlocking the power of biotech with modern software for modern science
S12813+3%+3%4$412MSeries F$100M, Nov 2021
Mixpanel is event analytics for builders that need answers.
S09771+18%+43%26$277MSeries C$200M, Nov 2021
All-in-one app for internal communication and HR
W22752+22%+79%1$77.5MSeries A$77.5M, Feb 2026
The leading Composable CDP and AI Decisioning platform
S19658+14%+51%52$332MSeries D$150M, Apr 2026
AI-powered Language Operations platform
W14Acquired655−1%−5%0$112MUndisclosed round$21M, Dec 2023
Customized fertility benefits for modern companies.
S17632+2%+11%3$114MSeries C$75M, Aug 2021
A learning platform that enables you to train your staff or customers.
S15581−4%−10%YC$402MUndisclosed round$30M, May 2023
All-in-one recruiting platform that empowers hiring excellence in…
W19580+31%+73%56$120MSeries D$50M, Jul 2025
Customer communications hub for building strong relationships
S14579+6%+13%4$204MSeries D$65M, Jun 2022
The cloud-native, operational database built for speed and scale.
W11565+3%+2%14$464MSeries F$30M, Oct 2022
Advanced satellites for high orbits.
W16564+7%+20%103$1.7BDebt$468M, Sep 2026
Modern insurance brokerage.
W18Acquired542−11%−18%0$310MSeries D$200M, Apr 2022
Building Clinical Superintelligence.
S18541+20%+54%YC$29.1MUndisclosed round$7.9M, Apr 2024
Learning platform for job seekers with job applications automation
S21533−5%−5%0$9.5MSeries A$8M, Mar 2023
Turn physical objects and environments into 3D models in seconds.
W12Public527+2%0%14$418MPost-IPO equity$295M, Jul 2021
API-first stock and crypto brokerage platform
W19525+20%+47%46$764MDebt$135M, Jul 2026
Communication app for K-8 teachers, kids, and families
S12523+4%+1%1$191MUndisclosed round$125M, Apr 2024
Turning company knowledge into expert teams
W15517+1%+3%11$78.4MSeries B$62M, Dec 2021
Talent engagement platform
S17Acquired5070%+7%0
The platform for all your life events.
S16503+2%+8%YC$107MSeries B$60M, Nov 2022
Language learning through video chat.
S11Acquired493+1%0%0$1MSeed$1M, Dec 2014
Build in a weekend. Scale to millions.
S20484+38%+106%0$1.2BSeries F$150M, Oct 2026
TRM is building a safer world for billions of people.
S19481+14%+36%67$220MSeries C$70M, Sep 2026

How this works

1. The roster

Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.

2. The numbers

Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.

3. The lists

Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.

Built with Crustdata. Get your own API key and build your own.

The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.

  • Company search for team size, growth and funding
  • Job search with a count by company, for who is hiring and for what
  • A watch that re-runs the search weekly and sends only what changed
# 1. every company with Y Combinator as an investor
curl https://api.crustdata.com/company/search \
  -H "authorization: Bearer $CRUSTDATA_API_KEY" \
  -H "x-api-version: 2025-11-01" \
  -d '{
    "filters": { "field": "funding.investors",
                 "type": "in", "value": ["Y Combinator"] },
    "fields": ["basic_info.name",
      "headcount.total", "headcount.growth_percent",
      "funding.total_investment_usd"],
    "limit": 100
  }'

# 2. open listings per company, last 60 days (limit 0 = counts only)
curl https://api.crustdata.com/job/search \
  -H "authorization: Bearer $CRUSTDATA_API_KEY" \
  -H "x-api-version: 2025-11-01" \
  -d '{
  "filters": { "op": "and", "conditions": [
    { "field": "company.basic_info.company_id",
      "type": "in", "value": [...] },
    { "field": "metadata.date_added",
      "type": "=>", "value": "2026-08-24" } ]},
  "limit": 0,
  "aggregations": [{ "type": "group_by",
    "field": "company.basic_info.company_id", "agg": "count" }]
}'

# 3. the same company filter as a weekly watch: POST /watch/company/search

Questions about SF Bay Area YC companies

How many SF Bay Area YC companies are there?

3,241 Y Combinator companies are based in SF Bay Area; 2,140 are active.

Which SF Bay Area YC companies are hiring?

341 companies posted roles in the last 60 days, led by Stripe (659 roles), GitLab (230 roles) and Airbnb (202 roles). 802 mark themselves as hiring on YC's directory.

Which SF Bay Area YC companies are growing fastest?

By team growth over 6 months (10+ people): Human Archive (+579%), Linewise (+331%) and Broccoli AI (+254%).

Which SF Bay Area YC companies raised the most?

Largest latest rounds in the last 12 months, after their YC batch: Replit ($400M), Exa ($250M) and Hightouch ($150M).

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