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YC companies in Philadelphia

17 Y Combinator companies based in Philadelphia, with team size, growth, open roles and funding.

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

Fastest growingteam, 6 months
+30%
Albacore Inc.S25
  1. 2NaturAll Club+15%
  2. 3Resquared+3%
See all 3
Companies
17
Active
10
Hiring, last 60 days
0
Open roles, 60 days
0
People on these teams
283
Showing 17 of 17 companies
CompanyBatchTeam6 mo12 moOpen rolesTotal raisedLast round
Affordable care via ICHRA and primary care with visits, meds, labs…
S20104−3%+24%YC$24.8MUndisclosed round$16M, Jan 2025
Drone submarines
S2535+30%+59%0$6.5MSeed$6.5M, Sep 2025
Marketing automation platform for selling to local businesses.
W2133+3% YC$5MSeed$5M, Jul 2024
The No Infrastructure Platform as a Service
S14Acquired24 −14%0$12.1MSeries A$12M, Jun 2019
Frozen beauty products.
W1915+15%+25%0$1.1MUndisclosed round$1M, Aug 2019
Dead simple LLM testing and iteration
S23Acquired140%0%0$500KYC investment$500K, Sep 2023
The best way for any business to offer delivery.
W1913−7%−7%YCSeedMar 2022
A DecisionOps platform that accelerates optimization AI teams
W20Acquired10−41%−44%0$19.4MSeries A$8M, Nov 2022
Regulating the immune system to block cancer & autoimmune diseases
S2190%0%0$8.7MConvertible note$4.5M, Nov 2023
The SAFE for commercial contracts
W238−11%−11%0$5MYC investment$500K, Apr 2023
AI-powered EHR for independent mental health professionals
W236−14%−40%YC$500KYC investment$500K, Apr 2023
At-home blood testing: measure + analyze + enhance.
W17Inactive50%0%0$1.8MUndisclosed round$1.1M, May 2021
Converting biology into digital molecular maps
S243  0$500KYC investment$500K, Sep 2024
AI Co-Pilot for Health Insurers to Authorize Treatment Faster
W23Acquired2  0$500KYC investment$500K, Apr 2023
AI Native Commercial Insurance Broker
X251  0
Automatic voice-of-customer trends & metrics from sales conversations.
S21Inactive1  0$125KYC investment$125K, Sep 2021
Outsourced, high volume food delivery.
S14Inactive  

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 Philadelphia YC companies

How many Philadelphia YC companies are there?

17 Y Combinator companies are based in Philadelphia; 10 are active.

Which Philadelphia YC companies are hiring?

We found no job postings for these companies in the last 60 days. 4 mark themselves as hiring on YC's directory.

Which Philadelphia YC companies are growing fastest?

By team growth over 6 months (10+ people): Albacore Inc. (+30%), NaturAll Club (+15%) and Resquared (+3%).

Which Philadelphia YC companies raised the most?

No reported rounds after their YC batch in the last 12 months.

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