The data that answers it

Ranked by fit · best first
U.S. Census Bureau Primary fit
Business Dynamics Statistics (BDS)

The governmental BDS API and full files publish firm- and establishment-age classes, including startup/age-zero and left-censored classes, together with firm, establishment, and employment counts by supported geography, NAICS, year, and size. This directly supplies operating-age distributions; it does not substitute registry formation age for employment-based age.

Free APIFull file National US 26 fields
U.S. Bureau of Labor Statistics Primary fit
Business Employment Dynamics

The governmental BED standing age tables publish establishment-age classes, March observation periods, total establishment counts, and employment by establishment age for supported national/state industry tables. They directly supply externally observed operating-age distributions, not firm formation age.

Free APIFull file National US 18 fields
Data Axle Strong fit
Data Axle Historical Database

For buyer-filtered annual operating-location snapshots, Data Axle supplies an estimated opened-for-business year interval, first-database-appearance year explicitly distinguished from opening, persistent location identity, snapshot year/month, industry and geography fields, and filtered frequency counts. This supports a distribution of externally observed operating-location age when the answer preserves estimate-versus-first-observation semantics, the 1997 left-censor boundary, snapshot vintage, and Data Axle classification basis; it does not establish legal formation age.

Paid APIFull file Unknown 18 fields
OpenCorporates Strong fit
OpenCorporates Companies API

The non-contributory enterprise bulk product documents company jurisdiction, status, incorporation date, and provenance time, directly supporting incorporation-vintage distributions across its registry universe. It does not prove operation or employer status.

Paid APIFull file Global 6 fields
People Data Labs Supporting fit
People Data Labs Company Enrichment API

The non-contributory Company Dataset supplies founded year with industry, size, and location fields through licensed bulk delivery, supporting formation-vintage distributions within the PDL universe. Founded year is not verified first operation.

Paid APIFull file Global 1 field
Texas Secretary of State Supporting fit
SOSDirect Business Organizations

Texas non-contributory BEST master unloads document formation or creation date, status, entity geography, and reusable file layouts, supporting Texas registered-entity age distributions only.

Paid Full file Subnational 22 fields
Florida Department of State, Division… Supporting fit
Sunbiz Business Entity Index and Data Downloads

Florida's non-contributory free quarterly all-record files document formation filing date, status, principal-address geography, and file vintage, supporting Florida registered-entity age distributions only, not operating-business counts.

Free Full file Subnational 15 fields

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