# US Business Index

> A public directory of 5,106 US companies organized by state and industry, built only from public sources (SEC EDGAR, Wikidata, Wikipedia facts, official sites). 1366 are public companies with dated SEC financials. Facts are free to use with attribution. Financial figures are factual reference only and not investment advice.

## Data API
- [All companies (JSON)](https://statecompanyindex.com/api/companies.json): index of every company
- [Single company (JSON)](https://statecompanyindex.com/api/companies/{slug}.json): full record
- [Companies by state (JSON)](https://statecompanyindex.com/api/companies/state/{state}.json): per-state slice
- [Corporate graph (JSON)](https://statecompanyindex.com/api/graph.json): parent/subsidiary and person edges

## Browse
- [Companies by state](https://statecompanyindex.com/state)
- [Companies by industry](https://statecompanyindex.com/industry)
- [Public companies by state](https://statecompanyindex.com/public-companies)
- [Guides](https://statecompanyindex.com/guides): data-backed rankings with methodology

## States (49)
- [Alabama](https://statecompanyindex.com/state/alabama) (95)
- [Arizona](https://statecompanyindex.com/state/arizona) (87)
- [Arkansas](https://statecompanyindex.com/state/arkansas) (92)
- [California](https://statecompanyindex.com/state/california) (558)
- [Colorado](https://statecompanyindex.com/state/colorado) (212)
- [Connecticut](https://statecompanyindex.com/state/connecticut) (191)
- [Delaware](https://statecompanyindex.com/state/delaware) (38)
- [Florida](https://statecompanyindex.com/state/florida) (198)
- [Georgia](https://statecompanyindex.com/state/georgia) (89)
- [Hawaii](https://statecompanyindex.com/state/hawaii) (96)
- [Idaho](https://statecompanyindex.com/state/idaho) (57)
- [Illinois](https://statecompanyindex.com/state/illinois) (188)
- [Indiana](https://statecompanyindex.com/state/indiana) (76)
- [Iowa](https://statecompanyindex.com/state/iowa) (27)
- [Kansas](https://statecompanyindex.com/state/kansas) (52)
- [Kentucky](https://statecompanyindex.com/state/kentucky) (120)
- [Louisiana](https://statecompanyindex.com/state/louisiana) (12)
- [Maine](https://statecompanyindex.com/state/maine) (7)
- [Maryland](https://statecompanyindex.com/state/maryland) (38)
- [Massachusetts](https://statecompanyindex.com/state/massachusetts) (144)
- [Michigan](https://statecompanyindex.com/state/michigan) (207)
- [Minnesota](https://statecompanyindex.com/state/minnesota) (140)
- [Mississippi](https://statecompanyindex.com/state/mississippi) (18)
- [Missouri](https://statecompanyindex.com/state/missouri) (60)
- [Montana](https://statecompanyindex.com/state/montana) (12)
- [Nebraska](https://statecompanyindex.com/state/nebraska) (18)
- [Nevada](https://statecompanyindex.com/state/nevada) (22)
- [New Hampshire](https://statecompanyindex.com/state/new-hampshire) (10)
- [New Jersey](https://statecompanyindex.com/state/new-jersey) (73)
- [New Mexico](https://statecompanyindex.com/state/new-mexico) (9)
- [New York](https://statecompanyindex.com/state/new-york) (294)
- [North Carolina](https://statecompanyindex.com/state/north-carolina) (289)
- [North Dakota](https://statecompanyindex.com/state/north-dakota) (41)
- [Ohio](https://statecompanyindex.com/state/ohio) (130)
- [Oklahoma](https://statecompanyindex.com/state/oklahoma) (56)
- [Oregon](https://statecompanyindex.com/state/oregon) (397)
- [Pennsylvania](https://statecompanyindex.com/state/pennsylvania) (82)
- [Rhode Island](https://statecompanyindex.com/state/rhode-island) (65)
- [South Carolina](https://statecompanyindex.com/state/south-carolina) (5)
- [South Dakota](https://statecompanyindex.com/state/south-dakota) (26)
- [Tennessee](https://statecompanyindex.com/state/tennessee) (48)
- [Texas](https://statecompanyindex.com/state/texas) (191)
- [Utah](https://statecompanyindex.com/state/utah) (174)
- [Vermont](https://statecompanyindex.com/state/vermont) (7)
- [Virginia](https://statecompanyindex.com/state/virginia) (48)
- [Washington](https://statecompanyindex.com/state/washington) (135)
- [West Virginia](https://statecompanyindex.com/state/west-virginia) (18)
- [Wisconsin](https://statecompanyindex.com/state/wisconsin) (135)
- [Wyoming](https://statecompanyindex.com/state/wyoming) (19)

## Industries
- [Technology](https://statecompanyindex.com/industry/technology) (339)
- [Finance](https://statecompanyindex.com/industry/finance) (396)
- [Healthcare](https://statecompanyindex.com/industry/healthcare) (186)
- [Retail](https://statecompanyindex.com/industry/retail) (446)
- [Manufacturing](https://statecompanyindex.com/industry/manufacturing) (313)
- [Energy](https://statecompanyindex.com/industry/energy) (210)
- [Media](https://statecompanyindex.com/industry/media) (202)
- [Real Estate](https://statecompanyindex.com/industry/real-estate) (70)
- [Transportation](https://statecompanyindex.com/industry/transportation) (191)
- [Food and Beverage](https://statecompanyindex.com/industry/food-and-beverage) (379)
- [Telecom](https://statecompanyindex.com/industry/telecom) (78)
- [Aerospace Defense](https://statecompanyindex.com/industry/aerospace-defense) (112)
- [Professional Services](https://statecompanyindex.com/industry/professional-services) (59)
- [Consumer Goods](https://statecompanyindex.com/industry/consumer-goods) (148)

## Provenance and limits
- Sources: SEC EDGAR (public domain), Wikidata (CC0), Wikipedia facts, official company sites.
- No licensed firmographic data is used. Descriptions are original, not copied from Wikipedia.
- Unresolved fields are null, never invented. Volatile figures carry a date or are omitted.