US State Business Entity Registry API (Unofficial)

Search registered businesses in Colorado, Connecticut and New York and download them as JSON, CSV or Excel, or read them through the Apify API. No account or API key is needed.

• Search by entity name, formation date, city, ZIP code, entity category (LLC, corporation, nonprofit, partnership, cooperative) and status, in one or more states at once.
• Look up by ID: Colorado entity IDs, Connecticut account numbers or New York DOS IDs, up to 1,000 per run.
• Follow new registrations: set formedFrom and sort by newest. All three registries are updated daily (CO, CT) or regularly (NY).
• Per row: registry state, entity ID, name, entity type and category, domestic or foreign, jurisdiction of formation, status, active flag, formation date, city, state and ZIP of the business address, plus NAICS code, dissolution date and annual report due date where Connecticut publishes them.

Good for know-your-business checks, verifying that a company exists and is in good standing, market sizing, new-business statistics by city or industry, and enriching your own company lists with registry IDs.

The data comes from three state open-data portals, read through their keyless public APIs: the Colorado Department of State's business entity dataset on data.colorado.gov, the Connecticut Secretary of the State's business registry on data.ct.gov, and the New York Department of State's active corporations dataset on data.ny.gov.

Entity data only. No registered agents, officers, CEOs, owners or other people's names, no email addresses or phone numbers, and no street addresses. Corporations sole, name reservations and other single-person or non-entity records are withheld.

What data can you extract?

Field	Meaning
state, entityId, name	Registry (CO, CT, NY), the registry's ID and the registered name
entityType, entityCategory	Entity type as published (e.g. DLLC, LLC, DOMESTIC BUSINESS CORPORATION) and a broad category (llc, corporation, nonprofit, partnership, cooperative, other)
domestic, jurisdictionOfFormation	Formed in this state or registered from elsewhere, and where it was formed
status, active, subStatus	Status as published (e.g. Good Standing, Delinquent, Active, Dissolved) and whether the entity currently exists
formationDate, dissolutionDate, annualReportDueDate	Formation or registration date; Connecticut dissolution and annual report due dates
naicsCode, naicsDescription, totalAuthorizedShares	Connecticut only: industry code reported by the business and authorized shares
city, businessState, zip, country, county	City, state and 5-digit ZIP of the business address (no street); New York county
sourceDataset, sourceRecordUrl, licence, attribution, notice, retrievedAt	Source dataset page, an API link to the source record, licence or terms, attribution, a non-affiliation line, fetch time

How to use it

1. Click Try for free and keep the prefilled input (the 20 newest active registrations across CO, CT and NY), or set your own filters.
2. Run it. Rows appear in the Output tab.
3. With several states, maxResults is shared evenly between them; room one state does not use goes to the next.

Input examples

New LLCs registered this month in all three states:

{
    "states": ["CO", "CT", "NY"],
    "entityCategories": ["llc"],
    "formedFrom": "2026-10-01",
    "sort": "newest",
    "maxResults": 300
}

Bakeries in Denver and New Haven, including closed ones:

{
    "states": ["CO", "CT"],
    "name": "bakery",
    "cities": ["Denver", "New Haven"],
    "status": "any",
    "maxResults": 200
}

Look up entities by ID:

{
    "states": ["CO", "CT", "NY"],
    "entityIds": ["20268309909", "3539826", "8055241"],
    "status": "any"
}

Output example

{
    "state": "CT",
    "entityId": "3539826",
    "name": "Smartbuys LLC",
    "entityType": "LLC",
    "entityCategory": "llc",
    "domestic": true,
    "jurisdictionOfFormation": "Connecticut",
    "status": "Active",
    "active": true,
    "subStatus": null,
    "formationDate": "2026-10-25",
    "dissolutionDate": null,
    "annualReportDueDate": "2027-03-31",
    "naicsCode": "455219",
    "naicsDescription": "All Other General Merchandise Retailers",
    "totalAuthorizedShares": null,
    "city": "Waterbury",
    "businessState": "CT",
    "zip": "06710",
    "country": "United States",
    "county": null,
    "sourceDataset": "https://data.ct.gov/d/n7gp-d28j",
    "sourceRecordUrl": "https://data.ct.gov/resource/n7gp-d28j.json?accountnumber=3539826",
    "licence": "Public Domain (dataset licence on data.ct.gov); Connecticut Open Data Portal Terms of Use apply.",
    "attribution": "Source: Connecticut Secretary of the State, Business Services Division, \"Connecticut Business Registry - Business Master\" (https://data.ct.gov/d/n7gp-d28j), Public Domain, provided \"as is\" without warranty. Changed by this Actor: fields selected and renamed; email, mailing and street address fields, owner characteristics and name reservations removed.",
    "notice": "Unofficial. Not affiliated with or endorsed by the Colorado Department of State, the Connecticut Secretary of the State or the New York Department of State.",
    "retrievedAt": "2026-10-26T13:36:34.458Z"
}

How much does it cost?

• $0.01 per run start plus $2 per 1,000 entities saved ($0.002 each, the entity event). Example: 1,000 entities = $0.01 + $2 = $2.01.
• You pay only for rows that are saved. Withheld, filtered and duplicate records are free.
• Set Maximum cost per run when you start a run; the Actor stops cleanly when it reaches your cap. The minimum is $0.05, enough for 20 entities.

Privacy: entity data only

• No people. Registered agent names and addresses (CO), CEO, registered agent and service-of-process names and addresses (NY) are never requested from the source: every request lists only the columns this Actor outputs.
• No contact details. Connecticut's business email addresses are never requested. No phone numbers exist in these datasets.
• No street addresses. Only city, state and 5-digit ZIP of the business address are returned. Many small businesses register at a home address, so street lines, suites, mailing addresses and records addresses are never requested.
• No ZIP code where the entity is likely one or a few people: general partnerships, limited liability partnerships and professional service corporations or LLCs.
• Entities named after a person are left out entirely, e.g. "JOHN SMITH LLC" or "JANE DOE, M.D., P.C.". The name check is a heuristic and errs on the side of leaving rows out; withheld rows are free.
• Also withheld entirely: corporations sole (an office held by one person), Connecticut name reservations and rejected filings, New York name reservations and designations, and any entity type this Actor does not recognise.
• No owner characteristics. Connecticut's woman-, veteran-, minority-, disability- and LGBTQI-owned flags and map coordinates are never requested.
• Name searches match the entity's own registered name only.

Limits

• Three states: Colorado, Connecticut and New York. Other states do not publish their registries as keyless open data.
• New York lists active entities only (the dataset is a monthly snapshot of active corporations, LLCs and partnerships), so status = any adds inactive entities for CO and CT only.
• Up to 100,000 entities per run (maxResults maximum). For more, split the work by date range or state.
• Name and city filters are exact-text matches on what the registry published. City names vary in spelling (e.g. "SanDimas"), so check a few spellings for complete results.
• Entity categories are derived by this Actor from each registry's type codes. Colorado sometimes appends the status to the name (e.g. "…, Delinquent August 1, 2025"); names are returned as published.
• Requests are paced at one per second (the portals' crawl delay), with up to 1,000 records each, so 10,000 entities take well under a minute.

FAQ

Do I need an API key? No. The three open-data APIs are keyless.

How fresh is the data? Colorado and Connecticut update their datasets daily; New York publishes a monthly snapshot. Each row has retrievedAt, and sourceRecordUrl returns the record straight from the source.

Can I get officers, owners or registered agents? No. This Actor returns entity data only, by design.

Why is the ZIP code empty for some rows? The entity is a partnership or professional firm, or its name looks like a person's name. See Privacy.

Is this the state's own service? No. This is an independent tool that reads public open data. Unofficial. Not affiliated with or endorsed by the Colorado Department of State, the Connecticut Secretary of the State or the New York Department of State.

Data sources and licences

• Colorado: "Business Entities in Colorado" (https://data.colorado.gov/d/4ykn-tg5h), Colorado Department of State, published on the Colorado Information Marketplace. Licence: Public Domain (dataset metadata). The State of Colorado Terms of Service (https://data.colorado.gov/terms) ask applications using the data to include this disclaimer:

  The data made available here has been modified for use from its original source, which is the State of Colorado. THE STATE OF COLORADO MAKES NO REPRESENTATIONS OR WARRANTY AS TO THE COMPLETENESS, ACCURACY, TIMELINESS, OR CONTENT OF ANY DATA MADE AVAILABLE THROUGH THIS SITE. THE STATE OF COLORADO EXPRESSLY DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. The data is subject to change as modifications and updates are complete. It is understood that the information contained in the Web feed is being used at one's own risk.

• Connecticut: "Connecticut Business Registry - Business Master" (https://data.ct.gov/d/n7gp-d28j), Office of the Secretary of the State, Business Services Division, published on the Connecticut Open Data Portal. Licence: Public Domain (dataset metadata). Provided "as is" under the portal's Terms of Use (https://data.ct.gov/terms); the State makes no warranty as to accuracy, completeness or timeliness.

• New York: "Active Corporations: Beginning 1800" (https://data.ny.gov/d/n9v6-gdp6), New York State Department of State, Division of Corporations, published on data.ny.gov under the OPEN-NY Terms of Use (https://data.ny.gov/download/77gx-ii52/application/pdf). The dataset states no separate licence.

• New York terms: NY data is used under the OPEN-NY Terms of Use; if the State revokes access, NY will be dropped.

This Actor selects and renames fields and removes person, contact and street-address data; it does not change the remaining values. Unofficial. Not affiliated with or endorsed by the Colorado Department of State, the Connecticut Secretary of the State or the New York Department of State.