CO Business Entities - Registry & Filing History

Colorado's business-entity register and the Secretary of State's complete filing history for it, on one exact key.

Every entity in Colorado has an entity id. That id is the same in the register and in the 21.6-million-row transaction history, so a company's current record and every filing it ever made line up exactly - no name matching, no fuzzy joins.

Low cost

From $0.0001 per record. Pay-per-event: you are charged per record delivered, and nothing for the query.

What you get

Corpus	Rows	Row is
entities	3,108,712	one registered entity
history	21,622,207	one filing against an entity

The history covers 4,411,219 distinct entity ids against the register's 3,108,712 - it reaches entities that have since been dissolved or purged. Ask for an id and you get the entire filing record of a company that no longer exists in the register at all.

The register (entities)

• Status - 15 values: Good Standing (1,026,907), Delinquent (1,143,709), Voluntarily Dissolved (596,652), Administratively Dissolved (157,833), Withdrawn, Noncompliant, Revoked, Judicially Dissolved, Merged, Converted and more.
• Type - 33 exact Colorado codes: DLLC (2,098,353), DPC (549,606), DNC, FLLC, FPC, DLP, DLLP, FNC, GP, and the rest (D domestic / F foreign; PC profit corp / NC nonprofit corp / LLC / LP).
• Formation date and jurisdiction of formation - 1,374 distinct jurisdictions, CO 2,834,914 and DE 83,742 among them.
• Principal and mailing address - full 5-part address each.
• Registered agent - a person or an organization, with their own address, principal and mailing.

The filing history (history)

Every filing under 253 distinct types: File Report (10,981,507), Form a Limited Liability Company (LLC) (2,112,164), Statement of Change Changing the Registered Agent Information (589,878), Statement Curing Delinquency (583,126), Dissolve a Limited Liability Company (446,666), Amendment (410,232), Form a Profit Corporation (319,289), Articles of Incorporation (292,911), name reservations, trade names, trademarks, reinstatements - with the Secretary of State's own comment on the filing, where the substance lives:

Amend Articles of Organization for an LLC - "Change of entity name from Azer Auto Sales, LLC" Amendment - "REDOMESTICATION TO STATE OF TEXAS" Statement of Change Changing the Principal Office Address - "Principal address changed"

Two dates per filing - received and effective - so you can follow a company's corporate history in order, or pull the daily change stream with receivedFrom.

Modes

• rows (default) - records matching your filters.
• aggregate - one count row per group: by status, type, principal state, jurisdiction of formation, country, or filing type.
• profile - one entity's register row plus its entire filing history, given an entityId. See the example below.

Examples

A company's complete corporate history - mode=profile, entityId=20171940013 returns 12 records: the entity plus all 11 of its filings:

Voyage Auto Sales, LLC / Good Standing / DLLC / formed 2017-12-21
  2026-09-11  Amend Articles of Organization for an LLC   "Change of entity name from Azer Auto Sales, LLC"
  2026-08-24  Statement Curing Delinquency                "Change in registered agent information"
  2024-11-01  File Report                                 "Principal address changed, Change in registered agent information"
  2023-08-28  Statement Curing Delinquency
  2022-04-24  File Report                                 "Change of Registered Agent Address / Change of Entity Address"
  2021-04-11  File Report
  2020-02-26  File Report
  2019-02-21  File Report                                 "Removed agent mailing address; / Change of Registered Agent Address"
  2019-01-05  Statement of Change Changing the Principal Office Address   "Principal address changed;"
  2018-02-15  Statement of Change Changing the Principal Office Address   "Removed entity mailing address;Principal address changed;"
  2017-12-21  Form a Limited Liability Company (LLC)

The name change is visible in the record itself: filed in 2017 as Azer Auto Sales, LLC, renamed to Voyage Auto Sales, LLC in 2026.

Who filed what last week - corpus=history, receivedFrom=2026-09-04, historyType=Dissolve.

Delinquent Colorado LLCs - status=Delinquent, entityType=DLLC.

Where companies incorporate - mode=aggregate, groupBy=jurisdiction.

A note on the names

The register glues the status onto the name once an entity leaves good standing:

entityNameRaw:  SOUTHWEST CONTRACTING, LLC, Delinquent May 1, 2016
entityName:     SOUTHWEST CONTRACTING, LLC

985,161 names carry a Delinquent suffix and 770,034 a Dissolved one - more than half the register. Filtering or rendering the raw column gives you that noise as if it were the company's name. Every record here carries both: entityName with the suffix stripped when it matches the Secretary of State's own pattern, and entityNameRaw exactly as stored.

Source

Counts below are a live snapshot - the register is refreshed daily, so the exact figures move by a few hundred rows between reads. The order of magnitude and the ratios are stable.

Colorado Secretary of State, published on data.colorado.gov as Business Entities in Colorado and Business Entity Transaction History - public open data, no login and no key. Updated daily: the transaction feed takes 2,400-3,200 filings on a weekday (under 2,000 at a weekend), and 570-730 new entities are formed on a weekday.

The register is messier than a company list suggests, and the cleanup is done for you. The Secretary of State writes the status into the company name the moment an entity leaves good standing - SOUTHWEST CONTRACTING, LLC, Delinquent May 1, 2016 - on more than half the register; that suffix is separated out here rather than handed to you as if it were part of the name. And the history reaches further than the register: 4,411,219 entity ids have filings against them against 3,108,712 registered entities, so a lookup by id returns the whole corporate record of a company that has since dissolved or been purged.

Output

Every record carries the same key set regardless of corpus or mode - recordType, entityId, the entity fields, the filing fields, and the aggregate columns (groupKey, groupCount, groupBy) which are "" outside aggregate mode.

Related actors

• CO UCC Filings - the secured-lien register for these same Colorado businesses.
• CO Charity Registry - the charitable-solicitation register, with 990-style financials.
• PA Registered Businesses - the same idea for Pennsylvania, keyed per officer.