> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/sic/6321/ # SIC code 6321: Accident and health insurance carrier The companies classified under SIC 6321, where they are based, how big they are and how the code maps to NAICS. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** SIC 6321 is the Standard Industrial Classification code for Accident and health insurance carrier, in division H (Finance, Insurance, and Real Estate). The companies counted under it are mixed in size, with the middle one in the 51 to 200 range. ## What is SIC 6321? SIC 6321 is the Standard Industrial Classification code for Accident and health insurance carrier. It sits in division H, Finance, Insurance, and Real Estate. The first two digits name the major group, and the last two narrow it to a single industry. Most of the companies counted also carry NAICS 524114 (81%). - 28% of the companies counted have 50 or fewer employees, and the middle one is in the 51 to 200 range. - The largest group is headquartered in the United States (66%). Within the US, Florida is the biggest state (11%). - Most were founded in the 1990s (26%), then the 2010s (26%). **Figure: How SIC 6321 is built.** The code 6321 split into its parts: major group 63, then industry group and industry. It sits in division H, Finance, Insurance, and Real Estate. *The four digits of SIC 6321.* ## Which companies are classified under SIC 6321? The biggest by headcount range include Humana, Liberty Mutual Insurance, Highmark, QBE Insurance and Healthhelp. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [Humana](https://enrich.chat/company/humana/) | Louisville, KY | 10,001+ | | [Liberty Mutual Insurance](https://enrich.chat/company/liberty-mutual-insurance/) | Boston, MA | 10,001+ | | [Highmark](https://enrich.chat/company/highmark/) | Pittsburgh, PA | 10,001+ | | Healthhelp | Houston, TX | 10,001+ | | Kemper | Chicago, IL | 5,001 to 10,000 | | Caresource | Dayton, OH | 1,001 to 5,000 | | Jubilee Life Insurance | Karachi, Pakistan | 1,001 to 5,000 | | Suva | Luzern, Switzerland | 1,001 to 5,000 | | Premera Blue Cross | Mountlake Terrace, WA | 1,001 to 5,000 | | American Fidelity | Oklahoma City, OK | 1,001 to 5,000 | | Aia Australia | Melbourne, Australia | 1,001 to 5,000 | | Allianz Suisse | Wallisellen, Switzerland | 1,001 to 5,000 | | Triwest Healthcare Alliance | Phoenix, AZ | 1,001 to 5,000 | | Hbf Health | Perth, Australia | 1,001 to 5,000 | | Select Health | Murray, UT | 1,001 to 5,000 | | Assura | Pully, Switzerland | 1,001 to 5,000 | | Viactiv Krankenkasse | Bochum, Germany | 1,001 to 5,000 | | Liberty General Insurance | Lower Parel Mumbai Maharashtra, India | 501 to 1,000 | | Community Health Choice | Houston, TX | 501 to 1,000 | | Sanitas Krankenversicherung | Zurich, Switzerland | 501 to 1,000 | | Mass General Brigham Health Plan | Somerville, MA | 501 to 1,000 | | Viva Health | Birmingham, AL | 501 to 1,000 | | Accident Fund Insurance Company Of America | Lansing, MI | 501 to 1,000 | | Simply Healthcare Plans | Miami, FL | 501 to 1,000 | | Saif | Salem, OR | 501 to 1,000 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are SIC 6321 companies based? The largest groups are headquartered in the United States (66%), Germany (15%) and Switzerland (6%). **Figure: Where companies in SIC 6321 are based.** Bars for the share of counted companies in SIC 6321 headquartered in each country: United States 66%, Germany 15%, Switzerland 6%, Australia 5%. *Share of counted companies in SIC 6321 by headquarters country.* Within the United States, Florida (11%), New York (10%) and Texas (10%) lead. **Figure: US headquarters of companies in SIC 6321, by state.** A tile map of the United States shaded by the share of counted US companies in SIC 6321 headquartered in each state. The largest are Florida 11%, New York 10%, Texas 10%. *Share of counted US companies in SIC 6321 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for SIC 6321? 28% of them have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in SIC 6321.** Seven columns for the share of counted companies in SIC 6321 in each employee range: 11 to 50 28%, 51 to 200 25%, 201 to 500 18%, 501 to 1,000 12%, 1,001 to 5,000 12%, 5,001 to 10,000 2%, 10,001+ 4%. *Share of counted companies in SIC 6321 in each employee range.* ## How old are SIC 6321 companies? Most were founded in the 1990s (26%), then the 2010s (26%). **Figure: When companies in SIC 6321 were founded.** Eight columns for the share of counted companies in SIC 6321 founded in each era: Before 1960 24%, 1960s 4%, 1970s 6%, 1980s 6%, 1990s 26%, 2000s 8%, 2010s 26%, 2020s 1%. *Share of counted companies in SIC 6321 by the era they were founded in, for the ones that list a founding year.* ## How SIC 6321 compares - 28% of companies in SIC 6321 have 50 or fewer employees, against 60% across all NAICS codes on this site. - New York holds 10% of the US companies here, against 6% across all NAICS codes on this site. ## SIC 6321 and the NAICS system NAICS replaced SIC as the U.S. federal standard in 1997, but the two do not line up one to one. These are the NAICS codes seen most among the companies counted under SIC 6321. | Code | Title | Share of counted | | --- | --- | --- | | NAICS 524114 | Direct Health and Medical Insurance Carriers | 81% | | [NAICS 524210](https://enrich.chat/naics/524210/) | Insurance Agencies and Brokerages | 11% | | [NAICS 541511](https://enrich.chat/naics/541511/) | Custom Computer Programming Services | 2% | ## Where SIC codes come from SIC was created in the 1930s and is now historical: the U.S. government replaced it with NAICS in 1997. It is still widely used, and the SEC still assigns a SIC code to every company that files on EDGAR. The full list is in the [SIC manual](https://www.osha.gov/data/sic-manual) that OSHA hosts, and the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html) explains how the two relate. ## How do you reach the people at SIC 6321 companies? The people to talk to are usually finance, operations and technology leaders. You can build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with SIC code 6321 (Accident and health insurance carrier) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the finance, operations and technology leaders at companies with SIC code 6321, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## More to explore Other SIC codes in major group 63: [SIC 6324: Hospital and medical service plan](https://enrich.chat/sic/6324/)[SIC 6371: Pension, health and welfare fund](https://enrich.chat/sic/6371/) ## Frequently asked questions ### What is SIC code 6321? SIC 6321 is the code for Accident and health insurance carrier, in division H (Finance, Insurance, and Real Estate). ### What is the NAICS code for SIC 6321 (Accident and health insurance carrier)? 81% of the companies counted carry NAICS 524114 (Direct Health and Medical Insurance Carriers), but the two systems do not map one to one. ### Which companies are classified under SIC 6321? The biggest by headcount range include Humana, Liberty Mutual Insurance, Highmark, QBE Insurance and Healthhelp. The page lists 25 with links to their profiles where we have them. ### How big are the companies in SIC 6321? 28% have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. ### Is SIC still used? Yes. The U.S. government replaced SIC with NAICS in 1997, but SIC codes are still common in business databases, and the SEC still uses them on EDGAR. ## Try this prompt Find the people at SIC 6321 companies ```text Use www.enrich.chat to find the finance, operations and technology leaders at companies with SIC code 6321, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [SIC 6324](https://enrich.chat/sic/6324/) - [SIC 6371](https://enrich.chat/sic/6371/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)