> 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/4121/ # SIC code 4121: Taxicab service The companies classified under SIC 4121, 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 4121 is the Standard Industrial Classification code for Taxicab service, in division E (Transportation, Communications, Electric, Gas, and Sanitary Services). The companies counted under it are mostly very small: 76% have 50 or fewer employees. ## What is SIC 4121? SIC 4121 is the Standard Industrial Classification code for Taxicab service. It sits in division E, Transportation, Communications, Electric, Gas, and Sanitary Services. 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 485310 (67%). - 76% of the companies counted have 50 or fewer employees, and the middle one is in the 11 to 50 range. - The largest group is headquartered in the United States (44%). Within the US, New York is the biggest state (12%). - Most were founded in the 2010s (25%), then the 2000s (21%). **Figure: How SIC 4121 is built.** The code 4121 split into its parts: major group 41, then industry group and industry. It sits in division E, Transportation, Communications, Electric, Gas, and Sanitary Services. *The four digits of SIC 4121.* ## Which companies are classified under SIC 4121? The biggest by headcount range include Tawasul Transport L.L.C, Addison Lee, Ztrip, Green Tomato Cars and Panther Taxis. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Tawasul Transport L.L.C | Abu Dhabi, United Arab Emirates | 1,001 to 5,000 | | Addison Lee | London, United Kingdom | 501 to 1,000 | | Ztrip | Kansas City, MO | 501 to 1,000 | | Green Tomato Cars | London, United Kingdom | 201 to 500 | | Panther Taxis | Cambridge, United Kingdom | 201 to 500 | | Windsor Cars | Windsor, United Kingdom | 201 to 500 | | Whc Worldwide | Kansas City, United States | 201 to 500 | | Vale Cars London | London, United Kingdom | 201 to 500 | | Amber Cars | Leeds, United Kingdom | 201 to 500 | | Blitz Exclusive | Venezia, Venezuela | 51 to 200 | | Lähitaksi | Helsinki, Finland | 51 to 200 | | Menevä | Helsinki, Finland | 51 to 200 | | Silver Top Taxi Service | Collingwood, Australia | 51 to 200 | | Atlas Cars Of London | London, United Kingdom | 51 to 200 | | Stanley Travel | Stanley, United Kingdom | 51 to 200 | | Saltire Private Hire | Glasgow, United Kingdom | 51 to 200 | | Carrot Cars | London, United Kingdom | 51 to 200 | | Vip Taxi | Tucson, AZ | 51 to 200 | | Associated Taxis | Bishops Stortford, United Kingdom | 51 to 200 | | Vip Break | Feltham, United Kingdom | 51 to 200 | | Yellow London Taxi | London, Canada | 51 to 200 | | Lockerby Taxi | Sudbury, Canada | 51 to 200 | | Camcab | Cambridge, United Kingdom | 51 to 200 | | Vancouver Taxi | Vancouver, Canada | 51 to 200 | | Cab Ex Cargo | Laredo, TX | 51 to 200 | 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 4121 companies based? The largest groups are headquartered in the United States (44%), the United Kingdom (37%) and Canada (7%). **Figure: Where companies in SIC 4121 are based.** Bars for the share of counted companies in SIC 4121 headquartered in each country: United States 44%, United Kingdom 37%, Canada 7%, Finland 2%, Australia 2%, Germany 2%, Netherlands 2%. *Share of counted companies in SIC 4121 by headquarters country.* Within the United States, New York (12%), California (8%) and Florida (8%) lead. **Figure: US headquarters of companies in SIC 4121, by state.** A tile map of the United States shaded by the share of counted US companies in SIC 4121 headquartered in each state. The largest are New York 12%, California 8%, Florida 8%. *Share of counted US companies in SIC 4121 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for SIC 4121? 76% of them have 50 or fewer employees, and the middle one is in the 11 to 50 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in SIC 4121.** Seven columns for the share of counted companies in SIC 4121 in each employee range: 11 to 50 76%, 51 to 200 20%, 201 to 500 3%, 501 to 1,000 1%, 1,001 to 5,000 0%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in SIC 4121 in each employee range.* ## How SIC 4121 compares - 76% of companies in SIC 4121 have 50 or fewer employees, against 60% across all NAICS codes on this site. - Wisconsin holds 7% of the US companies here, against 2% across all NAICS codes on this site. ## SIC 4121 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 4121. | Code | Title | Share of counted | | --- | --- | --- | | [NAICS 485310](https://enrich.chat/naics/485310/) | Taxi and Ridesharing Services | 67% | | NAICS 485999 | All Other Transit and Ground Passenger Transportation | 15% | | NAICS 532111 | Passenger Car Rental | 9% | ## How do SIC 4121 companies describe themselves? A code is assigned by classification, and a company does not choose its own, so the label a company uses for itself can differ. The most common labels here are Truck Transportation (58%), Transportation/Trucking/Railroad (14%) and Hospitality (11%). **Figure: How companies in SIC 4121 describe themselves.** Bars for the share of counted companies in SIC 4121 that give each industry on their public profile: Truck Transportation 58%, Transportation/Trucking/Railroad 14%, Hospitality 11%, Taxi and Limousine Services 7%. *Share of counted companies in SIC 4121 by the industry they list on their public profile.* ## 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 4121 companies? The people to talk to are usually operations, IT and procurement 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 4121 (Taxicab service) ``` ### 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 operations, IT and procurement leaders at companies with SIC code 4121, 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 ``` ## Frequently asked questions ### What is SIC code 4121? SIC 4121 is the code for Taxicab service, in division E (Transportation, Communications, Electric, Gas, and Sanitary Services). ### What is the NAICS code for SIC 4121 (Taxicab service)? 67% of the companies counted carry NAICS 485310 (Taxi and Ridesharing Services), but the two systems do not map one to one. ### Which companies are classified under SIC 4121? The biggest by headcount range include Tawasul Transport L.L.C, Addison Lee, Ztrip, Green Tomato Cars and Panther Taxis. The page lists 25 with links to their profiles where we have them. ### How big are the companies in SIC 4121? 76% have 50 or fewer employees, and the middle one is in the 11 to 50 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 4121 companies ```text Use www.enrich.chat to find the operations, IT and procurement leaders at companies with SIC code 4121, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)