> 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/naics/611310/ # NAICS code 611310: Colleges, Universities, and Professional Schools The organizations classified under NAICS 611310, where they are based, how big they are and how the code maps to SIC. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** NAICS 611310 is the code for Colleges, Universities, and Professional Schools, in sector 61: Educational Services. The organizations counted under it are mixed in size, with the middle one in the 201 to 500 range, and 82% are headquartered in the United States. ## What is NAICS 611310? NAICS 611310 is the code for Colleges, Universities, and Professional Schools. It belongs to sector 61: Educational Services. NAICS, the North American Industry Classification System, is the standard U.S. government agencies use to sort businesses by what they mainly do, and each digit narrows the category. Most of the organizations counted also carry SIC 8221, College and university, in the older SIC system (99%). - 11% of the organizations counted have 50 or fewer employees, and the middle one is in the 201 to 500 range. - The largest group is headquartered in the United States (82%). Within the US, California is the biggest state (10%). - Most were founded in the before 1960 (67%), then the 1960s (9%). **Figure: How NAICS 611310 is built.** The code 611310 split into its parts: sector 61, then subsector, industry group, NAICS industry and U.S. industry. *The six digits of NAICS 611310. Each digit narrows the category.* ## Which organizations are classified under NAICS 611310? The biggest by headcount range include The University of Texas at Austin, Columbia University, University Of Illinois Urbana-Champaign, Monash University and University of Wisconsin-Madison. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [The University of Texas at Austin](https://enrich.chat/company/the-university-of-texas-at-austin/) | Austin, TX | 10,001+ | | University Of Illinois Urbana-Champaign | Champaign, IL | 10,001+ | | [University of Wisconsin-Madison](https://enrich.chat/company/university-of-wisconsin-madison/) | Madison, WI | 10,001+ | | [ETH Zürich](https://enrich.chat/company/eth-z-rich/) | Zurich, Switzerland | 10,001+ | | [University of Arizona](https://enrich.chat/company/university-of-arizona/) | Tucson, AZ | 10,001+ | | [University of California, Davis](https://enrich.chat/company/university-of-california-davis/) | Davis, CA | 10,001+ | | [The University of Chicago](https://enrich.chat/company/the-university-of-chicago/) | Chicago, IL | 10,001+ | | [UCI](https://enrich.chat/company/uci/) | Irvine, CA | 10,001+ | | Université Laval | Quebec, Canada | 10,001+ | | University Of Missouri-Columbia | Columbia, MO | 10,001+ | | [University of Utah](https://enrich.chat/company/university-of-utah/) | Salt Lake City, UT | 10,001+ | | [Emory University](https://enrich.chat/company/emory-university/) | Atlanta, GA | 10,001+ | | Tufts University | Medford, MA | 10,001+ | | Binghamton University | Binghamton, NY | 10,001+ | | Kean University | Union, NJ | 10,001+ | | University Of South Alabama | Mobile, AL | 10,001+ | | The University Of Texas System | Austin, TX | 10,001+ | | [University of Missouri System](https://enrich.chat/company/university-of-missouri-system/) | Columbia, MO | 10,001+ | | Texas Tech University System | Lubbock, TX | 10,001+ | | [Northeastern University](https://enrich.chat/company/northeastern-university/) | Boston, MA | 5,001 to 10,000 | | [Northwestern University](https://enrich.chat/company/northwestern-university/) | Evanston, IL | 5,001 to 10,000 | | [University of Colorado Boulder](https://enrich.chat/company/university-of-colorado-boulder/) | Boulder, CO | 5,001 to 10,000 | | [Princeton University](https://enrich.chat/company/princeton-university/) | Princeton, NJ | 5,001 to 10,000 | | Toronto Metropolitan University | Toronto, Canada | 5,001 to 10,000 | | Concordia University | Montreal, Canada | 5,001 to 10,000 | 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 NAICS 611310 organizations based? The largest groups are headquartered in the United States (82%), Canada (5%) and France (2%). **Figure: Where organizations in NAICS 611310 are based.** Bars for the share of counted organizations in NAICS 611310 headquartered in each country: United States 82%, Canada 5%, France 2%, Germany 1%, United Kingdom 1%, India 1%. *Share of counted organizations in NAICS 611310 by headquarters country.* Within the United States, California (10%), New York (8%) and Pennsylvania (7%) lead. **Figure: US headquarters of organizations in NAICS 611310, by state.** A tile map of the United States shaded by the share of counted US organizations in NAICS 611310 headquartered in each state. The largest are California 10%, New York 8%, Pennsylvania 7%. *Share of counted US organizations in NAICS 611310 by headquarters state. The three largest states are outlined.* ## How big are the organizations counted for NAICS 611310? 11% of them have 50 or fewer employees, and the middle one is in the 201 to 500 range. Companies with fewer than 11 employees are not counted. **Figure: Size of organizations in NAICS 611310.** Seven columns for the share of counted organizations in NAICS 611310 in each employee range: 11 to 50 11%, 51 to 200 17%, 201 to 500 24%, 501 to 1,000 17%, 1,001 to 5,000 21%, 5,001 to 10,000 6%, 10,001+ 4%. *Share of counted organizations in NAICS 611310 in each employee range.* ## How old are NAICS 611310 organizations? Most were founded in the before 1960 (67%), then the 1960s (9%). **Figure: When organizations in NAICS 611310 were founded.** Eight columns for the share of counted organizations in NAICS 611310 founded in each era: Before 1960 67%, 1960s 9%, 1970s 6%, 1980s 3%, 1990s 6%, 2000s 4%, 2010s 5%, 2020s 0%. *Share of counted organizations in NAICS 611310 by the era they were founded in, for the ones that list a founding year.* ## How NAICS 611310 compares - 11% of organizations in NAICS 611310 have 50 or fewer employees, against 60% across all NAICS codes on this site. - 5% were founded in 2010 or later, against 30% across all NAICS codes on this site. - Massachusetts holds 6% of the US companies here, against 3% across all NAICS codes on this site. ## NAICS 611310 and the SIC system NAICS replaced SIC in 1997, but the two do not line up one to one: companies filed under one NAICS code can carry several SIC codes. These are the ones seen most. | Code | Title | Share of counted | | --- | --- | --- | | SIC 8221 | College and university | 99% | ## Where NAICS codes come from NAICS is maintained by the U.S. Census Bureau with Canada and Mexico and revised every five years; the current edition is NAICS 2022. To check exactly what a code includes, search the [official NAICS index](https://www.census.gov/naics/) or read the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html). Pick a code by what a company mostly does, not by who it sells to. ## How do you reach the people at NAICS 611310 organizations? The people to talk to are usually administration, IT and finance leaders. You can build the list from this code 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 NAICS code 611310 (Colleges, Universities, and Professional Schools) ``` ### 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 administration, IT and finance leaders at companies with NAICS code 611310, 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 Others in sector 61: [NAICS 611110: Elementary and Secondary Schools](https://enrich.chat/naics/611110/)[NAICS 611620: Sports and Recreation Instruction](https://enrich.chat/naics/611620/)[NAICS 611691: Exam Preparation and Tutoring](https://enrich.chat/naics/611691/)[NAICS 611210: Junior Colleges](https://enrich.chat/naics/611210/)[NAICS 611692: Automobile Driving Schools](https://enrich.chat/naics/611692/) ## Frequently asked questions ### What is NAICS code 611310? NAICS 611310 is the code for Colleges, Universities, and Professional Schools, in sector 61: Educational Services. ### What is the SIC code for NAICS 611310 (Colleges, Universities, and Professional Schools)? 99% of the organizations counted carry SIC 8221 (College and university), but the two systems do not map one to one. ### Which organizations are classified under NAICS 611310? The biggest by headcount range include The University of Texas at Austin, Columbia University, University Of Illinois Urbana-Champaign, Monash University and University of Wisconsin-Madison. The page lists 25 with links to their profiles where we have them. ### Where are NAICS 611310 organizations based? The largest groups are headquartered in the United States (82%), Canada (5%) and France (2%). ### How big are the organizations in NAICS 611310? 11% have 50 or fewer employees, and the middle one is in the 201 to 500 range. Companies with fewer than 11 employees are not counted. ### Is NAICS 611310 the same as a SIC code? No. NAICS replaced SIC as the U.S. federal standard in 1997, and the two do not map one to one. The SIC code seen most among these companies is 8221. ## Try this prompt Find the people at NAICS 611310 organizations ```text Use www.enrich.chat to find the administration, IT and finance leaders at companies with NAICS code 611310, 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/)