Number of Quest Diagnostics clinics in the United States in 2026

Last updated on July 29, 2026
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How many Quest Diagnostics clinics are there in the United States?

There are 6,092 Quest Diagnostics clinics in the United States as of July 29, 2026. The state and territory with the most number of Quest Diagnostics locations in the US is Texas, with 741 clinics, which is about 12% of all Quest Diagnostics clinics in the US.

6,092
Locations
52
States and Territories
2,556
Cities
Map of Quest Diagnostics clinics in the United States


How can I download a list of Quest Diagnostics clinics in the United States into Excel?

You can download the complete list of 6,092 Quest Diagnostics locations data as an Excel file, along with geo-coded addresses, phone numbers and open hours from our data store.

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Top 10 States and Territories with the most Quest Diagnostics clinics

Texas

741 (12%)

A clinic for every 39,131 people, in Texas with about 12% of the total number of Quest Diagnostics clinics


California

632 (10%)

A clinic for every 62,519 people, in California with about 10% of the total number of Quest Diagnostics clinics


Florida

581 (10%)

A clinic for every 36,967 people, in Florida with about 10% of the total number of Quest Diagnostics clinics


State / Territory Number of clinics Population Population per clinic
Texas 741 (12%) 29.00M 39.13K
California 632 (10%) 39.51M 62.52K
Florida 581 (10%) 21.48M 36.97K
New York 376 (6%) 19.45M 51.74K
Ohio 265 (4%) 11.69M 44.11K
Pennsylvania 243 (4%) 12.80M 52.68K
Georgia 232 (4%) 10.62M 45.76K
Tennessee 222 (4%) 6.83M 30.76K
New Jersey 197 (3%) 8.88M 45.09K
North Carolina 188 (3%) 10.49M 55.79K

There are Quest Diagnostics clinics in 54 states and territories in the United States

States and Territories without any Quest Diagnostics clinics

These states and territories do not have any Quest Diagnostics clinics

  • American Samoa
  • Guam
  • U.S. Virgin Islands
  • Northern Mariana Islands

There are 4 states and territories without Quest Diagnostics clinics in the United States

Cities with the most number of Quest Diagnostics clinics in the United States

City State / Territory Number of Locations
Houston Texas 65
New York New York 50
Brooklyn New York 44
San Antonio Texas 39
Jacksonville Florida 39
Dallas Texas 37
Oklahoma City Oklahoma 28
Austin Texas 27
Orlando Florida 27
Las Vegas Nevada 27

Download the complete database of Quest Diagnostics Locations in USA

You can download the full list of Quest Diagnostics locations used for this analysis from our data store. Here is a random sample of 10 records for you to look at the fields and the data that we provide.

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Name Street City State / Territory Zip Code Phone Latitude Longitude Address Country Last Updated Date
Associated Clinical Laboratories - Acl Yorktown 2501 W 12th St Suite B Erie PA 16505 814-459-4991 42.101301 -80.1347793 2501 W 12th St Suite B, Erie, PA, 16505 USA 2026-07-29
Wabash County Health Department - Questselect Members Only 130 West 7th Street Mount Carmel IL 62863 618-263-3873 38.4130086 -87.7638897 130 West 7th Street, Mount Carmel, IL, 62863 USA 2026-07-29
Fastmed - Hargett St 501 N Harrington St Raleigh NC 27603 984-255-2107 35.7879018 -78.6449038 501 N Harrington St, Raleigh, NC, 27603 USA 2026-07-29
Citymd Of Commack 6500 Jericho Tpke Commack NY 11725 631-858-2273 40.8417953 -73.2924524 6500 Jericho Tpke, Commack, NY, 11725 USA 2026-07-29
Citymd Of Norwood 3494 Jerome Ave Bronx NY 10467 718-571-9282 40.882333 -73.8812785 3494 Jerome Ave, Bronx, NY, 10467 USA 2026-07-29
Quest Diagnostics - Hilliard Health - All Seasons Dr 4343 All Seasons Dr Ste 200 Hilliard OH 43026 740-908-0306 40.036065 -83.1332254 4343 All Seasons Dr Ste 200, Hilliard, OH, 43026 USA 2026-07-29
Quest Diagnostics - Ashland - Ohio Healthway 1720 Ohiohealth Way Ste 1200 Ashland OH 44805 567-425-1575 40.860528 -82.27809 1720 Ohiohealth Way Ste 1200, Ashland, OH, 44805 USA 2026-07-29
Mercy Health - Warren Occ Hlth 5000 E Market St Ste 18 Warren OH 44484 330-306-5030 41.2366905 -80.7533245 5000 E Market St Ste 18, Warren, OH, 44484 USA 2026-07-29
Mercy Health - N Ridgeville Occ Hlth 39263 Center Ridge Rd North Ridgeville OH 44039 440-366-5577 41.3807 -82.0649619 39263 Center Ridge Rd, North Ridgeville, OH, 44039 USA 2026-07-29
Quest Diagnostics - Lansdale 545 S Broad St Lansdale PA 19446 215-855-5558 40.23502894 -75.29014665 545 S Broad St, Lansdale, PA, 19446 USA 2026-07-29

* Open hours are not displayed here as it is too big to show on a reasonably sized screen.

Disclaimer: Brand logos are used for visual representation only and do not imply endorsement or affiliation.


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