Number of Quest Diagnostics clinics in the United States in 2026

Last updated on May 26, 2026
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How many Quest Diagnostics clinics are there in the United States?

There are 6,105 Quest Diagnostics clinics in the United States as of May 26, 2026. The state and territory with the most number of Quest Diagnostics locations in the US is Texas, with 726 clinics, which is about 12% of all Quest Diagnostics clinics in the US.

6,105
Locations
52
States and Territories
2,562
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 6,105 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

726 (12%)

A clinic for every 39,939 people, in Texas with about 12% of the total number of Quest Diagnostics clinics


California

627 (10%)

A clinic for every 63,018 people, in California with about 10% of the total number of Quest Diagnostics clinics


Florida

579 (9%)

A clinic for every 37,095 people, in Florida with about 9% of the total number of Quest Diagnostics clinics


State / Territory Number of clinics Population Population per clinic
Texas 726 (12%) 29.00M 39.94K
California 627 (10%) 39.51M 63.02K
Florida 579 (9%) 21.48M 37.09K
New York 379 (6%) 19.45M 51.33K
Ohio 267 (4%) 11.69M 43.78K
Pennsylvania 242 (4%) 12.80M 52.90K
Georgia 233 (4%) 10.62M 45.57K
Tennessee 229 (4%) 6.83M 29.82K
New Jersey 197 (3%) 8.88M 45.09K
Illinois 188 (3%) 12.67M 67.40K

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 66
New York New York 51
Brooklyn New York 44
San Antonio Texas 39
Jacksonville Florida 38
Dallas Texas 37
Oklahoma City Oklahoma 28
Orlando Florida 27
Austin Texas 27
Bronx New York 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
Quest Diagnostics - Chambersburg Norland 966 Norland Ave Chambersburg PA 17201 717-264-5020 39.9401262 -77.628049 966 Norland Ave, Chambersburg, PA, 17201 USA 2026-05-26
Sonora Quest Laboratories - Glendale - Westgate - Employer Drug Testing Not Offered 9980 W Glendale Ave Suite 120 Glendale AZ 85307 623-877-2297 33.5370033 -112.2747152 9980 W Glendale Ave Suite 120, Glendale, AZ, 85307 USA 2026-05-26
Bradley Screening, Llc 5283 Vaughn Rd Montgomery AL 36116 334-272-3539 32.3429027 -86.2181719 5283 Vaughn Rd, Montgomery, AL, 36116 USA 2026-05-26
Occupational Safety Services, Inc 1711 Hillyer Robinson Industrial Pkwy S Ste A Oxford AL 36203 256-835-6090 33.6207208 -85.8097009 1711 Hillyer Robinson Industrial Pkwy S Ste A, Oxford, AL, 36203 USA 2026-05-26
Andalusia Walk - In Clinic 847 W Bypass Ste A Andalusia AL 36420 334-428-2273 31.3146845 -86.4982716 847 W Bypass Ste A, Andalusia, AL, 36420 USA 2026-05-26
Fast Pace - Leeds 1455 Ashville Rd Leeds AL 35094 205-596-1180 33.5564667 -86.5286509 1455 Ashville Rd, Leeds, AL, 35094 USA 2026-05-26
Tarrant Medical, Pc 2038 Springdale Ln Tarrant AL 35217 205-841-7665 33.5881718 -86.768153 2038 Springdale Ln, Tarrant, AL, 35217 USA 2026-05-26
Access Medical Clinic - Blytheville 1000 E Main St Blytheville AR 72315 870-409-7060 35.9277128 -89.8833021 1000 E Main St, Blytheville, AR, 72315 USA 2026-05-26
Fastest Labs Of Scottsdale 7315 E Evans Rd Scottsdale AZ 85260 480-550-7230 33.6157104 -111.9236275 7315 E Evans Rd, Scottsdale, AZ, 85260 USA 2026-05-26
Assurance Screening & Solutions - Palmyra 501 E Main St Ste A Palmyra PA 17078 717-900-5655 40.3107407 -76.589774 501 E Main St Ste A, Palmyra, PA, 17078 USA 2026-05-26

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

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