Holtsville, NY Facts, Population, Income, Demographics, Economy

Population (total): Population in 2010: 19,714.

Cost of Living: March 2019 cost of living index in Holtsville: 150.2 (very high, U.S. average is 100)

Poverty (overall): Percentage of residents living in poverty in 2017: 5.2%

Poverty (breakdown): (5.9% for White Non-Hispanic residents, 3.2% for Black residents, 1.3% for Hispanic or Latino residents, 3.4% for two or more races residents)

Sex Offenders: According to our research of New York and other state lists, there were 2 registered sex offenders living in Holtsville, New York as of January 16, 2021. The ratio of all residents to sex offenders in Holtsville is 10,091 to 1.The ratio of registered sex offenders to all residents in this city is m

Zip Codes: 11742

Holtsville is located at 40°48′48″N 73°2′50″W / 40.81333°N 73.04722°W / 40.81333; -73.04722 (40.813394, -73.047175).

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Recognitions and Certifications

Accredited Drug Testing has been recognized as one of the "Top 10 drug testing companies" for excellent customer service and we have received TPA Accreditation from the National Drug and Alcohol Screening Association. We are active in all drug testing industry associations and our staff are trained and certified as drug and alcohol testing specialists.

Important Links

National Drug and Alcohol Screening Association (https://ndasa.com/)

National Drug Free Workplace Alliance (https://www.ndwa.org/)

Substance Abuse Program Administrators Association (https://www.sapaa.com/)

Substance Abuse Mental Health Safety Administration (https://www.samhsa.gov/)

US Drug Enforcement Administration (https://www.dea.gov/)

Office of Drug alcohol Policy Control (https://www.transportation.gov/odapc)

Hair Follicle Drug Testing 1

Hair Follicle Drug Testing Holtsville, NY

Accredited Drug Testing Inc provides Hair Follicle drug testing Holtsville, NY for individuals and employers needing a drug test utilizing the hair follicle analysis process. To schedule a hair follicle drug test in Holtsville, NY, Call (800) 221-4291. Most testing centers are within minutes of your home or office.


Hair follicle drug testing Holtsville, NY is available for 5, 10, and 12 panel drug screenings.

To schedule a Hair Follicle Drug Test at one of our testing centers in the Grady county area, Call (800) 221-4291, Same Day Service Available. Testing centers do not require an appointment, but you must call and register for the test.

Hair follicle drug testing is becoming a more popular method by employers and individuals in need of a drug test due to the detection time frame being longer than a standard urine test.

Local Hair follicle drug testing Holtsville, NY centers are available to assist our clients throughout the entire process and all of our hair follicle drug testing Holtsville, NY facilities have certified drug testing technicians available to conduct a hair follicle drug test collection.

Hair Follicle Drug Test

In recent years the method to conduct drug testing has more frequently included a hair follicle drug test. Many employers, courts and Substance Abuse Professionals are requiring a hair follicle drug test instead of a standard urine test. Hair follicle drug tests are used by employers who have zero-tolerance drug use policies, courts and individuals on probation. The primary benefit of a hair follicle drug test includes a much longer detection period for drug use which typically is up to 90 days. However, when screening drug use within the last 5 days the urine test continues to be the most accurate test.

Hair Follicle Drug Test Process

The procedure used to perform a hair follicle test is simple, the drug testing specialist will cut approximately 120 strands of hair (not really a lot) utilize a chain of custody procedure and send the hair to a certified laboratory for analysis. Drug testing centers require at least 1.5 inches of hair to perform this test and the hair generally needs to come from the head, however if the donor does not have head hair certain testing centers can use hair from chest, leg or arm pit.

If a donor has no hair on their body, than a hair test cannot be performed!

Hair Follicle Drug Test Results

Once the hair follicles have been analyzed by a certified laboratory they will then be reviewed and then verified by a Medical Review Officer (licensed Physician) who will than release the results. Generally a negative hair follicle drug test result is available in 2-3 days. A non-negative hair follicle drug test is available in approximately 5 days.

Urine cut-off levels are expressed in nanograms per milliliter (ng/mL) or as a weight of drug per unit volume of urine. Hair cut-off levels are expressed in picograms per milligram (pg/mg) or as a weight of drug per unit weight of hair

5 Panel Hair Follicle Drug Test

The 5 panel hair follicle drug test screens for the following

  • Amphetamine
  • Cocaine
  • Marijuana
  • Opiates
  • Phencyclidine

5 Panel w/ Expanded Opiates Hair Follicle Drug Test

The 5 panel w/ expanded Opiates hair drug test screens for the standard 5 drugs but will also screen for Opiate class drugs such as pain killers, which may indicate abuse of prescription drugs

  • Amphetamine
  • Cocaine
  • Codeine
  • Marijuana
  • Morphine
  • Phencyclidine
  • Hydrocodone
  • Hydromorphone
  • Oxycodone
  • Oxymorphone
  • 6 AM- Heroine

10 Panel Hair Follicle Drug Test

The 10 panel hair follicle drug test screens for the following

  • Amphetamines
  • Barbiturates
  • Benzodiazepines
  • Cocaine
  • Marijuana
  • Methadone
  • Methamphetamine
  • Opiates
  • Phencyclidine
  • Propoxyphene

12 Panel Hair Follicle Drug Test

The 12 panel hair follicle drug test screens for the following

  • Amphetamines
  • Barbiturates
  • Benzodiazepines
  • Cocaine
  • Marijuana
  • Meperidine
  • Methadone
  • Opiates
  • Oxycodone
  • Phencyclidine
  • Propoxyphene
  • Tramadol

To schedule a Hair follicle Drug Testing Holtsville, NY Call (800)221-4291.

Accredited Drug Testing Inc. is pleased to provide hair follicle drug testing, alcohol testing, occupational health and DNA testing services in Holtsville, NY.


1743 N OCEAN AVE 1.4 miles

1743 N OCEAN AVE
MEDFORD, NY 11763
Categories: MEDFORD NY

1723 N OCEAN AVE, STE D 1.5 miles

1723 N OCEAN AVE, STE D
MEDFORD, NY 11763
Categories: MEDFORD NY

82 12TH AVE 1.5 miles

82 12TH AVE
HOLTSVILLE, NY 11742
Categories: HOLTSVILLE NY

203 UNION AVE 2.2 miles

203 UNION AVE
HOLBROOK, NY 11741
Categories: HOLBROOK NY

4681 VETERANS MEMORIAL HWY 3.0 miles

4681 VETERANS MEMORIAL HWY
HOLBROOK, NY 11741
Categories: HOLBROOK NY

1647 ROUTE 112 3.3 miles

1647 ROUTE 112
MEDFORD, NY 11763
Categories: MEDFORD NY

325 MIDDLE COUNTRY RD STE C 3.8 miles

325 MIDDLE COUNTRY RD STE C
SELDEN, NY 11784
Categories: SELDEN NY

570 Expressway Dr South, Suite1-J 3.9 miles

570 Expressway Dr South, Suite1-J
Medford, NY 11763
Categories: Medford NY

475 E MAIN ST 2ND FL 4.1 miles

475 E MAIN ST 2ND FL
PATCHOGUE, NY 11772
Categories: PATCHOGUE NY

Brookhaven Professional Park, 285 Sills Road, Building 8, Su 4.2 miles

Brookhaven Professional Park, 285 Sills Road, Building 8, Su
East Patchogue, NY 11772
Categories: East Patchogue NY

35 MARLIN RD 4.2 miles

35 MARLIN RD
CENTEREACH, NY 11720
Categories: CENTEREACH NY

18 TERRELL ST 4.3 miles

18 TERRELL ST
PATCHOGUE, NY 11772
Categories: PATCHOGUE NY

100-10 South Jersey Avenue, Stop-N-Shop Plaza 4.3 miles

100-10 South Jersey Avenue, Stop-N-Shop Plaza
East Setauket, NY 11733
Categories: East Setauket NY

235 Boyle Rd, 4.5 miles

235 Boyle Rd,
Selden, NY 11784
Categories: Selden NY

1690 WASHINGTON AVE STE A 4.9 miles

1690 WASHINGTON AVE STE A
BOHEMIA, NY 11716
Categories: BOHEMIA NY

3279 VETERANS MEMORIAL HWY 4.9 miles

3279 VETERANS MEMORIAL HWY
RONKONKOMA, NY 11779
Categories: RONKONKOMA NY

4830 SUNRISE HWY 5.1 miles

4830 SUNRISE HWY
SAYVILLE, NY 11782
Categories: SAYVILLE NY

1850 ROUTE 112 5.1 miles

1850 ROUTE 112
CORAM, NY 11727
Categories: CORAM NY

17 HOWARD DR 5.2 miles

17 HOWARD DR
CORAM, NY 11727
Categories: CORAM NY

1 CORPORATE DR LOWER LEVEL 1 5.4 miles

1 CORPORATE DR LOWER LEVEL 1
BOHEMIA, NY 11716
Categories: BOHEMIA NY

3001 EXPRESS DR N STE 200C 5.6 miles

3001 EXPRESS DR N STE 200C
ISLANDIA, NY 11749
Categories: ISLANDIA NY

2500 NESCONSET HWY BLDG 8 5.7 miles

2500 NESCONSET HWY BLDG 8
STONY BROOK, NY 11790
Categories: STONY BROOK NY

160 MIDDLE RD 5.8 miles

160 MIDDLE RD
SAYVILLE, NY 11782
Categories: SAYVILLE NY

23 Technology Dr., Suite 2 6.2 miles

23 Technology Dr., Suite 2
East Setauket, NY 11733
Categories: East Setauket NY

The Bayview Building, 233 Montauk Highway 6.3 miles

The Bayview Building, 233 Montauk Highway
West Sayville, NY 11796
Categories: West Sayville NY

146 WILLOW WOOD DR 6.3 miles

146 WILLOW WOOD DR
OAKDALE, NY 11769
Categories: OAKDALE NY

1770 MOTOR PKWY 2ND FL 6.4 miles

1770 MOTOR PKWY 2ND FL
HAUPPAUGE, NY 11788
Categories: HAUPPAUGE NY

606 MIDDLE COUNTRY RD 6.5 miles

606 MIDDLE COUNTRY RD
MIDDLE ISLAND, NY 11953
Categories: MIDDLE ISLAND NY

333 CANDEE AVE APT 8D 6.5 miles

333 CANDEE AVE APT 8D
SAYVILLE, NY 11782
Categories: SAYVILLE NY

1660 ROUTE 112 STE E 6.8 miles

1660 ROUTE 112 STE E
PORT JEFFERSON STATION, NY 11776
Categories: PORT JEFFERSON STATION NY

30 JEROME ST 7.0 miles

30 JEROME ST
SMITHTOWN, NY 11787
Categories: SMITHTOWN NY

1010 Route 112, 2nd Floor 7.5 miles

1010 Route 112, 2nd Floor
Port Jefferson Station, NY 11776
Categories: Port Jefferson Station NY

37 BEACH AVE 7.6 miles

37 BEACH AVE
PORT JEFFERSON STATION, NY 11776
Categories: PORT JEFFERSON STATION NY

5225 ROUTE 347 BLDG 1314 7.7 miles

5225 ROUTE 347 BLDG 1314
PORT JEFFERSON STATI, NY 11776
Categories: PORT JEFFERSON STATI NY

222 Middle Country Road, Suite 107 7.8 miles

222 Middle Country Road, Suite 107
Smithtown, NY 11787
Categories: Smithtown NY

2 BROOKSITE DR 8.8 miles

2 BROOKSITE DR
SMITHTOWN, NY 11787
Categories: SMITHTOWN NY

490 Wheeler Rd., Suite 190 9.1 miles

490 Wheeler Rd., Suite 190
Hauppauge, NY 11788
Categories: Hauppauge NY

1 KINGS HWY 9.2 miles

1 KINGS HWY
HAUPPAUGE, NY 11788
Categories: HAUPPAUGE NY

765 ROUTE 25A 9.2 miles

765 ROUTE 25A
MILLER PLACE, NY 11764
Categories: MILLER PLACE NY

10A KEMP CT 9.9 miles

10A KEMP CT
EAST ISLIP, NY 11730
Categories: EAST ISLIP NY

47 MOREWOOD DR 10.9 miles

47 MOREWOOD DR
SMITHTOWN, NY 11787
Categories: SMITHTOWN NY

8 Saxon Avenue, Suite D, 11.3 miles

8 Saxon Avenue, Suite D,
Bay Shore, NY 11706
Categories: Bay Shore NY

41 BRENTWOOD RD 11.6 miles

41 BRENTWOOD RD
BAY SHORE, NY 11706
Categories: BAY SHORE NY

57 E MAIN ST 12.3 miles

57 E MAIN ST
BAY SHORE, NY 11706
Categories: BAY SHORE NY

9 HOWELLS RD 12.4 miles

9 HOWELLS RD
BAY SHORE, NY 11706
Categories: BAY SHORE NY

625 MAIN ST 12.6 miles

625 MAIN ST
CENTER MORICHES, NY 11934
Categories: CENTER MORICHES NY

2171 JERICHO TPKE. SUITE 200 12.7 miles

2171 JERICHO TPKE. SUITE 200
COMMACK, NY 11725
Categories: COMMACK NY

2171 Jericho Turnpike, Suite 102 12.7 miles

2171 Jericho Turnpike, Suite 102
Commack, NY 11725
Categories: Commack NY

617 A MONTAUK HWY 12.7 miles

617 A MONTAUK HWY
CENTER MORICHES, NY 11934
Categories: CENTER MORICHES NY

649 COMMACK RD 13.0 miles

649 COMMACK RD
COMMACK, NY 11725
Categories: COMMACK NY

6277 JERICHO TPKE 13.2 miles

6277 JERICHO TPKE
COMMACK, NY 11725
Categories: COMMACK NY

onsite for POH only 13.2 miles

onsite for POH only
Brightwaters, NY 11718
Categories: Brightwaters NY

6144 Route 25A, Building B, Suite 8 14.2 miles

6144 Route 25A, Building B, Suite 8
Wading River, NY 11792
Categories: Wading River NY

On Site Only 15.1 miles

On Site Only
West Islip, NY 11795
Categories: West Islip NY

1940 DEER PARK AVE 15.3 miles

1940 DEER PARK AVE
DEER PARK, NY 11729
Categories: DEER PARK NY

1350 Deer Park Ave, 15.4 miles

1350 Deer Park Ave,
North Babylon, NY 11703
Categories: North Babylon NY

41 VERONICA LN 15.8 miles

41 VERONICA LN
NORTH BABYLON, NY 11703
Categories: NORTH BABYLON NY

On Site Only 16.1 miles

On Site Only
Babylon, NY 11702
Categories: Babylon NY

320 LAUREL RD 16.1 miles

320 LAUREL RD
NORTHPORT, NY 11768
Categories: NORTHPORT NY

21 EASTPORT MANOR RD 16.3 miles

21 EASTPORT MANOR RD
EASTPORT, NY 11941
Categories: EASTPORT NY

142 RALPH AVE 16.9 miles

142 RALPH AVE
BABYLON, NY 11702
Categories: BABYLON NY

500 West Main Street, 17.7 miles

500 West Main Street,
Babylon, NY 11702
Categories: Babylon NY

PO Box 1693 17.7 miles

PO Box 1693
West Babylon, NY 11704
Categories: West Babylon NY

21 E 23RD ST 19.0 miles

21 E 23RD ST
HUNTINGTON STATION, NY 11746
Categories: HUNTINGTON STATION NY

175 E Main Street Suite 105, 19.1 miles

175 E Main Street Suite 105,
Huntington, NY 11743
Categories: Huntington NY

315 WALT WHITMAN RD STE 307 19.2 miles

315 WALT WHITMAN RD STE 307
HUNTINGTON STATION, NY 11746
Categories: HUNTINGTON STATION NY

910 ROUTE 109 19.3 miles

910 ROUTE 109
LINDENHURST, NY 11757
Categories: LINDENHURST NY

1445 NEW YORK AVE 19.3 miles

1445 NEW YORK AVE
HUNTINGTON STATION, NY 11746
Categories: HUNTINGTON STATION NY

184 S 1ST ST 19.4 miles

184 S 1ST ST
LINDENHURST, NY 11757
Categories: LINDENHURST NY

656 N WELLWOOD AVE STE 208A 19.4 miles

656 N WELLWOOD AVE STE 208A
LINDENHURST, NY 11757
Categories: LINDENHURST NY

2 CEDARTREE LN 19.4 miles

2 CEDARTREE LN
HUNTINGTON STATION, NY 11746
Categories: HUNTINGTON STATION NY

74 Commerce Drive, Suite 2 19.5 miles

74 Commerce Drive, Suite 2
Riverhead, NY 11901
Categories: Riverhead NY

47 COMMERCE AVE 19.6 miles

47 COMMERCE AVE
RIVERHEAD, NY 11901
Categories: RIVERHEAD NY

51 Walnut Ave E 21.0 miles

51 Walnut Ave E
Farmingdale, NY 11735
Categories: Farmingdale NY

230 W MAIN ST 21.0 miles

230 W MAIN ST
RIVERHEAD, NY 11901
Categories: RIVERHEAD NY

887 OLD COUNTRY RD, STE C 21.2 miles

887 OLD COUNTRY RD, STE C
RIVERHEAD, NY 11901
Categories: RIVERHEAD NY

618 Broadway 21.5 miles

618 Broadway
Amityville, NY 11701
Categories: Amityville NY

365 BROADWAY 21.5 miles

365 BROADWAY
AMITYVILLE, NY 11701
Categories: AMITYVILLE NY

4 ROBIN CT 21.7 miles

4 ROBIN CT
FARMINGDALE, NY 11735
Categories: FARMINGDALE NY

877 E MAIN ST 21.9 miles

877 E MAIN ST
RIVERHEAD, NY 11901
Categories: RIVERHEAD NY

4 MIRIAM LN 22.0 miles

4 MIRIAM LN
PLAINVIEW, NY 11803
Categories: PLAINVIEW NY

1228 E Main St 22.2 miles

1228 E Main St
Riverhead, NY 11901
Categories: Riverhead NY

170 OLD COUNTRY RD 22.2 miles

170 OLD COUNTRY RD
RIVERHEAD, NY 11901
Categories: RIVERHEAD NY

1117 OLD COUNTRY RD 22.2 miles

1117 OLD COUNTRY RD
PLAINVIEW, NY 11803
Categories: PLAINVIEW NY

100 MANETTO HILL RD, STE 309 22.5 miles

100 MANETTO HILL RD, STE 309
PLAINVIEW, NY 11803
Categories: PLAINVIEW NY

146A Manetto Hill Rd., Suite 101 22.5 miles

146A Manetto Hill Rd., Suite 101
Plainview, NY 11803
Categories: Plainview NY

4900 HEMPSTEAD TPKE 22.8 miles

4900 HEMPSTEAD TPKE
FARMINGDALE, NY 11735
Categories: FARMINGDALE NY

4900 Merrick Road, Southgate S, 2nd Floor 23.4 miles

4900 Merrick Road, Southgate S, 2nd Floor
Massapequa Park, NY 11762
Categories: Massapequa Park NY

4276 Hempstead Turnpike, 23.6 miles

4276 Hempstead Turnpike,
Bethpage, NY 11714
Categories: Bethpage NY

4277 HEMPSTEAD TPKE STE 100 23.6 miles

4277 HEMPSTEAD TPKE STE 100
BETHPAGE, NY 11714
Categories: BETHPAGE NY

87 COLD SPRING RD STE 1 23.7 miles

87 COLD SPRING RD STE 1
SYOSSET, NY 11791
Categories: SYOSSET NY

180 10TH ST 23.7 miles

180 10TH ST
BETHPAGE, NY 11714
Categories: BETHPAGE NY

100 E OLD COUNTRY RD 24.8 miles

100 E OLD COUNTRY RD
HICKSVILLE, NY 11801
Categories: HICKSVILLE NY

55 E OLD COUNTRY RD 24.9 miles

55 E OLD COUNTRY RD
HICKSVILLE, NY 11801
Categories: HICKSVILLE NY

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Alcohol Testing Holtsville, NY Services

(800)221-4291

For more information regarding the effects of drug abuse - Click Here

For more information on a drug free work place - Click Here

Handy Resources

Comprehensive Online Resources for Drug Testing

  1. National Institute on Drug Abuse (NIDA)

    Provides comprehensive information on drug testing and its role in substance use disorder treatment.

  2. FDA: Drug Testing

    Explains the FDA's role and regulations concerning drug testing for consumers.

  3. PDR.net

    Provides detailed drug information and safety updates through a mobile-friendly platform.

  4. BeSafeRx - FDA

    Resource by the FDA to help consumers identify and choose safe online pharmacies.

  5. SAMHSA: Drug Testing Resources for the Workplace

    Resources and guidelines for drug testing in the workplace.

  6. Drugs.com

    Provides drug information, side effects, and interactions for consumers and professionals.

  7. Drug Abuse Screening Test (DAST)

    Online version of the DAST to help individuals assess whether they have a drug problem.

  8. Merck Manuals

    Consumer-friendly medical resource providing comprehensive information on a wide array of health topics, including drug testing.

  9. SAMHSA Store

    Provides access to resources and publications on substance use prevention and treatment.

  10. National Association of Boards of Pharmacy (NABP)

    Information on state boards of pharmacy and regulations, including those related to drug testing.

  11. CDC: Workplace Health Promotion

    CDC's resources on substance use and drug testing in the workplace.

  12. Mayo Clinic: Drug Testing

    General information about the procedures and types of drug tests.

  13. MedlinePlus: Drug Testing

    Offers information about various drug tests and their uses in medical diagnosis and treatment.

  14. University of Rochester Medical Center Health Encyclopedia

    Provides a detailed entry on drug testing, including how tests are conducted and what they detect.

  15. World Health Organization (WHO)

    International guidelines and information on public health, including substance abuse and drug testing.

  16. Healthline: Drug Testing

    Consumer health site offering information on how drug tests work and what they look for.

  17. WebMD: Drug Testing

    Provides a patient-oriented overview of drug testing and its purposes.

  18. National Center for Biotechnology Information (NCBI)

    Provides a vast database of scientific studies, including research on drug testing and its effectiveness.

AI Overview

Comprehensive Guide to Hair Follicle Drug Testing

Hair follicle drug testing is a sophisticated technique used to detect both illicit drug use and the misuse of prescription drugs over an extended period. This method of testing is favored for its ability to provide a detailed drug use history far beyond the capability of standard urine tests, which only capture drug use within days of consumption.

Understanding Hair Follicle Drug Testing

During a hair follicle drug test, a small sample of hair is collected, usually from the head. This sample is then analyzed to detect drug molecules and their metabolites that have been deposited into the hair from the bloodstream. Drugs that can be detected include but are not limited to cannabis, cocaine, opiates, and methamphetamine.

Key Applications

  • Workplace Compliance: Employers often implement hair follicle testing to maintain a drug-free work environment, especially in industries where safety is paramount.
  • Legal Evidence: In the legal arena, these tests can provide compelling evidence in cases such as custody disputes or driving under the influence (DUI) incidents.
  • Substance Abuse Monitoring: Rehabilitation centers may utilize hair tests to monitor individuals over time, ensuring adherence to treatment programs.

Benefits of Hair Follicle Drug Testing

  1. Extended Window of Detection: Unlike other tests, hair follicle testing can detect drug use up to 90 days back, offering a long-range view into an individual's drug history.
  2. Low Risk of Tampering: Since hair samples are collected directly and observed, the risk of sample tampering is significantly reduced compared to other forms of testing.
  3. Less Invasive: Collecting hair is far less intrusive compared to blood tests, making it more comfortable for the individual being tested.

Limitations to Consider

Despite its advantages, hair follicle testing isn't without its challenges:

  • Rate of Hair Growth: Variations in hair growth rates can affect the detection period, slightly complicating the interpretation of results.
  • Environmental Contamination: In rare cases, drugs can be externally deposited onto the hair, although rigorous washing protocols before testing help mitigate this issue.
  • Cultural Sensitivity: The need for a hair sample can pose dilemmas for individuals with cultural or religious practices affecting their hair.

Hair follicle drug testing stands out as a reliable method for analyzing long-term drug use. Its application spans various fields from corporate environments to legal settings, making it an indispensable tool for ensuring safety and compliance with drug policies.

Local Area Info: Holtsville, New York

The hamlet known today as Holtsville included only a few farmhouses in the late 18th century. In 1843, the Long Island Rail Road opened its Waverly Station. Maps from that period label the area as Waverly, and a stagecoach line ran north-south along present day Waverly Avenue. As another post office named Waverly already existed in Upstate New York, the name of the hamlet was changed to Holtsville in 1860, in honor of U.S. Postmaster General Joseph Holt. As of 1874, Holtsville consisted of 15 houses, a school, and a general store. The train station retained the name "Waverly" for some time, but was eventually also changed to Holtsville, probably in the 1890s, after farmers complained about their shipments going upstate by mistake. In 1916, the Suffolk County Tuberculosis Sanatorium opened on land that was considered Holtsville at the time, but is now part of the hamlet of Selden. The site later became the location of the main campus of Suffolk County Community College.

The rail era in Holtsville ended in 1998, when a number of LIRR stations closed due to low ridership. Holtsville commuters were advised to use Medford and Ronkonkoma stations; more use Ronkonkoma because, except for a few peak-hour trains terminating in Mineola or Hicksville, boarding at Medford would require transfer to an electric train at Ronkonkoma anyway.

Holtsville is home to the Harold H. Malkmes Wildlife Education and Ecology Center, a public zoo and ecological park located on the site of a former landfill. Some of the amenities at the Holtsville Park include: a triple pool complex; exercise-trail fitness course; nature preserve and ecology center, featuring buffalo, bobcats, eagles, ecology exhibits and tours, free compost, greenhouses and a picnic area.

Show Regional Data

Population (total): Population in 2010: 19,714.

Cost of Living: March 2019 cost of living index in Holtsville: 150.2 (very high, U.S. average is 100)

Poverty (overall): Percentage of residents living in poverty in 2017: 5.2%

Poverty (breakdown): (5.9% for White Non-Hispanic residents, 3.2% for Black residents, 1.3% for Hispanic or Latino residents, 3.4% for two or more races residents)

Sex Offenders: According to our research of New York and other state lists, there were 2 registered sex offenders living in Holtsville, New York as of January 16, 2021. The ratio of all residents to sex offenders in Holtsville is 10,091 to 1.The ratio of registered sex offenders to all residents in this city is m

Zip Codes: 11742

Holtsville is located at 40°48′48″N 73°2′50″W / 40.81333°N 73.04722°W / 40.81333; -73.04722 (40.813394, -73.047175).

(800) 221-4291