Sending to a Specific Employee

• Regular mail: please use the mailing address for a specific employee as listed in the EPA Employee Directory. See Find someone who works at EPA? at right.
• Package or delivery: please contact the employee and ask for the specific street address and any required delivery instructions. See Find someone who works at EPA? at right.

Sending to a Location without Knowing the Specific Employee

Please use the addresses listed below. At headquarters, we use one address for all regular mail and specific building addresses for packages. In other locations, we use one address for both purposes.

• HQ standard postal mailing address and main phone number
• HQ overnight delivery addresses
• Regional Offices Across the Nation
• Office of Research and Development Facilities
• National Laboratories
• Cincinnati and Research Triangle Park
• Finance Centers

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HQ Standard Postal Mailing Address

Environmental Protection Agency
1200 Pennsylvania Avenue, N.W.
Washington, DC 20460

To send a letter to a particular EPA organization, add the name of the organization and the mail code designation for that office to the address above.  The organization name and mail code designation should be listed below "Environmental Protection Agency" and above "1200 Pennsylvania Avenue, N.W."

Mail Codes for EPA HQ Offices

EPA Headquarters Office	Mail Code
Office of the Administrator	1101A
Office of Air and Radiation	6101A
Office of Chemical Safety and Pollution Prevention	7101M
Office of the Chief Financial Officer	2710A
Office of Enforcement and Compliance Assurance	2201A
Office of General Counsel	2310A
Office of the Inspector General	2410T
Office of International and Tribal Affairs	2610R
Office of Land and Emergency Management	5101T
Office of Policy	1804A
Office of Mission Support	3101A
Office of Research and Development	8101R
Office of Water	4101M

EPA HQ Main Telephone Number

(202) 564-4700

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HQ Overnight Delivery Addresses

Main HQ Locations

USEPA William Jefferson Clinton Building North (WJC North)
1200 Pennsylvania Avenue N.W.
Washington, DC 20004

USEPA William Jefferson Clinton Building South (WJC South)
1200 Pennsylvania Avenue N.W.
Washington, DC 20004

USEPA William Jefferson Clinton West Building (WJC West)
1301 Constitution Avenue N.W.
Washington, DC 20004

USEPA William Jefferson Clinton East Building (WJC East) 
1201 Constitution Avenue N.W.
Washington, DC 20004

USEPA Ronald Reagan Building (RRB)
1300 Pennsylvania Avenue N.W.
Washington, DC 20004

Other HQ Locations

Environmental Protection Agency
Environmental Science Center (ESC)
701 Mapes Road
Fort Meade, MD 20755-5350

One Potomac Yard
2777 Crystal Drive
Arlington, VA 22202-3553

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Regional Offices Across the Nation

Region 1 (CT, MA, ME, NH, RI, VT)
Environmental Protection Agency
5 Post Office Square - Suite 100
Boston, MA 02109-3912
Phone: (617) 918-1111
Fax: (617) 918-1809
Toll free: (888) 372-7341

​Region 2 (NJ, NY, PR, VI)
Environmental Protection Agency
290 Broadway
New York, NY 10007-1866
Phone: (212) 637-3660
Fax: (212) 637-3526

Region 3 (DC, DE, MD, PA, VA, WV)
Environmental Protection Agency
1650 Arch Street
Philadelphia, PA 19103-2029
Phone: (215) 814-5000
Fax: (215) 814-5103
Toll free: (800) 438-2474

​Region 4 (AL, FL, GA, KY, MS, NC, SC, TN)
Environmental Protection Agency
Atlanta Federal Center
61 Forsyth Street, SW
Atlanta, GA 30303-3104
Phone: (404) 562-9900
Fax: (404) 562-8174
Toll free: (800) 241-1754

Region 5 (IL, IN, MI, MN, OH, WI)
Environmental Protection Agency
77 West Jackson Boulevard
Chicago, IL 60604-3507
Phone: (312) 353-2000
Fax: (312) 353-4135
Toll free: (800) 621-8431

Region 6 (AR, LA, NM, OK, TX)
Environmental Protection Agency
1201 Elm Street, Suite 500
Dallas, TX 75270
Phone: (214) 665-2200
Toll free: (800) 887-6063

Region 7 (IA, KS, MO, NE)
Environmental Protection Agency
11201 Renner Blvd.
Lenexa, KS 66219
Phone: (913) 551-7003
Toll free: (800) 223-0425

Region 8 (CO, MT, ND, SD, UT, WY)
Environmental Protection Agency
1595 Wynkoop St.
Denver, CO 80202-1129
Phone: (303) 312-6312
Fax: (303) 312-6339
Toll free: (800) 227-8917
Email: r8eisc@epa.gov

Region 9 (AZ, CA, HI, NV, GU, AS, MP)
Environmental Protection Agency
75 Hawthorne Street
San Francisco, CA 94105
Phone: (415) 947-8000
(866) EPA-WEST (toll free in Region 9)
Fax: (415) 947-3553
Email: r9.info@epa.gov

Region 10 (AK, ID, OR, WA)
Environmental Protection Agency
1200 Sixth Avenue, Suite 155
Seattle, WA 98101
Phone: (206) 553-1200
(800) 424-4372 (toll free in Region 10)
Fax: (206) 553-2955
Toll free: (800) 424-4372

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Office of Research and Development Facilities

Research Center/Office/Division	Address	Phone Number
US EPA Office of Research and Development (ORD) - main office	1200 Pennsylvania Avenue, NW Mail Code: 8101R Washington, DC 20460	(202) 564-6620
US EPA Center for Computational Toxicology and Exposure (CCTE) - main office	Mail Code: D143-02 Research Triangle Park, NC 27711	(919) 541-4219
CCTE Biomolecular and Computational Toxicology Division	Mail Code: D143-02 Research Triangle Park, NC 27711	(919) 541-4219
CCTE Chemical Characterization and Exposure Division	Mail Code: E205-09 Research Triangle Park, NC 27711	(919) 541-4219
CCTE Great Lakes Toxicology and Ecology Division	6201 Congdon Boulevard Duluth, MN 55804	(218) 529-5016
CCTE Scientific Computing and Data Curation Division	Mail Code: D143-02 Research Triangle Park, NC 27711	(919) 541-4219
US EPA Center for Environmental Measurement and Modeling (CEMM) - main office	Mail Code: D305-01 Research Triangle Park, NC  27711	(919) 541-2106
CEMM Air Methods and Characterization Division	Mail Code: E343-04 Research Triangle Park, NC 27711	(919) 541-2822
CEMM Atlantic Coastal Environmental Sciences Division	27 Tarzwell Drive Narragansett, RI 02882	(401) 782-3001
CEMM Atmospheric and Environmental Systems Modeling Division	Mail Code: E205-01 Research Triangle Park, NC 27711	(919) 541-9733
CEMM Ecosystem Processes Division	980 College Station Road Athens, GA 30605-2700	(706) 355-8005
CEMM Gulf Ecosystem Measurement and Modeling Division	1 Sabine Island Drive Gulf Breeze, FL 32561	(850) 934-9200
CEMM Watershed and Ecosystem Characterization Division	26 West Martin Luther King Dr. Mail Code: 587 Cincinnati, OH  45268	(513) 569-7341
US EPA Center for Environmental Solutions and Emergency Response (CESER) - main office	26 W. Martin Luther King Dr. Mail Code: 236 Cincinnati, OH 45268	(513) 569-7900
CESER Groundwater Characterization and Remediation Division	919 Kerr Research Drive P.O. Box 1198 Ada, OK 74820	(580) 436-8500
CESER Homeland Security Materials Management Division	Mail Code E343-06 Research Triangle Park, NC 27711	(919) 541-2336
CESER Land Remediation Technology Division	26 W. Martin Luther King Dr. Mail Code: 190 Cincinnati, OH 45268	(513) 569-7029
CESER Technical Support Coordination Division	26 W. Martin Luther King Dr. Mail Code: NG16 Cincinnati, OH 45268	(513) 569-7900
CESER Water Infrastructure Division	26 W. Martin Luther King Dr. Mail Code: 689 Cincinnati, OH 45268	(513) 569-7046
U.S. EPA Center for Public Health and Environmental Assessment (CPHEA) - main office	Mail Code: B305-01 Research Triangle Park, NC 27711	(919) 541-2281
CPHEA Chemical and Pollutant Assessment Division	1200 Pennsylvania Avenue, NW Mail Code: 8602R Washington, DC 20460	(202) 564-4700
CPHEA Health and Environmental Effects Assessment Division	Mail Code: B243-01 Research Triangle Park, NC 27711	(919) 541-4173
CPHEA Public Health and Environmental Systems Division	Mail Code: B105-03 Research Triangle Park, NC 27711	(919) 541-4564
CPHEA Public Health and Integrated Toxicology Division	104 Mason Farm Road Chapel Hill, NC 27599	(919) 966-9583
CPHEA Pacific Ecological Systems Division	200 SW 35th Street Corvallis, OR 97333	(541) 754-4600
U.S. EPA Office of Science Advisor, Policy, and Engagement (OSAPE) - main office	1200 Pennsylvania Avenue, NW Mail Code: 8104R Washington, DC 20460	(202) 564-6705
OSAPE Extramural Research and Partnerships Division	1200 Pennsylvania Ave, NW Mail Code: 8104R Washington, DC 20460	(202) 564-6705
OSAPE Science Policy Division	1200 Pennsylvania Ave., NW Mail Code: 8104R Washington, DC 20460	(202) 564-6705

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National Laboratories

Laboratory	Address	Phone Number
U.S. EPA Environmental Science Center	701 Mapes Road Ft. Meade, MD 20755-5350	(410) 305-2800
U.S. EPA National Analytical Radiation Environmental Laboratory (NAREL)	540 South Morris Avenue Montgomery, AL 36115-2601	(334) 270-3400
U.S. EPA National Center for Radiation Field Operations (NCRFO)	4220 S Maryland Parkway, Building C Las Vegas, Nevada  89119	(702) 784-8200
U.S. EPA National Enforcement Investigations Center Laboratory (NEIC)	Box 25227, Building 25 Denver Federal Center Denver, CO 80225	(303) 462-9000
U.S. EPA National Vehicle and Fuel Emissions Laboratory (NVFEL)	2000 Traverwood Drive Ann Arbor, MI 48105	(734) 214-4200

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Cincinnati and Research Triangle Park

Cincinnati, OH

Physical Address

U.S. EPA
26 Martin Luther King Drive
Cincinnati, OH 45268

Research Triangle Park, NC

Type	Address
Mailing Address	U.S. EPA Mail Code: [fill in mail code] Research Triangle Park, NC 27711
Physical Address	U.S. EPA 109 T.W. Alexander Drive Durham, NC 27709
Commercial Delivery Address	U.S. EPA 4930 Old Page Road Durham, NC 27703

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Finance Centers

Cincinnati Finance Center (CFC)

U.S. Postal Service, UPS, Federal Express, or Overnight Mail
U.S. EPA
26 W. Martin Luther King Dr.
MS: WG32B
Cincinnati, Ohio 45268

Ph: (513) 487-2074

Research Triangle Finance Center (RTP-FC)

U.S. Environmental Protection Agency
RTP-Finance Center
109 TW Alexander Drive (D143-02)
Durham, N.C. 27711

UPS, Federal Express, or Overnight Mail
U.S. Environmental Protection Agency
RTP-Finance Center
4930 Old Page Road (D143-02)
Research Triangle Park, N.C. 27709

Contract Payments:
Ph: (919) 541-1148

Vendor Payments:
Ph: (919) 541-0616

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