mailing services.

WSU 4-digit delivery codes

The address for each University department contains a unique 4-digit delivery code. It appears in two places:

  • As the last 4 digits of the PO Box number
  • As the 4-digit extended zip code

For example, the address for Washington State Magazine, which has a campus delivery code of 1227, looks like this: PO Box 641227, Washington State University, Pullman, WA 99164-1227.

GroupDelivery code
Agricultural Research Center6240
Agriculture and Home Economics Alumni and Development6228
Ag Weather Net6232
Alcohol and Drug Abuse Program7620
Alumni Association6150
Alumni Relations6150
Animal Health Library5610
Animal Reproduction6353
Animal Science Nutrition6351
Animal Sciences Physiology6353
Animal Sciences, Department of6310
Anthropology, Department of4910
Apparel, Merchandising, Design, and Textiles, Department of6406
Architecture Library2210
Army ROTC5040
Arts & Sciences, College of, Development Office3528
Arts and Sciences, College of2630
Arts and Sciences, College of, Administrative Office2630
Arts and Sciences, College of, Social Sciences Division4841
Arts and Sciences, College of, Wilson-Short Division Office4871
Asia Program4030
Asian American and Pacific Islander Student Center (Compton Union Building)7204
Assessment of Teaching and Learning, Office of4550
Associated Students of Washington State University (ASWSU)7204
Astronomy Program2814
Athletics Ticket Office1625
Attorney General, Office of the1031
Basic Medical Sciences Program (WWAMI)3510
Beasley Coliseum1710
Benefit Services1024
Biochemistry and Biophysics, Program in7520
Biological Chemistry, Institute of (IBC)7411
Biological Sciences, School of4236
Biological Systems Engineering, Department of6120
Biomedical Communications Unit (BCU)7013
Brain Education Library5610
Budget Office1041
Business, Carson College Graduate and Online Programs3615
Business, Carson College of4750
CAHNRS (College of Agricultural, Human, and Natural Resource Sciences)6242
CAHNRS Alumni and Friends6228
CAHNRS Business and Finance6241
CAHNRS Business Services6235
CAHNRS Cashier’s Office6241
CAHNRS Computing and Web Resources6234
CAHNRS Information Department6248
CAHNRS Academic Programs6243
Campus Veterinarian, Office of the1165
Capital Planning and Development1150
Cashier’s Office1039
CDADIC (Center for Design of Analog-Digital Integrated Circuits)2780
Center for Environmental Research, Education, and Outreach (CEREO)5825
Center for Transformational Learning and Leadership4852
Central Receiving and Delivery, Supply Management Services1120
Central Stores, Supply Management Services1190
Chemical Engineering and Bioengineering, Voiland School of6515
Chemistry, Department of4630
Chicana/o Latina/o Student Center (Compton Union Building)7204
Child Care Resource and Referral3454
Children’s Center, WSU3454
Chinook Student Center5400
Chinook Yearbook2510
Civic Engagement, Center for (Compton Union Building)7204
Civil and Environmental Engineering, Department of2910
Clark Hall Business Center6384
College Assistance Migrant Program (CAMP)1064
Commercialization, Office of1060
Communication, Edward R. Murrow College of2520
Community Service Learning Center7204
Composite Materials and Engineering Center5815
Compton Union Building (CUB)7204
Conference Management5222
Connor Museum of Zoology4236
Controller’s Office1025
Cooperative Extension Services6248
Cooperative Extension Services Bulletins Office5912
Cougar Health Services2302
CougarCard Center (Compton Union Building)7204
CougPrints Plus (Compton Union Building)7204
Counseling and Psychological Services2302
Criminal Justice and Criminology, Department of4011
Crop and Soil Sciences, Department of6420
CUE Advising Center4555
Daily Evergreen2510
Dairy Center6310
Data Analytics3528
Dean of Students1013
Design and Construction, School of2220
Design and Printing Services (Cooper Publications Building)5910
Digital Technology and Culture, Department of3528
Dining Services6005
Disability Resource Center2322
Diversity Education5501
Economic Sciences, School of6210
Economics, Department of6210
Education, College of2114
Education, College of, Office of Recruitment and Retention2152
Educational Leadership, Sport Studies, and Educational/Counseling Psychology, Deptartment of2136
Educational Telecommunications and Technology2530
Electrical Engineering and Computer Science, School of2752
Electron Microscopy Center4210
Elson S. Floyd Cultural Center3301
Energy Plant1050
Engineering and Architecture Business and Finance2718
Engineering and Architecture, College of2250
Engineering and Architecture, College of, Undergraduate Programs and Student Services2713
Engineering and Technology Management, Program in2785
English, Department of5020
Enterprise Systems Group1222
Entomology, Department of6382
Entrepreneurial Studies, Center for4743
Environment, School of the2812
Environmental Health and Safety, Department of1172
Environmental Research Center2812
ESQ, Poe Studies5020
Extended Degree Programs5220
Extended University Services5210
Extension Natural Resources6410
Extension Publishing5912
Facilities Development1150
Facilities Services—Operations1150
Faculty Senate1038
Ferdinand’s Ice Cream Shoppe6392
Finance and Administration1045
Finance and Management Science, Department of4746
Fine Arts, Department of7450
Fischer Agricultural Sciences Library5610
Foley Institute for Public Policy and Public Service5136
Food Science, School of6376
Food Services1162
Football Operations Building1615
Franceschi Microscopy and Imaging Center4210
Fraternity and Sorority Life, Center for (Compton Union Building)7204
Frontiers: A Journal of Women Studies4007
Gender Identity Expression and Sexual Orientation Resource Center (Compton Union Building)7204
General Accounting1025
General Education4519
General Storage1101
Genetics and Cell Biology, Program in7520
Global Animal Health, Paul G. Allen School of7090
Global Campus, WSU5220
Golf Course (Palouse Ridge Golf Club)1045
Governmental Studies and Services, Division of6233
Graduate and Professional Student Association (GPSA)7204
Graduate School1030
Greek Council (Compton Union Building)7204
Health Professions Student Center4551
Health Sciences Library5610
Heritage House5501
High School Equivalency Program1062
History, Department of4030
Holland Library5610
Honors College2012
Horticulture, Department of6414
Hospitality Business Management4736
Housing and Dining Financial Services1722
Housing and Dining Maintenance1162
Housing Services1726
Human Development, Department of4852
Human Resource Services1014
Human Rights, Center for1022
IMPACT Center6214
Information Technology Services1222
Innovation and Research Engagement Office3610
Institutional Research1043
Pullman Integrated Academic Technologies5604
Integrated Biotechnology, Center for7521
Integrative Physiology and Neuroscience, Department of7620
Intellectual Property Administration, Office of1060
Intensive American Language Center3251
Interior Design, Department of2220
Internal Audit, Office of1221
International Business Institute4730
International Center (Compton Union Building)7204
International Programs5121
International Programs, Admissions5115
International Programs, Global Services5110
Intramural Sports Office7204
Kinesiology and Leisure Studies, Department of1410
KZUU Radio (Compton Union Building)7204
Laboratory for Atmospheric Research5845
Languages, Cultures, and Race, School of 2610
Leadership Programs7204
Libraries, WSU5610
Linguistics Program5020
Mailing Services5910
Management, Information Systems, and Entrepreneurship, Department of4743
Marketing and Communications, University1227
Marketing and International Business, Department of4730
Materials and Resources Management1101
Materials Research, Center for2711
Materials Science, Program in2711
Mathematics, Department of3113
McNair Achievement Program1064
Mechanical and Materials Engineering, Department of2920
Microbiology, Program in7520
Middle Eastern Student Association (Compton Union Building)7204
Military Science (Army ROTC)5040
Molecular Biosciences, School of7520
Motor Pool1075
Multicultural Student Services, Office of (Compton Union Building)7204
Murrow Student Services2530
Museum of Art WSU, Jordan Schnitzer7301
Music, School of5300
Muslim Student Association (Compton Union Building)7204
Native American Student Center (Compton Union Building)7204
Natural Resource Sciences, Department of6410
Neuroscience, Program in7620
New Student Programs1062
Nuclear Science Center1300
Nursing, College of, Spokane5291
Nutrition, Graduate Program in6376
Observatory (Jewett)3113
Ombudsman, University1015
Outdoor Recreation Center7204
Owen Science and Engineering Library5610
Ownbey Herbarium4236
Payroll Services1024
People-Pet Partnership7010
Photography Services5610
Physics and Astronomy, Department of2814
Plant Growth Facilities6003
Plant Introduction Unit, USDA6402
Plant Materials Center6420
Plant Pathology, Department of6430
Plant Services1075
Police, WSU1072
Politics, Philosophy, and Public Affairs, Department of4880
Pre-nursing Advising4551
President, Office of the 1048
Procedures, Records, and Forms, Office of1225
Provost, Office of the1046
Psychology Clinic4820
Psychology, Department of4820
Public Safety (Fire, Police)1072
Purchasing Services1020
Radiation Safety Office3143
Radio-Television Services2530
Real Estate Research, Washington Center for4746
Recycling, University1101
Re-entry Program1066
Registrar, Office of the1035
Reproductive Biology, Center for7521
Research Advancement and Partnerships1060
Research and Technology Park, WSU1060
Research Operations and Support, Office of1060
Research, Office of1060
Residence Hall Association (Compton Union Building)7204
Residence Life1724
Risk Management1023
Rocky Mountain Modern Language Association2610
Scholarship Services, Office of1069
Science Learning Instructional Center (SLIC)4236
Science Math. Engineering Education Center (SMEEC)4236
Sciences Advising (Premed., Predent., and Prevet.)4551
Seed House6420
Seed Technology Laboratory6420
Shock Physics, Institute for2816
Small Business Development Center (SBDC)1802
Smart Start Program (Compton Union Building)7204
Social and Economic Sciences Research Center (SESRC)4014
Social and Economic Sciences Research Center Public Opinion Lab1801
Sociology, Department of4020
Speech and Hearing Sciences, Department of2420
Spokane Falls Community College (Pullman Campus)2451
Sponsored Programs Services1025
Statistics, Program in3144
Steam Plant1150
Student Advising and Learning Center1064
Student Affairs Marketing and Communications (Compton Union Building)7204
Student Affairs, Division of1066
Student Conduct, Office of1013
Student Entertainment Board (Compton Union Building)7204
Student Financial Services1068
Student Health Center2302
Student Involvement (Compton Union Building)7204
Student Legal Services (Compton Union Building)7204
Student Media, Office of2510
Student Publications2510
Student Support Services (TRiO)1064
Student Veteran Services (Compton Union Building)7204
Students Book Corporation (The Bookie)7207
Summer Session5210
Surplus Stores1101
Teaching and Learning, Department of2132
Teaching, Learning, and Technology, Center for4550
Technical Services (College of Arts and Sciences)2801
Transportation Services5500
Travel Services1025
Tri-Cities, WSU1671
Undergraduate Education, Office of4519
Undergraduate Research, Office of4532
United States Department of Agriculture6221
University Advancement1925
University Receivables1039
University Recreation1830
University Stores, Supply Management Services1190
USDA Administration6221
USDA Agricultural Research Service, Grain Legume Genetics and Physiology Research Unit6434
USDA Animal Disease Research Unit6630
USDA Grain Legume Genetics and Physiology Research6434
USDA Northwest Sustainable Agroecosystem Research6421
USDA Plant Germplasm Introduction and Testing6402
USDA Root Disease and Biological Control Research6430
USDA Western Wheat Quality Laboratory6394
USDA Wheat Genetics, Quality, Physiology, and Disease6420
Vancouver, WSU9600
Veterans and Military Affiliated Services5615
Veterinary Clinical Sciences6610
Veterinary Medicine, College of7010
Veterinary Medicine, College of, Admissions7012
Veterinary Microbiology and Pathology7040
Veterinary Teaching Hospital7060
Vice President for Finance and Administration1045
Vice President of International Programs5130
Vice President of Student Affairs1066
Visitor Center, Brelsford WSU1912
Washington Animal Disease Diagnostic Laboratory (WADDL)7034
Washington State Magazine1227
Waste Management1101
Water Research Center5825
Wellness Programs2302
Western Journal of Black Studies2103
Western Wheat Quality Laboratory6394
Wilson-Short Service Center4013
Women’s Studies Program4007
Women's Center4005
Writing Program4530
WSU Foundation1925
WSU Online Administrative Services5210
WSU Press5910