Below is list of WYLD libraries and their codes in the ILS.
| Library Code | Name of Library | Policy Group Number |
| ALBY | Albany Co. Public Library | 05 |
| ALBY-BKMBL | Albany Co. Bookmobile | 0504 |
| ALBY-CENT | Albany Co. - Centennial Branch | 0502 |
| ALBY-ROCK | Albany Co. - Rock River Branch | 0503 |
| BBHC | McCracken Research Library - BBCW | 33 |
| BHN | Big Horn Co. Library | 09 |
| BHN-DEAV | Big Horn Co. - Deaver Branch | 0905 |
| BHN-FRAN | Big Horn Co. - Frannie Branch | 0904 |
| BHN-GREY | Big Horn Co. - Greybull Branch | 0902 |
| BHN-LOVL | Big Horn Co. - Lovell Branch | 0903 |
| CAMP | Campbell Co. Public Library | 17 |
| CAMP-WRIG | Campbell Co. - Wright Branch | 1702 |
| CARB | Carbon Co. Rawlins Library | 06 |
| CARB-ELKMT | Carbon Co. Elk Mountain Library | 0602 |
| CARB-ENC | Carbon Co. Encampment-Riverside Library | 0603 |
| CARB-HANNA | Carbon Co. Hanna Library | 0604 |
| CARB-LSRIV | Carbon Co. Baggs Library | 0605 |
| CARB-MBOW | Carbon Co. Medicine Bow Library | 0606 |
| CARB-SART | Carbon Co. Saratoga Library | 0607 |
| CARB-SINC | Carbon Co. Sinclair Library | 0608 |
| CCSD-ELEL | Carbon SD2 - Elk Mtn Elem School | 3809 |
| CCSD-ENSC | Carbon SD2 - Encampment School | 3801 |
| CCSD-HAEL | Carbon SD2 - Hanna Elem School | 3802 |
| CCSD-HAHS | Carbon SD2 - Hanna-Elk Mtn - High School | 3803 |
| CCSD-MEDB | Carbon SD2 - Medicine Bow School | 3804 |
| CCSD-SAEL | Carbon SD2 - Saratoga Elem School | 3805 |
| CCSD-SAHS | Carbon SD2 - Saratoga High School | 3807 |
| CONV | CCL - Douglas | 13 |
| CONV-GLEN | CCL - Glenrock | 1302 |
| CRK | Crook Co. Library | 18 |
| CRK-HULE | Crook Co. - Hulett Branch | 18 |
| CRK-MOOR | Crook Co. - Moorcroft Branch | 1802 |
| CRKSD-HUBR | Crook SD1 - Hulett School Library | 4305 |
| CRKSD-MOEL | Crook SD1 - Moorcroft Elem School | 4304 |
| CRKSD-MOHS | Crook SD1 - Moorcroft Secondary School | 4303 |
| CRKSD-SUEL | Crook SD1 - Sundance Elem School | 4302 |
| CRKSD-SUHS | Crook SD1 - Sundance Secondary School | 4301 |
| CSPC | Casper College Library | 25 |
| CWC | Central Wyoming College Library | 28 |
| EWC | Eastern Wyoming College Library | 29 |
| FEW | WYLD TEST LIBRARY FEW | |
| FREM | Fremont Co. - Lander Library | 10 |
| FREM-CROW | zUnused | |
| FREM-DUBO | Fremont Co. - Dubois Branch | 1003 |
| FREM-HUD | zUnused | |
| FREM-RIVT | Fremont Co. - Riverton Branch | 1002 |
| FREM-SHOS | Zunused | |
| FSDD | Fremont School District - Dubois | 45 |
| GOSH | Goshen Co. Library | 07 |
| HSPG | Hot Springs Co. Library | 15 |
| JOHN | Johnson Co. Library | 16 |
| JOHN-KAYC | Johnson Co. - Kaycee Branch | 1602 |
| LARM | Laramie Co. Library - Cheyenne | 02 |
| LARM-BKMBL | Laramie Co. Library - Bookmobile | 0205 |
| LARM-BOTG | Cheyenne Botanic Gardens | 0201 |
| LARM-BURN | Laramie Co. Library - Burns | 0202 |
| LARM-GEN | Laramie Co. Library - Genealogy | 02 |
| LARM-PINE | Laramie Co. Library - Pine Bluffs | 0203 |
| LCCC | Laramie County Community College | 26 |
| LCCC-ACC | Laramie County Community College - Albany Campus | 26 |
| LINC | Lincoln Co. Library - Kemmerer | 12 |
| LINC-ALPI | Lincoln Co. - Alpine Branch | 12 |
| LINC-COKE | Lincoln Co. - Cokeville Branch | 1202 |
| LINC-LBAR | Lincoln Co. - LaBarge Branch | 1203 |
| LINC-STAR | Lincoln Co. - Star Valley Branch | 1204 |
| LINC-THAY | Lincoln Co. - Thayne Branch Library | 12 |
| NATR | Natrona Co. Public Library | 01 |
| NATR-BKMBL | Natrona Co. - Bookmobile | 0102 |
| NATR-EDGE | Natrona Co. - Edgerton Branch | 0103 |
| NEHS | Newcastle High School | 39 |
| NIOB | Niobrara Co. Library | 14 |
| NMWA | National Museum of Wildlife Art Library | n/a |
| NWC | Northwest College - Hinckley Library | 31 |
| PARK | Park Co. Library | 11 |
| PARK-MEET | Park Co. Library - Meeteetse | 1103 |
| PARK-POWL | Park Co. Library - Powell | 1102 |
| PLAT | Platte Co. Library | 08 |
| PLAT-CHUG | Platte Co. - Chugwater Branch | 0802 |
| PLAT-GLEN | Platte Co. - Glendo Branch | 0803 |
| PLAT-GUER | Platte Co. - Guernsey Branch Library | 0804 |
| PRES | WYLD PRES (WYLD OFFICE USE) | |
| SHER | Sheridan Co. Fulmer Public Library | 03 |
| SHER-CLEAR | Sheridan Co. - Clearmont Branch | 0302 |
| SHER-STOR | Sheridan Co. - Story Branch | 0303 |
| SHER-TRIV | Sheridan Co. - Tongue River Branch | 0304 |
| SHRC | Sheridan College Kooi Library | 30 |
| SHRC-GILC | Gillette College Library | 3002 |
| SHVA | zUnused | |
| SUBL | Sublette Co. Library | 23 |
| SUBL-BIGP | Sublette Co. - Big Piney Branch | 2302 |
| SWTR | Sweetwater Co. - Green River | 04 |
| SWTR-BAIR | Sweetwater Co. - Bairoil Branch | 0403 |
| SWTR-FARSN | Sweetwater Co. - Farson Branch | 0404 |
| SWTR-GRAN | Sweetwater Co. - Granger Branch | 0405 |
| SWTR-RELI | Sweetwater Co. - Reliance Branch | 0406 |
| SWTR-RKSP | Sweetwater Co. - Rock Springs Library | 0408 |
| SWTR-SUPER | Sweetwater Co. - Superior Branch | 0407 |
| SWTR-WAMS | Sweetwater Co. - Wamsutter Branch | 04 |
| SWTR-WMTN | Sweetwater Co. - White Mtn Library | 0409 |
| TETN | Teton Co. Library | 22 |
| TETN-ALTA | Teton Co. - Alta Branch | 2202 |
| TETN-HIST | Teton Co. - Historical Soc Museum | 2203 |
| UINT | Uinta Co. Library | 19 |
| UINT-LYMAN | Uinta Co. - Lyman Branch | 19 |
| UINT-MTVW | Uinta Co. - Mtn View Branch | 19 |
| WASH | Washakie Co. Library | 20 |
| WASH-TENS | Washakie Co. - Ten Sleep Branch | 2002 |
| WEST | Weston Co. Library | 21 |
| WEST-UPTN | Weston Co. - Upton Branch | 2102 |
| WMC | WYLD staff test library | |
| WSDL | WY Services for the Deaf Library | 32 |
| WSL | Wyoming State Library | 24 |
| WSL-ARC | Wyoming State Archives - Barrett Building | 24 |
| WSL-LAW | Wyoming State Law Library | 2402 |
| WSL-WRDS | zUnused | |
| WWCC | Western Wy Community College - Hay Library | 27 |
| WYLD | WYLD Electronic Resources | |
| WYLD-ER | WYLD Online Documents | |
| YRL | Yellowstone Research Library | 42 |