Contact information for the WIC office, Winnebago County Health Department. This WIC clinic is located in Oshkosh Wisconsin. The WIC program in Wisconsin helps provide supplemental foods, health care referrals and nutrition education for low-income pregnant, breastfeeding and non-breastfeeding postpartum women. If you are planning to apply for WIC benefits at Winnebago County Health Department, then you may need to provide proof of income, proof of AHCCCS, TANF, food stamps or Section 8 participation that meets the WI WIC income guidelines and proof of residence or identity. To find out more contact the office below.