Garden County Assessor 611 Main St Oshkosh, NE 69154 Phone : (308) 772-4464 Business Category Public Finance Taxation & Monetary Policy Garden County Of--county Assessor Oshkosh, NE 69154 Phone : (308) 772-4464 Business Category Government Offices-County Government Offices & Public Schools Garden County Of--oshkosh, County Assessor Po Box 468 Oshkosh, NE 69154 Phone : (308) 772-4464 Business Category Government Offices-County Government Offices & Public Schools