Union County property record offices
Assessor, Recorder and Treasurer offices for Union County, South Dakota, with a link to each office's official website or records search.
Union County Assessor
Phone: (605) 356-2252
Union County Recorder
Phone: (605) 356-2191
Union County Treasurer
Phone: (605) 356-2391
Union County 2026 loan limits
1 unit: conforming $832,750, FHA $541,287
2 units: conforming $1,066,250, FHA $693,050
3 units: conforming $1,288,800, FHA $837,700
4 units: conforming $1,601,750, FHA $1,041,125
Metro area: SIOUX CITY, IA-NE-SD. Median price: $285,000