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Historical Markers in Adel, Iowa
Adel is the county seat for Dallas County
Adel is in Dallas County
ADJACENT TO DALLAS COUNTY
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| On U.S. 6 0.2 miles west of Thin Blue Line Lane, on the right when traveling west. |
| On R Avenue north of Highway 6 (U.S. 6), on the right when traveling north. |
| On J Avenue (County Route P58) at 240th Street (Iowa Highway 44), on the right when traveling south on J Avenue. |
| Near Old Highway 6 0.5 miles east of Panther Creek Road, on the right when traveling east. |
Oct. 16, 2026