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Historical Markers in Mount Prospect
Chicago is the county seat for Cook County
Mount Prospect is in Cook County
ADJACENT TO COOK COUNTY Lake County, Indiana (125) ► Porter County, Indiana (113) ► Berrien County, Michigan (107) ►
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| On Maple Street south of Busse Avenue, on the right when traveling north. |
| On South Emerson Street near Busse Avenue, on the right when traveling south. |
| On Maple Street near Busse Avenue. |
| On Emerson Street at Busse Avenue, on the right when traveling south on Emerson Street. |
| On Emerson Street at Busse Avenue, on the right when traveling south on Emerson Street. |
| On Main Street (Illinois Route 83) near Lincoln Street, on the right. |
| On Emerson Street at Busse Street, on the right when traveling south on Emerson Street. |
| On South Emerson Street at Busse Avenue, on the right when traveling south on South Emerson Street. |
Nov. 10, 2026