Public Research

Illinois-Indiana State Line Boundary Marker

built 1838 and with current city data crediting Office of the United States Surveyor-General, Designated as a Chicago landmark on September 4, 2002. it becomes easier to follow commercial development, architectural branding, and later change at Illinois-Indiana State Line Boundary Marker.

Illinois-Indiana State Line Boundary Marker Avenue G, near 103rd St, Chicago, Illinois Precision: Exact

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Quick Take

  • Official status: Chicago individual landmark.
  • Address: Avenue G, near 103rd St.
  • Built: 1838.
  • Architect: Office of the United States Surveyor-General.

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Why It Matters

Illinois-Indiana State Line Boundary Marker prevents commercial development, architectural branding, and corridor and downtown change from floating free of the site itself.

Once that baseline is in place, the site can support deeper work on stewardship, alteration, public memory, and the larger corridor or block around it.

Field Network

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Research Narrative

Landmark Context

Illinois-Indiana State Line Boundary Marker comes into public view at Avenue G, near 103rd St in the Chicago landmark record. The designation record holds onto a construction date of 1838 and credits Office of the United States Surveyor-General. It was designated on September 4, 2002. Illinois-Indiana State Line Boundary Marker can be read through commercial development, architectural branding, and corridor and downtown change without losing sight of the actual site.

Illinois-Indiana State Line Boundary Marker becomes easier to read on site when attention turns to storefront depth, upper-floor expression, and corner treatment, how the facade addresses pedestrian traffic, and later signage, infill, or reuse. That kind of reading often reveals how commercial architecture stayed visible even as the economic life around it changed.

Research Starting Points

Illinois-Indiana State Line Boundary Marker starts to deepen once research reaches trade press and city directories, permit files and assessor records, and historic photographs and newspaper coverage. Those materials are where architecture, use, and later stewardship begin to line up against each other.

Illinois-Indiana State Line Boundary Marker still needs deeper source work, but the landmark record already keeps that work tied to one place.

Public Actions

Campaign / Petition Record

Ordered oldest to newest.

1838

Development

Construction period recorded in city landmark data

Chicago's public landmark data records Illinois-Indiana State Line Boundary Marker as built in 1838.

September 4, 2002

Designation

Chicago individual landmark designation

City of Chicago designated Illinois-Indiana State Line Boundary Marker as an individual landmark on September 4, 2002.

February 2026

Inventory

City landmark address list and data portal record

Illinois-Indiana State Line Boundary Marker remains listed in Chicago's public individual-landmark address list and open-data record.

Signals

Latest Google News

Latest 3 stories

Illinois-Indiana State Line Boundary Marker, Chicago, Illinois

Research article pages show a recent coverage slice. Paid subscribers can use Signals inside the workspace for longer results and additional follow-up tools around the place.

Sources

Source Trail

Chicago Landmark Name List 2025.6

institution

Use for official landmark status and naming.

City of Chicago Open Data: Individual Landmarks

dataset

Use for address, built date, architect, and point geometry in the city data portal.

Chicago Landmark Address List February 2026

institution

Use for address normalization and cross-checking the city's public landmark list.

Place Snapshot

Place
Illinois-Indiana State Line Boundary Marker
Location
Avenue G, near 103rd St, Chicago, Illinois
Coverage
Exact

Key Facts

Region
Chicago, Illinois / Midwest
Place type
Commercial Building
Current status
Preserved
Address
Avenue G, near 103rd St
Built
1838
Architect
Office of the United States Surveyor-General
Designated
September 4, 2002

Design / Planning Timeline

Office of the United States Surveyor-General
1838

Milestone

Use as a starting point for confirming authorship against permits, drawings, and later landmark reports.

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