County GIS · State lines · October 20, 2026
Indiana–Michigan Border Counties: Parcel Maps on Both Sides
All 11 counties on the Indiana–Michigan line, with seats, 2023 populations and a link to each official parcel map, plus what changes at the state line.
Looking for the counties on the Indiana–Michigan border and their parcel maps? According to the Census Bureau's county adjacency file, 6 Indiana counties touch 5 Michigan counties along the line. Each one keeps its own property records and its own parcel viewer, so land near the line often means checking two counties in two states.
A farm, hunting tract or lake lot can sit in one state while the road, the neighbors or the rest of the property are in the other. This page lists every county that touches the line on either side, with links to each official parcel map.
Indiana–Michigan border at a glance
- Counties on the line: 11 (6 in Indiana, 5 in Michigan)
- With a verified public parcel viewer in our directory: 11 of 11
- Residents, 2023 estimates: about 842,122 on the Indiana side and 355,583 on the Michigan side
- Most populous on each side: St. Joseph County, IN (272,848) and Berrien County, MI (152,261)
- Largest by land area: LaPorte County, IN (598 sq mi) and Hillsdale County, MI (598 sq mi)
Indiana counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Elkhart County | Goshen | 463 | 206,409 | Beacon (Schneider Geospatial) |
| LaGrange County | LaGrange | 380 | 40,907 | Beacon (Schneider Geospatial) |
| LaPorte County | La Porte | 598 | 111,706 | Beacon (Schneider Geospatial) |
| Porter County | Valparaiso | 418 | 175,335 | ArcGIS Experience Builder |
| St. Joseph County | South Bend | 458 | 272,848 | ArcGIS Web AppBuilder |
| Steuben County | Angola | 309 | 34,917 | Beacon (Schneider Geospatial) |
Michigan counties on the line
| County | Seat | Land (sq mi) | 2023 pop. | Parcel viewer |
|---|---|---|---|---|
| Berrien County | St. Joseph | 568 | 152,261 | Beacon (Schneider Geospatial) |
| Branch County | Coldwater | 506 | 45,215 | ArcGIS Web AppBuilder |
| Cass County | Cassopolis | 490 | 51,642 | Beacon (Schneider Geospatial) |
| Hillsdale County | Hillsdale | 598 | 45,587 | ArcGIS Web AppBuilder |
| St. Joseph County | Centreville | 501 | 60,878 | county web map |
Which counties face each other
Here is who borders whom across the line, based on the Census Bureau adjacency file:
- Elkhart County, IN borders Cass County, MI, St. Joseph County, MI
- LaGrange County, IN borders Branch County, MI, St. Joseph County, MI
- LaPorte County, IN borders Berrien County, MI
- Porter County, IN borders Berrien County, MI
- St. Joseph County, IN borders Berrien County, MI, Cass County, MI
- Steuben County, IN borders Branch County, MI, Hillsdale County, MI
What changes when you cross the line
- Different viewers. On the Indiana side the official maps run on: Beacon (Schneider Geospatial) (4); ArcGIS Experience Builder (1); ArcGIS Web AppBuilder (1). On the Michigan side: Beacon (Schneider Geospatial) (2); ArcGIS Web AppBuilder (2); county web map (1). Search boxes, parcel ID formats and the details shown in pop-ups will differ.
- Different records offices. Deeds, plats and tax bills are kept by the county where the parcel sits.
- Different rules. Zoning, septic permits and property tax are set locally and by each state, so check with the county on the side where you plan to build or buy.
Researching a tract that crosses the line
- Find the parcel in both counties' viewers. Each side will show only its own piece, with its own parcel number.
- Pull the recorded deed from each county's register or recorder, since each county records only the land inside its own boundary.
- Expect two tax bills, one from each county, and check each state's rules for homestead or farm exemptions.
- For a sale, a fence or a building permit, hire a licensed surveyor familiar with the line; tax-map lines are drawings, not surveys.
A quick way to check which side a spot is on
Tap the spot on the Platbookmapper Land Map. Its land report names the county and links straight to that county's parcel viewer, plus FEMA flood, USGS elevation, USDA soil and wetland results.
Related guides
More: Indiana counties · Michigan counties
Sources
- U.S. Census Bureau county adjacency file, used for which counties share the line.
- U.S. Census Bureau Gazetteer files, 2020 county land area.
- U.S. Census Bureau, Population Estimates Program, county totals, Vintage 2023 (July 1, 2023 estimates)
- Platbookmapper county GIS directory (live data file behind our county pages, pulled October 20, 2026) for each county's official parcel viewer.
- County seats: Wikidata (county seat property), cross-checked against Census place names.