Explore Grant County, Indiana with this interactive street and satellite map. Browse all 16 cities and towns in Grant County below.
| County | Grant |
| State | Indiana (IN) |
| County Seat | Marion |
| Country | United States of America |
| Latitude | 40.504812 |
| Longitude | -85.677609 |
| Cities & Towns | 16 |
| Area Codes | 574 |
Grant County occupies a portion of the north-central Indiana till plain, a landscape defined by the deliberate, patient work of ancient glaciers that left behind a fertile, heavy loam. The Mississinewa River serves as the primary artery, cutting a winding, wooded trench through the flat expanses of agricultural fields that stretch toward the horizon in a repetitive geometry of corn and soy. This is a country of wide, pale skies where the light at dusk flattens against the silos, turning the grain elevators into silhouettes of sharp, industrial purpose. To the north lie the flatter reaches of the glacial lake plains, while the southern stretches soften slightly as the land drains toward the larger river basins, creating a quiet mosaic of woodlots and drainage ditches that pulse with the seasonal thaw.
Grant County took its formal shape in the early nineteenth century, organized from territory ceded by indigenous nations who had long navigated the river corridors. The seat of government emerged at a central point chosen for its proximity to the river’s bend, a choice that anchored the civic life of the region around a courthouse square. Early settlers arrived primarily from the upland South and the mid-Atlantic states, bringing with them a pragmatic approach to clearing timber and breaking the prairie sod. Over time, the discovery of natural gas deposits beneath the surface sparked a sudden, intense period of expansion that transformed the architecture of the town centers, leaving behind a legacy of substantial brick facades and ornamental stonework that still bear the weight of that brief, gilded era of subterranean wealth.
Industry and agriculture define the daily movement of the people, though the air today carries a different weight than it did during the height of the gas boom. The character of the region remains rooted in a cautious, observant reserve, where the habit of neighborliness is measured in steady, quiet actions rather than grand displays. In the evenings, the glow from gymnasium lights often spills onto the pavement, signaling the recurring focus on a game that has become a necessary winter ritual. Landmarks here are not grand monuments but the persistent, functional structures of a working landscape—the long, low lines of manufacturing plants, the sturdy iron bridges spanning the river, and the vast, empty stretches of road where the wind moves unchecked across the stubble, carrying the clean, sharp scent of impending rain.
This page provides an interactive map of Grant County, Indiana alongside links to detailed street maps for 16 cities and towns. The county seat is Marion. Each city and town map page includes live weather, local news and precise GPS coordinates.
The Search Maps button below the county map opens USGS topographic maps and aerial imagery as base layers, with a labelled U.S. National Grid (USNG) overlay, a distance and bearing tool, and a single-fix GPS readout giving your USNG grid reference and latitude and longitude.
Location data is sourced from the USGS GNIS database and verified by coordinates, not name matching alone.
| Page generated | September 2026 |
| Location data | USGS GNIS database; coordinates matched to 2020 US Census records |