Explore Decker, Indiana, with this interactive street and satellite map.
This page also offers TOPO MAPS — the official USGS topographic sheets — plus USGS aerial imagery, a labelled USNG grid overlay, a distance and bearing tool, and a GPS grid-reference readout. See How to Use This Map below.
This interactive map shows the street layout and satellite imagery for Decker, Indiana. Use the Map and Satellite buttons above to switch between street map and aerial imagery views. Use the + and − buttons to zoom in or out, or scroll your mouse wheel while holding the Control key to zoom. On a touchscreen, use a two-finger pinch gesture. Drag the map to pan to any area of Indiana or beyond.
Click ⛶ Fullscreen to expand the map to fill your screen. To return to the normal page view, press the Escape key, click the ✕ Exit Fullscreen button that appears above the map, or on a mobile device tap the back button (Android) or the close icon (iOS).
TOPO MAPS — NEW. Click the green 🔍 Search Maps button below the map to open a second map with a Base map row offering three choices. OSM is the standard OpenStreetMap street map. Topo shows the official USGS topographic maps from The National Map — contours, hydrography, land cover and shaded relief, the same mapping used for hiking, hunting and back-country navigation in the Adirondacks, the Catskills and the Finger Lakes. Imagery shows USGS aerial photography, mostly 1-metre NAIP. The search box finds any US town, county or landmark by name, so you are not limited to Decker.
Reading the map like a paper quad. Click Grid to overlay the U.S. National Grid (USNG), labelled along the edges exactly as a printed topographic sheet is — at normal zoom the squares are one kilometre across, so you can read a six-figure grid reference by eye and judge distance directly off the map. Click Measure, then tap two points, to get the distance between them together with the grid bearing in degrees and mils, the true bearing, and the magnetic bearing to set on a compass.
Click 📍 My position to take a single GPS reading from your device. It marks where you are and reports your position as a USNG grid reference as well as plain latitude and longitude — USNG being the format FEMA and US search and rescue teams work from — with a Copy position button so you can paste it straight into a text message. It takes one reading and stops, rather than tracking continuously, to conserve your battery. Note that map tiles need cell coverage, but a GPS reading does not — your coordinates stay correct even where the map itself cannot load.
| City | Decker |
| State | Indiana (IN) |
| County | Knox County |
| Country | United States of America |
| Timezone | Eastern Time (America/Indiana/Vincennes) |
| Latitude | 38.518936 |
| Longitude | -87.523078 |
| Population | 199 |
| Density | 424.5 /km² |
| Incorporated | Yes |
| ZIP Code | 47524 |
| Area Code | 812 |
| County Seat | Vincennes |
| School District | South Knox School Corporation |
Decker emerges from the flat, industrious stretches of the Indiana plains where the horizon pulls the sky tight against the soil. It lies 10.9 miles south of Vincennes, IN (from Vincennes, IN: bearing 178°T), and is situated 6.0 miles northwest of Union. Plass Ditch cuts a quiet, straight line through the fields, acting as a deliberate vein that drains the heavy earth and dictates the geometry of the surrounding acreage. To the east, the Dicksburg Hills rise as a modest, forested interruption in the vast agricultural grid, their slopes casting long, cool shadows across the cornrows as the sun begins its descent. The air here holds a distinct, earthy weight, smelling of turned loam and the lingering heat of midday, while the distant, expansive flatness of the Vincennes Prairie reminds travelers of the ancient, glacial leveling that shaped this particular stretch of the Midwest.
Decker remains defined by the rhythm of the harvest and the steady labor of those who work the productive silt-loam, maintaining a heritage built upon the endurance of the family farm. Life here moves in sync with the seasonal rotation of crops, a cycle that lends a deliberate, unadorned quality to the days spent between the local woodlots and the open fields. While the Wabash River - Mount Carmel area serves as a nearby sanctuary for those seeking the quietude of the riverbanks, the people of Decker find their own solace in the reliable stillness of the local landscape. Even the nearby Swan Pond reflects the same muted, honest light that characterizes the region, grounding the residents in a place where the work is tangible and the history is written in the depth of the topsoil.
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This page provides an embedded street and satellite map of Decker, Indiana. Coordinates: 38.518936, -87.523078. Live weather conditions are sourced directly from the National Weather Service. Real-time local and world news feeds keep the page current.
Detailed location data for Decker includes the ZIP code (47524), telephone area code (812), county seat of Knox County (Vincennes), and school district assignment (South Knox School Corporation).
Search Maps opens a second, independent map. It searches OpenStreetMap for any US town, county or landmark by name; offers USGS topographic maps and USGS aerial imagery as base layers; overlays a labelled U.S. National Grid (USNG) so the map can be read like a printed topographic quad; measures distance and grid, true and magnetic bearings between any two points; and takes a single GPS fix reporting your position as a USNG grid reference and as latitude and longitude. Map tiles require cell coverage, but a GPS position does not, so the coordinates remain correct even where the map cannot load.
Location data is drawn from the USGS Geographic Names Information System (GNIS) and cross-verified against 2020 US Census records by coordinate proximity. Population figures are sourced from the 2020 US Census.
| Page generated | September 2026 |
| Location data | SimpleMaps US Cities Database; coordinates matched to USGS GNIS definitive data |
| Map layers | Google Maps; © OpenStreetMap contributors; USGS The National Map topographic and aerial imagery (public domain); magnetic declination from NOAA NCEI (World Magnetic Model) |
| Wikipedia validation | Article content matched to USGS GNIS coordinates via Wikipedia geosearch API. |