Explore Old Monroe, Missouri, 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 Old Monroe, Missouri. 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 Missouri 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 Old Monroe.
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 | Old Monroe |
| State | Missouri (MO) |
| County | Lincoln County |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 38.931718 |
| Longitude | -90.746792 |
| Population | 249 |
| Density | 392.4 /km² |
| Incorporated | Yes |
| ZIP Code | 63369 |
| Area Code | 314 |
| County Seat | Troy |
| School District | Winfield R-IV School District |
Old Monroe emerges from the flat expanse of the Mississippi floodplain, where the Cuivre River carves a slow, deliberate path through the heavy, dark soil. It lies 8.7 miles north-northwest of OFallon, MO (from OFallon, MO: bearing 343°T), and is situated 8.7 miles north-northwest of O'Fallon. The landscape maintains a quiet, persistent tension between the cultivated fields that stretch toward the horizon and the untamed brush that gathers along the riverbanks, where the light at dusk turns the humid air into a thick, golden syrup. To the west, the distant, hazy silhouette of Cap Au Gris provides the only vertical interruption to a skyline dominated by grain silos and the vast, unobstructed reach of the Missouri sky. Travelers passing through might notice how the water of Horseshoe Lake sits perfectly still in the quietude, reflecting the changing colors of the seasons without a ripple to disturb the surface.
Old Monroe carries the weight of an agricultural heritage that once relied heavily on the fertile silt deposited by the seasonal flooding of the nearby waterways. The local economy remains tethered to the land, maintaining a steady, plain-spoken pace that values the harvest and the maintenance of the homestead over the frantic pace of the nearby urban centers. Beyond the immediate reach of the fields, the Cuivre Island Conservation Area preserves a fragment of the wilder, riparian environment that once defined this entire basin. Deep in the quietude of Bond Hollow, the land retains an older, more solitary character, far removed from the bustle of the rail lines and the small-town rhythm that dictates the morning commute.
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This page provides an embedded street and satellite map of Old Monroe, Missouri. Coordinates: 38.931718, -90.746792. 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 Old Monroe includes the ZIP code (63369), telephone area code (314), county seat of Lincoln County (Troy), and school district assignment (Winfield R-IV School District).
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. |