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Seneca Illinois Map

Explore Seneca, Illinois, 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.

Interactive Map of Seneca, Illinois

How to Use This Seneca, Illinois Map

This interactive map shows the street layout and satellite imagery for Seneca, Illinois. 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 Illinois 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 Seneca.

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	Seneca
State	Illinois (IL)
County	LaSalle County
Country	United States of America
Timezone	Central Time (America/Chicago)

Latitude	41.311144
Longitude	-88.609794
Population	2,353
Density	141.6 /km²
Incorporated	Yes
ZIP Codes	61360, 60450
Area Code	815, 708
County Seat	Ottawa
School District	Seneca Township High School District 160

🌦 Goto Seneca Weather Page: Seneca, Illinois — Weather Warnings, Forecast, Radar, Satellite & Current Conditions

About Seneca, Illinois

Seneca is a locality in LaSalle County, Illinois, United States. It has a population of approximately 2,353. The population density is 141.6 people per km². Seneca is located at 41.3111°N, 88.6098°W. It observes the Central Time (America/Chicago) timezone. Seneca is an incorporated locality. ZIP codes: 61360, 60450.

Seneca occupies a flat stretch of the Illinois River valley, where the horizon pulls wide and low, anchored by the rhythmic flow of the Rat Run. It lies 10.3 miles west-southwest of Morris, IL (from Morris, IL: bearing 252°T), and is situated 5.3 miles east-southeast of Marseilles. This landscape is a quiet expanse of prairie grasses and fertile soil, defined by a sky that seems to press closer to the earth than it does anywhere else. Only a mile away, the Seneca Hill Prairie serves as a remnant of the wilder, unplowed world, its grasses shivering in the constant wind that sweeps across the plains. Far off to the south, the distant silhouette of Sand Ridge (historic) rises like a dark, blurred thumb against the gray light of dusk, while the cooling towers near the LaSalle County Nuclear Station Cooling Pond loom as silent, industrial sentinels over the water.

Seneca keeps the steady, deliberate pace of a place built upon the labor of the river and the rail, maintaining a character forged by decades of heavy industry and agricultural commerce. The local economy persists in the shadow of the waterway, honoring a history of shipbuilding that once turned these quiet banks into a hive of activity during years of global conflict. Residents often look toward the Great Falls of the Illinois River, a reminder of the raw, kinetic power that has always dictated the movement of goods and people through this corridor. Life here feels grounded in the permanence of the terrain, where the turning of the seasons in the cornfields and the persistent, low hum of the nearby transit routes define the texture of a day.

Nearby Outdoor Places

Seneca Hill Prairie (State Conservation Area) — 1.0 mi, 338° N
Illinois and Michigan Canal State Trail (State Recreation Area) — 1.2 mi, 055° NE
Lasalle Lake State Fish and Wildlife Area (Conservation Area) — 3.1 mi, 188° S
Illini State Park (State Park) — 4.5 mi, 276° W
Unknown Park (Local Park) — 5.0 mi, 282° W
Middle East Conflicts Memorial Wall (Monument) — 5.4 mi, 280° W
Marseillis Community Hall & Pool (Local Recreation) — 5.6 mi, 283° W
Marseilles Little League (Local Recreation) — 5.8 mi, 283° W
Morris Guild Theater Playhouse (Theatre) — 9.9 mi, 071° E
Grundy County Historical Society (Museum) — 9.9 mi, 072° E
Karen R. Olson Memorial (Monument) — 10.0 mi, 072° E
Heidecke Lake State Fish and Wildlife Area (State Conservation Area) — 10.0 mi, 077° E
Dayton Bluffs Preserve (Local Conservation Area) — 10.1 mi, 296° NW
Old Train Caboose (Monument) — 10.3 mi, 069° E
CSX Morris Depot (Attraction) — 10.3 mi, 069° E
Fox River (State Park) — 10.5 mi, 287° W
Park in Grundy County (Local Park) — 11.8 mi, 168° S
Boy Scout of America (Public Artwork) — 13.3 mi, 278° W
Fern Dell Museum (Museum) — 15.7 mi, 005° N
Illinois Canyon (Viewpoint) — 17.1 mi, 268° W
ATSF Depot (Attraction) — 17.1 mi, 221° SW
Gardner Jail (Attraction) — 18.0 mi, 118° SE
Route 66 Diners (Attraction) — 18.0 mi, 118° SE
Engle Lane Theater (Theatre) — 18.9 mi, 223° SW
Plum Island Site (Historic Ruins) — 20.0 mi, 273° W
Midewin Other (National Forest) — 20.3 mi, 075° E · 18k acres
Braidwood Area Historical Society (Museum) — 20.6 mi, 099° E
Matthiessen State Park (Nature Reserve) — 21.6 mi, 267° W
Starved Rock Nature Preserve (Nature Reserve) — 22.3 mi, 271° W
Classic Cinemas Cinema 7 (Cinema) — 23.2 mi, 001° N

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