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Boulder Illinois Map

Explore Boulder, 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 Boulder, Illinois

How to Use This Boulder, Illinois Map

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

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

Latitude	38.696715
Longitude	-89.225627
Population	480
Density	18.0 /km²
Incorporated	N/A
ZIP Code	62231
Area Code	217
County Seat	Carlyle

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

About Boulder, Illinois

Boulder is a locality in Clinton County, Illinois, United States. It is a small community with a population of 480. The population density is 18.0 people per km². Boulder is located at 38.6967°N, 89.2256°W. It observes the Central Time (America/Chicago) timezone. ZIP code: 62231.

Boulder emerges from the flat, expansive horizon where the golden stalks of corn and soybeans meet the sky in a vast, quiet geometry. It lies 12.9 miles north-northwest of Centralia, IL (from Centralia, IL: bearing 337°T), and is situated 9.9 miles northeast of Carlyle. Brewster Creek winds through this landscape with a slow, deliberate grace, carving a narrow path that draws the eye toward the shimmering expanse of Carlyle Lake. On clear days, the distant, hazy silhouette of the Pelican Pouch rises against the western sky, a reminder of the tectonic shifts that once shaped this plains-heavy earth. The air here holds a particular, heavy stillness at dusk, when the light turns the color of pale wheat and the shadows of the fields stretch long and thin across the dirt roads.

Boulder maintains a steady pulse defined by the rhythms of the seasons and the cycle of the harvest, anchoring its identity in the deep, fertile soil of the Illinois prairie. The economy remains rooted in the bounty of the surrounding farmland, though the presence of Carlyle Lake draws those seeking a quiet respite within the expansive grounds of the recreation area. Residents often venture out to the Chipmunk Trail to witness the changing colors of the woodland, finding a familiar solace in the way the wind moves through the tall grasses. History persists here not in grand monuments, but in the sturdy architecture of local structures and the persistent, unpretentious labor of those who continue to work the land as their predecessors did.

Nearby Outdoor Places

Carlyle Lake (Recreation Area) — 0.2 mi, 327° NW
East Fork Management Unit State Fish and Wildlife Area (State Conservation Area) — 2.6 mi, 041° NE
Party Cove (Attraction) — 3.1 mi, 296° NW
Eldon Hazlet (State Recreation Area) — 4.0 mi, 260° W
Carlyle Lake State Fish and Wildlife Area (State Conservation Area) — 8.2 mi, 021° N
Carlyle Parks & Recreation (Local Recreation) — 9.1 mi, 232° SW
Kaskaskia River - Carlyle (Conservation Area) — 9.3 mi, 230° SW
Unknown Park (Local Park) — 10.8 mi, 124° SE
T-33 Shooting Star (Monument) — 12.0 mi, 161° S
Nike Ajax Missile (Monument) — 12.2 mi, 160° S
Foundation Park (Local Park) — 12.6 mi, 152° SE
Third Principal Meridian (Monument) — 16.0 mi, 164° S
Greenville University Factory Theatre (Theatre) — 16.4 mi, 323° NW
Ladue Auditorium (Theatre) — 16.8 mi, 324° NW
Richard W. Bock Sculpture Museum (Museum) — 16.8 mi, 324° NW
Kids Playing: Eva Marie & Jimmy (Public Artwork) — 16.8 mi, 324° NW
Vandalia State House State Historic Site (Museum) — 19.6 mi, 021° N
Fayette County Museum (Museum) — 19.7 mi, 021° N
Kaskaskia Dragon (Attraction) — 20.0 mi, 016° N
Stephen A. Forbest State Recreation Area (State Recreation Area) — 23.6 mi, 084° E
Stephen A. Forbes State Recreation Area (Nature Reserve) — 24.1 mi, 085° E
Carl L Schweinfurth Museum and Interpretive Center (Museum) — 29.9 mi, 147° SE
Lookout Point (Viewpoint) — 30.3 mi, 194° S
Cedarhurst Center for the Arts (Arts Centre) — 30.3 mi, 147° SE
Browns Mound (Historic Ruins) — 36.6 mi, 271° W
Henry's Rabbit Ranch (Attraction) — 36.7 mi, 306° NW
O'Fallon Historical Society (Museum) — 37.7 mi, 259° W
Pyramid State Recreation Area (State Park) — 43.9 mi, 193° S
Big Muddy National Fish And Wildlife Refuge (National Wildlife Refuge) — 50.8 mi, 281° W · 32k acres
Shawnee National Forest (National Forest) — 60.4 mi, 193° S · 274k acres

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