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South Monrovia Island California Map

Explore South Monrovia Island, California, 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 South Monrovia Island, California

How to Use This South Monrovia Island, California Map

This interactive map shows the street layout and satellite imagery for South Monrovia Island, California. 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 California 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 South Monrovia Island.

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	South Monrovia Island
State	California (CA)
County	Los Angeles County
Country	United States of America
Timezone	Pacific Time (America/Los_Angeles)

Latitude	34.1234
Longitude	-117.9958
Population	6,515
Density	4590.2 /km²
Incorporated	N/A
ZIP Codes	91010, 91016
Area Code	310, 424
County Seat	Los Angeles
School District	Duarte Unified School District

🌦 Goto South Monrovia Island Weather Page: South Monrovia Island, California — Weather Warnings, Forecast, Radar, Satellite & Current Conditions

About South Monrovia Island, California

South Monrovia Island is a locality in Los Angeles County, California, United States. It has a population of approximately 6,515. The population density is 4590.2 people per km². South Monrovia Island is located at 34.1234°N, 117.9958°W. It observes the Pacific Time (America/Los_Angeles) timezone. ZIP codes: 91010, 91016.

South Monrovia Island sits firmly upon the inland plains where the earth holds the heat of the afternoon long after the sun has begun its descent. It lies 1.5 miles southwest of Duarte, CA (from Duarte, CA: bearing 224°T), and is situated 8.7 miles east of Pasadena. The Sawpit Wash defines the local drainage, carving a dry, gravel-strewn path that pulses with seasonal runoff during the rare, heavy rains of winter. To the north, the San Gabriel Mountains rise as a jagged, purple silhouette against the sky, their presence a constant reminder of the geological pressures that shaped this basin. Just two miles away, the rugged terrain of Scott Canyon offers a stark contrast to the flatter, sun-bleached stretches of the immediate landscape. The atmosphere here carries the dry, resinous scent of wild sage, particularly as the golden hour light deepens the shadows across the parched ground.

South Monrovia Island grew from the ambition of early settlers who recognized the potential of these alluvial soils for sustenance and expansion. The local economy shifted over decades from modest agricultural ventures to the disciplined rhythms of light manufacturing and regional commerce, tethered to the steady pulse of the inland transport grid. Modern industrial spaces now occupy the legacy of those initial plots, maintaining a quiet, functional purpose that mirrors the work ethic of the surrounding basin. Prosperity in South Monrovia Island remains tied to the capacity of the land to support infrastructure while resisting the encroaching aridness of the regional climate. Workers here navigate a landscape shaped by the necessity of water management, observing the quiet survival of native scrub as it waits for the next cycle of rain.

Cultural character in South Monrovia Island is defined by a deliberate, measured pace that favors steady persistence over the frantic energy of denser metropolitan hubs. Pamela County Park serves as the central gathering point, providing a shared space where the community finds refuge beneath the shade of drought-tolerant trees. Residents often venture toward the distant, cooling heights of the San Gabriel Mountains or seek the solitude of the Upper Winter Creek Trail for a connection to the high-country air. While the region remains distinct from the sprawling urban centers, it holds its own quiet history, marked by those who have quietly contributed to the regional identity without seeking the glare of fame. The evening air often brings a sudden, sharp clarity, cooling the pavement and settling over the yards as the day’s heat finally surrenders to the coming dark.

Nearby Outdoor Places

Pamela County Park (Local Park) — 0.1 mi, 112° E
Longden Avenue Park (Local Park) — 0.8 mi, 226° SW
Santa Fe Reservoir (Recreation Area) — 1.4 mi, 106° E
San Gabriel River and Bike Trail (Local Recreation) — 1.6 mi, 146° SE
Santa Fe Dam Recreation Area (Local Recreation) — 2.1 mi, 100° E
Monrovia Wilderness Preserve (Local Conservation Area) — 2.5 mi, 017° N
Angeles Other (National Forest) — 2.6 mi, 308° NW · 400 acres
The "M" (Attraction) — 2.6 mi, 336° NW
Gilb Museum Of Arcadia Heritage (Museum) — 2.8 mi, 282° W
Duarte Wilderness Preserve (Local Conservation Area) — 2.9 mi, 046° NE
A Dawn in the West (Monument) — 2.9 mi, 281° W
San Gabriel Mountains National Monument (National Monument) — 3.1 mi, 020° N · 454k acres
Angeles National Forest (National Forest) — 3.1 mi, 020° N · 662k acres
Viewing Platform (Viewpoint) — 3.7 mi, 290° W
Monrovia Canyon Park (Nature Reserve) — 3.7 mi, 007° N
Halona Art & Culture Center (Gallery) — 3.9 mi, 253° W
In-N-Out Burger Museum (Museum) — 3.9 mi, 163° S
Creative Arts Group (Arts Centre) — 4.3 mi, 311° NW
Five Minimalist Poems (Public Artwork) — 4.3 mi, 277° W
Sierra Madre Memorial Wall (Monument) — 4.4 mi, 307° NW
Sierra Madre Memorial Cannon (Attraction) — 4.4 mi, 307° NW
Mount Wilson Trail (Monument) — 4.4 mi, 316° NW
Lizzies Trail Inn (Museum) — 4.4 mi, 316° NW
Pasadena Art School (Arts Centre) — 4.5 mi, 277° W
Wisteria Vine, Worlds Largest Blossoming Plant (Attraction) — 4.8 mi, 313° NW
Deer Park Lodge (Historic Ruins) — 5.2 mi, 019° N
Cabin ruins (Historic Ruins) — 5.6 mi, 319° NW
Duke Art Gallery (Gallery) — 5.9 mi, 082° E
San Gabriel Wilderness (Wilderness Area) — 8.1 mi, 001° N · 36k acres
Pleasant View Ridge Wilderness (Wilderness Area) — 15.3 mi, 005° N · 27k acres

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