Explore Union, 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.
This interactive map shows the street layout and satellite imagery for Union, 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 Union.
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 | Union |
| State | Illinois (IL) |
| County | McHenry County |
| Country | United States of America |
| Timezone | Central Time (America/Chicago) |
| Latitude | 42.231567 |
| Longitude | -88.54478 |
| Population | 551 |
| Density | 254.5 /km² |
| Incorporated | Yes |
| ZIP Codes | 61532, 62635, 60433, 60180 |
| Area Code | 708, 312, 773 |
| County Seat | Woodstock |
| School District | Marengo-Union Elementary Consolidated District 165 |
Union unfolds across a broad, level expanse of Illinois farmland where the horizon remains wide and uninterrupted by the reach of any distant mountain peak. It lies 7.4 miles northwest of Huntley, IL (from Huntley, IL: bearing 308°T), and is situated 7.4 miles southwest of Woodstock. The South Branch Kishwaukee River carves a narrow, winding path through the soil just a mile away, its presence marked by a subtle deepening of the green in the grasses that line the banks. Near the HUM Railroad Prairie East, the air carries the scent of turned earth and dry stalks, a reminder that the land here is primary and enduring. In the quiet hours before dusk, the light stretches across the fields, turning the gray-toned gravel of the secondary roads into ribbons of pale silver that lead toward the solitude of the open plain. Four miles distant, the waters of Eddy Lake hold the reflection of the sky, acting as a mirror for the shifting clouds that drift over this inland stretch of the Midwest.
Union preserves a deliberate connection to its origins through the iron and wood of the Illinois Railway Museum, where the history of transit is kept in motion rather than left to gather dust. This focus on mechanical heritage defines the local character, grounding the economy in the maintenance of memory and the steady, rhythmic labor of the surrounding agricultural tracts. While the pace of daily life is dictated by the seasons of the crops and the turning of the gears, there is an underlying stillness that permeates the streets, as if the town itself is listening to the distant hum of the modern world without feeling the need to join it. Seventeen miles out, the Camelback Kame rises as a singular geological curiosity, a point of elevation that anchors the eye when the flat, fertile ground threatens to lose itself in the vastness of the sky.
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This page provides an embedded street and satellite map of Union, Illinois. Coordinates: 42.231567, -88.54478. 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 Union includes the ZIP code (61532, 62635, 60433), telephone area code (708, 312, 773), county seat of McHenry County (Woodstock), and school district assignment (Marengo-Union Elementary Consolidated District 165).
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. |