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Union Mill Virginia Map

Explore Union Mill, Virginia, 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 Union Mill, Virginia

How to Use This Union Mill, Virginia Map

This interactive map shows the street layout and satellite imagery for Union Mill, Virginia. 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 Virginia 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 Mill.

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 Mill
State	Virginia (VA)
County	Fairfax County
Country	United States of America
Timezone	Eastern Time (America/New_York)

Latitude	38.7978
Longitude	-77.3815
Population	4,997
Density	193.2 /km²
Incorporated	N/A
ZIP Codes	20124, 22039
Area Code	571, 703
County Seat	Fairfax
School District	Fairfax County Public Schools

🌦 Goto Union Mill Weather Page: Union Mill, Virginia — Weather Warnings, Forecast, Radar, Satellite & Current Conditions

About Union Mill, Virginia

Union Mill is a locality in Fairfax County, Virginia, United States. It has a population of approximately 4,997. The population density is 193.2 people per km². Union Mill is located at 38.7978°N, 77.3815°W. It observes the Eastern Time (America/New_York) timezone. ZIP codes: 20124, 22039.

Union Mill anchors its identity in the quiet topography of the Piedmont, where the land rises and falls in long, muscular swells of clay and shale. It lies 3.0 miles west of Fairfax Station, VA (from Fairfax Station, VA: bearing 266°T), and is situated 3.9 miles southeast of Centreville. Castle Creek carves a persistent, narrow path through the undergrowth here, its waters feeding the moisture into the soil that supports dense stands of hardwood. To the west, the faint, hazy silhouette of the Blue Ridge Mountains occasionally haunts the horizon when the air clears after a heavy summer rain. The proximity of Piney Branch Stream Valley Park preserves a wilder character, offering a dense thicket of green that moderates the heat of the afternoon sun, while the nearby Occoquan Reservoir exerts a gravitational pull on the local climate, keeping the morning mists thick and luminous until the day is well underway.

History in Union Mill remains etched into the very soil, a lingering echo of the industrial ambitions that once defined the crossroads of the Culpeper Basin. The economy has long since shifted from the agrarian traditions of the past to the measured, professional pace of the modern corridor, yet the infrastructure retains the memory of a time when the water provided the primary engine for labor. Commuters now move with a steady, quiet discipline, their daily routines overlaid upon a landscape that still feels the weight of its colonial and mid-century transitions. Even as the modern world reshapes the local economy, the stillness of the evening remains, characterized by the cooling earth and the sharp, clean scent of the woods that stretch toward the Conway-Robinson Memorial State Forest, reminding those who live here that the terrain is the oldest resident of all.

Nearby Outdoor Places

Piney Branch Stream Valley Park (Local Park) — 1.0 mi, 041° NE
Johnny Moore Stream Valley Park (Local Park) — 1.2 mi, 246° SW
Railroad Trestle (Historic Ruins) — 1.2 mi, 159° S
Webb Sanctuary (Conservation Area) — 1.5 mi, 200° S
Union Mills Historic Site (Historic Ruins) — 2.1 mi, 237° SW
Seniors 2020 Rock (Monument) — 2.5 mi, 319° NW
Blooms Park (Local Conservation Area) — 2.6 mi, 237° SW
Battle of Blackburn's Ford (1861) (Registered Battlefield) — 3.7 mi, 276° W
Uv Hotbox Graff (Public Artwork) — 4.0 mi, 063° NE
University Mall Theatres (Theatre) — 4.1 mi, 062° NE
Civil War Monument - Signal Hill (Monument) — 4.3 mi, 225° SW
Lake Burke Public Fishing Lake (State Recreation Area) — 4.4 mi, 116° SE
Confucius (Monument) — 4.4 mi, 060° NE
Lanes Mill Ruins (Viewpoint) — 4.6 mi, 297° NW
Fluffy Rides (Attraction) — 4.7 mi, 016° N
Bull Run Special Events Center (Attraction) — 4.7 mi, 286° W
Regal Fairfax Towne Center 10 (Cinema) — 4.9 mi, 009° N
Ellanor C. Lawrence Amphitheater (Theatre) — 5.1 mi, 328° NW
National Firearms Museum (Museum) — 5.1 mi, 029° NE
Bells Bird Sanctuary Park (Nature Reserve) — 5.4 mi, 048° NE
Fairfax Museum and Visitors Center (Museum) — 5.4 mi, 053° NE
Center for the Arts (Arts Centre) — 5.9 mi, 236° SW
Antique Railroad Cars (Museum) — 6.0 mi, 237° SW
Occoquan Bay National Wildlife Refuge (National Wildlife Refuge) — 12.6 mi, 145° SE · 1,268 acres
Mason Neck State Park (State Park) — 14.2 mi, 134° SE
George Washington Memorial Parkway (National Park) — 14.5 mi, 037° NE · 2,795 acres
Elizabeth Hartwell Mason Neck National Wildlife Refuge (National Wildlife Refuge) — 15.1 mi, 138° SE · 2,944 acres

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