Union Mill Virginia Map

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.

About This Union Mill Map Page

This page provides an embedded street and satellite map of Union Mill, Virginia. Coordinates: 38.7978, -77.3815. 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 Mill includes the ZIP code (20124, 22039), telephone area code (571, 703), county seat of Fairfax County (Fairfax), and school district assignment (Fairfax County Public Schools).

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.