Elevation of Union City, California, United States of America
Union City, California, United States of America is 6 m (20 ft) above sea level.
Union City's height from sea level is 6 metres, or 20 feet. GeoNames reads 19 m at the same point (SRTM); Wikidata records 21 m.
Ground within 5 km
Mean 34 m across the 9.1 km square centred on the town, 332 m from its lowest cell to its highest.
Rank by elevation
among the towns of California, and 960th of 1,000 in United States of America.
Cross-section through Union City
Ground elevation along two lines through the town, 25.8 km end to end, one cell (about 1 km) per step. The red dot is Union City; the vertical scale is the same on both.

Shading is a north-west light over the grid's own slopes. Colour follows elevation: sea level and below, 0–200 m, 500 m, 1,000 m, 2,000 m, 3,500 m, 5,000 m and above.
Towns near Union City
| Town | Distance | Direction | Elevation | Compared |
|---|---|---|---|---|
| Newark | 6.9 km | S | 5 m (16 ft) | −1 m |
| Fremont | 7 km | SE | 16 m (52 ft) | +10 m |
| Hayward | 9.1 km | N | 40 m (131 ft) | +34 m |
| Castro Valley | 11.9 km | N | 54 m (177 ft) | +48 m |
| Dublin | 15.6 km | NE | 113 m (371 ft) | +107 m |
Peaks and passes near Union City
- Mount Allison, peak at 793 m (2,602 ft), 18.6 km to the SE — 787 m above the town.
- Monument Peak, peak at 768 m (2,520 ft), 19.9 km to the SE — 762 m above the town.
- Mission Peak, peak at 761 m (2,497 ft), 17 km to the SE — 755 m above the town.
Summit heights from GeoNames (CC BY 4.0), within 25 km; only summits higher than the town are listed.
Where Union City is
Latitude 37.5919304, longitude -122.0456199. Open the map here to read the elevation of any point around the town.
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About this reading
The elevation is the value of the GMTED2010 terrain grid (USGS/NGA, 30 arc-second cells of about 1 km) at Union City's recorded coordinates. It is the height of the ground in that cell, not of any building; a town on a slope spans several cells, and the range above says how much that matters here. GeoNames' reading of 19 m comes from a finer 90 m SRTM grid at the point it records for the town, which may sit a few hundred metres from ours; the two agreeing to within a few metres is the usual case on flat ground, and a larger gap means the ground is steep. Wikidata's figure is the one its editors cite for the town, often from a survey marker or the town hall.