City comparison
San Antonio, TX is about 1,600 miles (2,500 km) from Union City, NJ in a straight line. By road, the drive is roughly 2,000 miles, or about 33 hours (about 3 days at 10 h/day) behind the wheel at highway speeds.
Driving distance is a rough estimate (great-circle × 1.25); driving time assumes a 60 mph blended average. Real trips run 10–20% longer with stops.
A direct flight from San Antonio, TX to Union City, NJ takes about 3 h 10 min, covering roughly 1,600 miles in a straight line. Connecting itineraries with a layover typically add 1–3 hours.
Block-to-block estimate at ~500 mph cruise, including taxi, climb, and descent — what an airline would publish, not pure airborne time.
San Antonio, TX is on Central Time and Union City, NJ is on Eastern Time — a 1-hour difference. When it's noon in San Antonio, it's 1 p.m. in Union City, which puts San Antonio 1 hours behind.
Standard-time offsets. Daylight saving applies in both cities for most of the year (exceptions: Hawaii and most of Arizona), and the gap between the two stays the same.
San Antonio has a population of 1,445,662, vs 67,258 in Union City — about 21.5× larger by population. By land area, San Antonio covers about 500 sq mi vs 1.3 sq mi for Union City.
Population from US Census ACS. Land area from the Census Gazetteer (city proper, excluding inland water).
Cost indices by category, with the US city average (100) marked.
Index: 100 = US city average. Lower is more affordable.
Side-by-side costs, salaries, and sub-category indices.
| Metric | San Antonio | Union City | Difference |
|---|---|---|---|
| Median rent | $1,189/mo | $1,415/mo | 19.0% higher in Union City |
| Median home value | $198,000 | $448,000 | 126.3% higher in Union City |
| Median household income | $59,593 | $59,967 | 0.6% higher in Union City |
| Groceries index | 94.2 | 109.4 | 16.2% higher in Union City |
| Utilities index | 83.3 | 124.5 | 49.5% higher in Union City |
| Transportation index | 96.6 | 105.0 | 8.6% higher in Union City |
| Healthcare index | 96.1 | 105.7 | 10.0% higher in Union City |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in San Antonio, you'd need $132,430 in Union City to maintain your standard of living.
Climate, safety, and demographics side by side.
San Antonio, TX is about 24.5% cheaper overall than Union City, NJ, based on our cost-of-living index. Housing costs are roughly 54% higher in Union City than in San Antonio. If you earn $80,000 in San Antonio, you'd need about $105,944 in Union City to keep the same standard of living.