City comparison
Chicago, IL is about 1,800 miles (3,000 km) from Union City, CA in a straight line. By road, the drive is roughly 2,300 miles, or about 38 hours (about 4 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 Chicago, IL to Union City, CA takes about 3 h 40 min, covering roughly 1,800 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.
Chicago, IL is on Central Time and Union City, CA is on Pacific Time — a 2-hour difference. When it's noon in Chicago, it's 10 a.m. in Union City, which puts Chicago 2 hours ahead.
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.
Chicago has a population of 2,721,914, vs 69,502 in Union City — about 39.2× larger by population. By land area, Chicago covers about 230 sq mi vs 19 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 | Chicago | Union City | Difference |
|---|---|---|---|
| Median rent | $1,314/mo | $2,593/mo | 97.3% higher in Union City |
| Median home value | $304,500 | $1,006,600 | 230.6% higher in Union City |
| Median household income | $71,673 | $138,013 | 92.6% higher in Union City |
| Groceries index | 106.4 | 108.1 | 1.6% higher in Union City |
| Utilities index | 84.4 | 168.3 | 99.5% higher in Union City |
| Transportation index | 100.3 | 106.1 | 5.7% higher in Union City |
| Healthcare index | 100.2 | 106.0 | 5.8% 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 Chicago, you'd need $143,393 in Union City to maintain your standard of living.
Climate, safety, and demographics side by side.
Chicago, IL is about 30.3% cheaper overall than Union City, CA, based on our cost-of-living index. Housing costs are roughly 76% higher in Union City than in Chicago. If you earn $80,000 in Chicago, you'd need about $114,714 in Union City to keep the same standard of living.