The following table shows US metropolitan statistical areas (MSAs) with a population of at least one million and a population density of at least 300 km-2, using 2016 population estimates from the US Census Bureau, as compared with the metropolitan Helsinki area in Finland (using 2015 population and density figures from the Wikipedia article Greater Helsinki). Note that some US MSAs may contain Metropolitan Divisions closer in population or density to Helsinki, but I did not have area figures for Metropolitan Divisions so they are excluded from the comparison.
See the full table (for metros over 100,000 population) ordered by density or by population.
| Pop. Rank | CBSA Name | Est. Population | Density (km-2) | Dens. Rank |
|---|---|---|---|---|
| 1 | New York-Newark-Jersey City, NY-NJ-PA | 20153600 | 937.9 | 2 |
| 2 | Los Angeles-Long Beach-Anaheim, CA | 13310400 | 1059.6 | 1 |
| 3 | Chicago-Naperville-Elgin, IL-IN-WI | 9513000 | 510.2 | 9 |
| 4 | Dallas-Fort Worth-Arlington, TX | 7233320 | 300.9 | 24 |
| 5 | Houston-The Woodlands-Sugar Land, TX | 6772470 | 316.5 | 20 |
| 6 | Washington-Arlington-Alexandria, DC-VA-MD-WV | 6131980 | 378.9 | 18 |
| 7 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD | 6070500 | 509.1 | 10 |
| 8 | Miami-Fort Lauderdale-West Palm Beach, FL | 6066390 | 461.4 | 12 |
| 10 | Boston-Cambridge-Newton, MA-NH | 4794450 | 530.9 | 8 |
| 11 | San Francisco-Oakland-Hayward, CA | 4679170 | 729.0 | 3 |
| 14 | Detroit-Warren-Dearborn, MI | 4297620 | 426.6 | 13 |
| 17 | San Diego-Carlsbad, CA | 3317750 | 304.4 | 22 |
| 18 | Tampa-St. Petersburg-Clearwater, FL | 3032170 | 465.5 | 11 |
| 21 | Baltimore-Columbia-Towson, MD | 2798890 | 415.3 | 15 |
| 32 | Cleveland-Elyria, OH | 2055610 | 396.9 | 16 |
| 38 | Providence-Warwick, RI-MA | 1614750 | 392.7 | 17 |
| 39 | Milwaukee-Waukesha-West Allis, WI | 1572480 | 417.2 | 14 |
| Greater Helsinki | 1441601 | 389.9 | ||
| 47 | Hartford-West Hartford-East Hartford, CT | 1206840 | 307.5 | 21 |
| Helsinki urban area | 1125136 | 1460.7 |