About South Boston
South Boston is a mid-sized city located in United States, in the Massachusetts region. According to the latest available data (2026), the population of South Boston is approximately 571,281 residents, making it the #121 most populous city in United States.
Globally, South Boston ranks #3,253 among the world's most populated cities.
South Boston City Statistics
| City | South Boston |
| Country |  United States |
| Population | 571,281 |
| Global Rank | #3,253 |
| Rank in United States | #121 of 867 cities |
| City Category | mid-sized city |
| Region | Massachusetts |
| Latitude | 42.2858 |
| Longitude | -71.1291 |
| Data Year | 2026 |
Population Comparison
To put South Boston's population of 571,281 into perspective:
- South Boston has over 571,000 residents.
Where is South Boston Located?
South Boston is located in United States, in the Massachusetts region, at coordinates 42.2858° latitude and -71.1291° longitude. Located in the mid-latitudes, South Boston experiences distinct four-season weather patterns.
Nearby Cities
Other Cities in United States
Largest Cities in United States
| # | City | Population |
|---|---|---|
| 1 | Harris County | 4,731,145 |
| 2 | Los Angeles | 3,898,747 |
| 3 | San Diego County | 3,298,634 |
| 4 | Brooklyn | 2,736,074 |
| 5 | Miami-Dade County | 2,701,767 |
Frequently Asked Questions
What is the population of South Boston?
The population of South Boston is approximately 571,281 residents according to the latest available data (2026).
Where is South Boston located?
South Boston is located in United States at approximately 42.2858° latitude and -71.1291° longitude.
Is South Boston one of the largest cities in United States?
With a population of 571,281, South Boston is one of the notable urban areas in United States. It ranks #121 out of 867 cities in the country.
