Population density tells you how many people live in each unit of land area. It is one of the quickest ways to understand whether a place feels like a busy urban core, a quiet suburb, or a rural community.

By the UsCityDex editorial team · Updated 2026-11-09

How is population density calculated?

Density is the number of residents divided by the land area. If a city has 50,000 people and covers 25 square miles, its density is 2,000 people per square mile. The figure depends heavily on where the boundary is drawn. A city that includes large parks, farmland or water inside its limits will have a lower density than a compact city of the same population.

Why does this website show square kilometers and square miles?

The source data reports density in people per square kilometer, which is the international standard. Americans are more used to square miles, so each city page converts the value. One square mile equals about 2.59 square kilometers, so you multiply a kilometer-based density by 2.59 to get people per square mile. For example, a place with 1,000 people per square kilometer has about 2,590 per square mile.

What density counts as urban, suburban or rural?

There is no single legal threshold, and different agencies use different definitions. For simple comparison, this website uses four editorial labels based on people per square mile:

• Urban core: more than 5,000 people per square mile, typical of dense neighborhoods with apartment buildings and walkable streets.
• Suburban: 1,000 to 5,000 people per square mile, typical of single-family housing with shops nearby.
• Small town or exurban: 200 to 1,000 people per square mile, where homes are spread out and daily errands usually require a car.
• Rural: fewer than 200 people per square mile, with farms, forests or open land dominating.

These labels are guides, not official classifications, and the Census Bureau uses its own rules to define urban areas.

What does density tell you about daily life?

Higher density usually means shorter distances to stores and workplaces, more public transit, and higher housing prices per square foot. Lower density usually means more space, more driving, and fewer services within walking distance. Density does not measure quality of life, but it helps you set expectations about commute, noise and available amenities.

Why can density be misleading?

A city's average hides large differences between neighborhoods. A mid-sized city may have a dense downtown and sprawling suburbs inside the same boundary. Two cities with the same average density can feel very different if one is concentrated in a small core. Population figures also vary by source, which we describe in our guide to understanding city population numbers.

How can you compare cities by density?

Every city page lists the density and states how it ranks against other cities in the same state. You can also compare places by browsing the state hubs, which highlight the densest and the least dense communities. For a broader look at moving decisions, read the guide to comparing cities.

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