Jacksonville Is America's Biggest City (Outside Alaska)

When people think of America's biggest cities, they usually think of population. New York, Los Angeles, Chicago. But by area, the champ is Jacksonville, Florida—at least if you're not counting Alaska.

Jacksonville sprawls across an impressive 875 square miles, making it the largest city by total area in the contiguous United States. To put that in perspective, you could fit the entire city of San Francisco into Jacksonville more than 18 times. Los Angeles? Jacksonville is nearly twice as large.

The 1968 Consolidation That Changed Everything

Jacksonville wasn't always this massive. In 1968, the city underwent a dramatic transformation through municipal consolidation, merging with most of Duval County. Overnight, Jacksonville's boundaries expanded from a modest urban core to encompass nearly the entire county.

This wasn't just about bragging rights. The consolidation addressed serious governance issues, streamlined services, and created one unified local government for what had been a fragmented region.

But What About Alaska?

Here's where Jacksonville's title gets an asterisk. Four Alaska cities are significantly larger:

• Sitka: 2,870 square miles
• Juneau: 3,255 square miles
• Wrangell: 2,542 square miles
• Anchorage: 1,944 square miles

Sitka alone is more than three times Jacksonville's size. These massive municipalities exist because Alaska uses a different system—consolidated city-boroughs that include vast stretches of wilderness, islands, and undeveloped land.

So Jacksonville holds the crown for the lower 48 states, but Alaska's cities operate on an entirely different scale. It's the difference between sprawling Florida suburbs and incorporating entire mountain ranges into city limits.

A City of Neighborhoods

Jacksonville's massive footprint means it's really a collection of distinct communities. From the beaches along the Atlantic coast to the urban core downtown, from suburban sprawl to rural areas that still fall within city limits, Jacksonville contains multitudes.

This geographic diversity is both a strength and a challenge. Residents enjoy easy access to beaches, rivers, and natural areas, but the city's low density can make public transportation difficult and create long commutes.

Still, there's something uniquely American about a city so large you need a car just to get from one neighborhood to another—a city that's technically urban but feels suburban, coastal but also inland, densely packed in some areas and wide open in others.