Infill is Standard Operating Procedure

The U.S. Bureau of the Census is producing new data that shows how infill development is affecting urban areas. Wendell Cox says that the new data shows that infill has been happening since 1960 with or without mandates.

1 minute read

June 16, 2009, 1:00 PM PDT

By Liyuan Huang


"[I]nfill has been going on for years, along with suburbanization, both in the United States and in other first world nations. This is indicated by the general densification trend that occurred in US urban areas between 1990 and 2000 and the longer term densification trends that occurred in a number of southwestern urban areas, such as Los Angeles, San Jose, Riverside-San Bernardino, Phoenix, Dallas-Fort Worth and Las Vegas. All these traditionally 'sprawling' areas have, in fact, been densifying since 1960 or before. Since 2000, 33 of the nation's 37 urban areas with a population exceeding 1,000,000 population experienced population infill to their 2000 urban footprints."

Monday, June 15, 2009 in New Geography

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Aerial view of town of Wailuku in Maui, Hawaii with mountains in background against cloudy sunset sky.

Maui's Vacation Rental Debate Turns Ugly

Verbal attacks, misinformation campaigns and fistfights plague a high-stakes debate to convert thousands of vacation rentals into long-term housing.

July 1, 2025 - Honolulu Civil Beat

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

July 9, 2025 - Diana Ionescu

Map of Haussmann's redesign of Paris in the 1850s through 1870s under Napoleon III.

In Urban Planning, AI Prompting Could be the New Design Thinking

Creativity has long been key to great urban design. What if we see AI as our new creative partner?

June 30, 2025 - Tom Sanchez

View of dense apartment buildings on Seattle waterfront with high-rise buildings in background.

King County Supportive Housing Program Offers Hope for Unhoused Residents

The county is taking a ‘Housing First’ approach that prioritizes getting people into housing, then offering wraparound supportive services.

July 11 - Real Change

Aerial view of suburban housing near Las Vegas, Nevada.

Researchers Use AI to Get Clearer Picture of US Housing

Analysts are using artificial intelligence to supercharge their research by allowing them to comb through data faster. Though these AI tools can be error prone, they save time and housing researchers are optimistic about the future.

July 11 - Shelterforce Magazine

Green bike share bikes parked in a row on a commercial street with outdoor dining and greenery.

Making Shared Micromobility More Inclusive

Cities and shared mobility system operators can do more to include people with disabilities in planning and operations, per a new report.

July 11 - Cities Today