May 26, 2022

Online Reference Resources: “How Old are the Buildings in Your Area? A New Interactive Map Might Tell You”

From The Architects Newspaper:

2017-03-20_14-44-00As part of its ReUrbanism initiative, the National Trust for Historic Preservation has produced interactive maps which chart the age and character of cities across the United States.

The Atlas of ReUrbanism is meant to be a new tool for urbanists and advocates, one that better utilizes massive amounts of data on the age of cities. Along with the interactive map, the report draws connections between the physical character of cities and social, economic, and environmental concerns. Used together, the report and maps help give a complex understanding of American cities.


The National Trust’s Preservation Green Lab has led the development of the maps. Information was gathered from the sources such as the U.S. Census and the American Community Survey.

Data is Available for the Following Cities (More to Come)

  • Austin
  • Baltimore
  • Chicago
  • Buffalo
  • Cleveland
  • Denver
  • Detroit
  • Houston
  • Long Beach
  • Los Angeles
  • Louisville
  • Milwaukee
  • Newark
  • New York City
  • Philadelphia
  • Portland, OR
  • San Francisco
  • Seattle
  • Tucson
  • Tulsa
  • Washington, D.C.

Read the Complete Article

Direct to Atlas of ReUrbanism Website

Direct to Atlas of ReUrbanism Map

Access Webinar: “Using the Atlas of ReUrbanism to Understand Your City”
Runs one hour. 

Direct to Atlas of ReUrbanism Fact Sheets For Each City

Direct to Atlas of ReUrbanism: Summary Report
24 pages; PDF. 

See Also: Updated and Expanded “Atlas of Urban Expansion” is Now Available Online (January 13, 2017)

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.