Map of the Month

Each month a new map is presented to the Commission to help explain important trends in the Bay Area, across the nation and around the world. These custom-crafted maps are prepared by MTC’s Data & Visualization team.

January 2018
With passage of SB 1 in 2017, California has joined the ranks of 38 states both red and blue and the District of Columbia that have stepped up in the face of Congressional inaction and passed legislation to raise their own state gas taxes since Congress...
December 2017
The month's Map of the Month examines an issue of housing policy not often discussed:how big are the houses that get built? The map depicts U.S metros with both the largest and smallest units. As you can see, the San Francisco-Oakland urbanized area is...
November 2017
On Sunday October 8th, the first of four devastating wildfires ignited in Napa County near tiny Tubbs Lane just north of Calistoga fueled by parched grass and tinder-dry trees. That same evening, dry, hurricane speed winds swept through the area with...
October 2017
On Monday, October 9th, 2017 the Bay Area experienced a 4.1 earthquake about 12 miles east of San Jose near the Calaveras Fault. The small jolt-and-roll caused no damage but served as a not-so-gentle reminder that the Bay Area rests upon a number of...
September 2017
Since the turn of the century, the U.S. has undergone a redistribution of population from rural and rust belt counties to urban counties; particularly those along the Northern and Southern Atlantic Seaboard, the Pacific Coast and parts of the Southwest...
July 2017
This month’s map is based on a recently published New York Times article, which found that on average, only 33% of Americans discuss global warming at least occasionally with friends and family and up to 31% never do. As shown in the map, there are...
June 2017
On May 1, the California Department of Finance (DOF) released population estimates updated through the end of year 2016, which include detailed data on housing production for the San Francisco Bay Area. While a single year is just one data point and may...
May 2017
This month's Map of the Month highlights employment centers within the 21 - County Northern California Mega Region. Employment Centers were defined within built-up areas where there was an employment density of over 5,000 jobs per square mile. Jobs...
April 2017
A recent New York Times article examines one of the biggest drivers in a families' decision to leave cities: school. Using data from a number of sources, the New York Times developed charts that look at school performance and median home sale price per...
March 2017
In December 2016, Waze and MTC entered into a data sharing agreement that provides the Freeway Service Patrol (FSP) program with real-time information that will help FSP tow drivers quickly detect incidents. Waze, in turn, will receive the FSP’s highway...
February 2017
This month's map highlights a recent study released by Inrix Inc. that examines traffic congestion in over 1,000 cities - 240 in the U.S. - across 38 countries. The study reveals that the U.S. is ranked as the most congested developed country in the...
January 2017
This map shows median home values plotted against median household income in an effort to illustrate where the least affordable housing in the U.S. is located. The Bay Area, not surprisingly, has some of the least affordable housing in the country – both...