How Well Do You Know Your City's Boundaries?

A new crowdsourced map projects asks people to draw their city limits from memory.

1 minute read

September 9, 2016, 8:00 AM PDT

By James Brasuell @CasualBrasuell


Los Angeles

Google Maps / The city of Los Angeles

Tanvi Misra shares news of the new mapping project by Alasdair Rae, an urban scholar at the University of Sheffield, U.K., who is crowdsourcing maps of the mental boundaries of cities.

Rae's own words describe this project:

Sometimes official city boundaries extend far beyond the urban fabric, and sometimes they don't include very much of it at all. I want to see what people consider to be part of their city, or not. All the drawn boundaries on this site come from your contributions.

Yes, you can draw your own map, and, yes, you can view previous mapping attempts. 

Misra notes two takeaways. First, "[f]or many, the paths they take to move around the city become its de-facto borders. M25, the highway that circles London’s core, for example, is a popular option."

Second, the "map confirms what we’ve known for a while—that how our mind recalls the space around us depends heavily on the landmarks and routes that we know and take."

Wednesday, September 7, 2016 in CityLab

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

Get top-rated, practical training

Red 1972 Ford Pinto with black racing stripes on display with man sitting in driver's seat.

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto

The Tesla Cybertruck was recalled seven times last year.

July 2, 2025 - Mother Jones

Close-up of park ranger in green jacket and khaki hat looking out at Bryce Canyon National Park red rock formations.

National Parks Layoffs Will Cause Communities to Lose Billions

Thousands of essential park workers were laid off this week, just before the busy spring break season.

February 18, 2025 - National Parks Traveler

Paved walking path next to canal in The Woodlands, Texas with office buildings in background.

Retro-silient?: America’s First “Eco-burb,” The Woodlands Turns 50

A master-planned community north of Houston offers lessons on green infrastructure and resilient design, but falls short of its founder’s lofty affordability and walkability goals.

February 19, 2025 - Greg Flisram

Screenshot of shade map of Buffalo, New York with legend.

Test News Post 1

This is a summary

0 seconds ago - 2TheAdvocate.com

Red 1972 Ford Pinto with black racing stripes on display with man sitting in driver's seat.

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto

The Tesla Cybertruck was recalled seven times last year.

18 minutes ago - Mother Jones

test alt text

Test News Headline 46

Test for the image on the front page.

March 5 - Cleantech blog