Mapping Informal Neighborhoods

New mapping tools are helping cities around the world map and understand their poorest communities.

2 minute read

August 5, 2021, 8:00 AM PDT

By Diana Ionescu @aworkoffiction


Homeless

Checubus / Shutterstock

"The geography of slum living has long been poorly defined," writes Laura Bliss, but an international NGO hopes to change that by facilitating the mapping of informal neighborhoods in cities around the world. According to Tony Frangie, "It’s no secret that census officials don’t really go deep into these areas, so nobody really knows the real population of the entire city." And "[w]ith no street names or buildings on platforms such as Google Maps, information gaps keep much of the slum landscape hidden to outsiders. For residents, it makes it harder to access the benefits and services of urban development, such as roads, water hookups, sanitation and the internet. "

The ability to create maps of formerly ignored areas can have immediate impacts on people's access to services. Map Kibera, a project in Kenya, "has shown by providing geographic information to NGOs and activists that have successfully improved water connections and the number of schools in slums outside Nairobi."

"In Caracas, a group of researchers and students recorded the streets and businesses of the San Miguel de la Vega slum using notebooks and smartphones, then uploaded the information to OpenStreetMap, the open-source mapping platform" to create a map of the neighborhood. "Humanitarian OpenStreetMap Team (HOT), an international NGO dedicated to open-source mapping for development and humanitarian purposes, has helped dozens of similar projects around the world."

Wednesday, July 28, 2021 in Bloomberg 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

Close-up of "Apartment for rent" sign in red text on black background in front of blurred building

Trump Administration Could Effectively End Housing Voucher Program

Federal officials are eyeing major cuts to the Section 8 program that helps millions of low-income households pay rent.

April 21, 2025 - Housing Wire

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.

April 30, 2025 - Diana Ionescu

Close-up on Canadian flag with Canada Parliament building blurred in background.

Canada vs. Kamala: Whose Liberal Housing Platform Comes Out on Top?

As Canada votes for a new Prime Minister, what can America learn from the leading liberal candidate of its neighbor to the north?

April 28, 2025 - Benjamin Schneider

Washington

Washington State’s Parking Reform Law Could Unlock ‘Countless’ Acres for New Housing

A law that limits how much parking cities can require for residential amd commercial developments could lead to a construction boom.

5 hours ago - Streetsblog USA

Bluebird sitting on branch of green bush.

Wildlife Rebounds After the Eaton Fire

Following the devastation of the Eaton Fire, the return of wildlife and the regrowth of native plants are offering powerful signs of resilience and renewal.

6 hours ago - AP News

1984 Olympics

LA to Replace Inglewood Light Rail Project With Bus Shuttles

LA Metro says the change is in response to community engagement and that the new design will be ready before the 2028 Olympic Games.

7 hours ago - Newsweek

Urban Design for Planners 1: Software Tools

This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.

Planning for Universal Design

Learn the tools for implementing Universal Design in planning regulations.